Exterios E Single Split System Wall Mounted Heat Pump | Panasonic North America - Canada
Order No: PAPAMY1501049CE
AU TO HEAT COOL
DRY FAN
FAN SPEED
AIR SWING
OFF/ON
AUTO
ECONAVI
COMFORT
MODE
T E M P AIR SWING
POWERFUL/ QUIET FAN SPEED
TIM ER ON
1
2
SET 3
O FF
CANCEL AC RC
SET CHECK CLOCK RESET
AU TO HEAT COOL
DRY FAN
FAN S PEED
AIR SWING
OFF/ON
AUTO
ECONAVI
COMFORT
MODE
TEM P
POWERFUL/ QUIET FAN
SPEED
AIR
SWING
TIM ER ON
1
2
SET 3
O FF
CANCEL AC RC
SET CHECK CLOCK RESET
Indoor Unit CS-E9RKUAW CS-E12RKUAW CS-E18RKUAW CS-E24RKUAW
Outdoor Unit CU-E9RKUA CU-E12RKUA CU-E18RKUA CU-E24RKUA
Destination USA
Canada
Please file and use this manual together with the service manual for Model No. CU-2E18NBU and CU-5E36QBU, Order No. PHAAM1111120A1 and PAPAMY1312037CE.
WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the products dealt with in this service information by anyone else could result in serious injury or death.
PRECAUTION OF LOW TEMPERATURE In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit.
© Panasonic Corporation 2015.
TABLE OF CONTENTS
1. Safety Precautions .............................................3
2. Specification .......................................................5
3. Features.............................................................11
4. Location of Controls and Components..........12
4.1 Indoor Unit ..................................................12 4.2 Outdoor Unit ...............................................12 4.3 Remote Control ..........................................12
5. Dimensions .......................................................13
5.1 Indoor Unit ..................................................13 5.2 Outdoor Unit ...............................................15
6. Refrigeration Cycle Diagram ...........................16
6.1 CU-E9RKUA CU-E12RKUA......................16 6.2 CU-E18RKUA CU-E24RKUA....................17
7. Block Diagram ..................................................18
7.1 CS-E9RKUAW CU-E9RKUA CS-E12RKUAW CU-E12RKUA.................18
7.2 CS-E18RKUAW CU-E18RKUA CS-E24RKUAW CU-E24RKUA.................19
8. Wiring Connection Diagram ............................20
8.1 Indoor Unit ..................................................20 8.2 Outdoor Unit ...............................................22
9. Electronic Circuit Diagram ..............................24
9.1 Indoor Unit ..................................................24 9.2 Outdoor Unit ...............................................26
10. Printed Circuit Board .......................................28
10.1 Indoor Unit ..................................................28 10.2 Outdoor Unit ...............................................30
11. Installation Instruction (E9RK and E12RK)....33
11.1 Select the Best Location.............................33 11.2 Indoor Unit ..................................................34 11.3 Outdoor Unit ...............................................38
12. Installation Instruction (E18RK and E24RK) .........................................41
12.1 Select the Best Location.............................41 12.2 Indoor Unit ..................................................42 12.3 Outdoor Unit ...............................................46
13. Operation Control.............................................49
13.1 Basic Function ............................................49 13.2 Indoor Fan Speed Control ..........................50 13.3 Indoor Fan Motor Operation .......................51 13.4 Outdoor Fan Motor Operation ....................51 13.5 Airflow Direction..........................................52 13.6 Quiet Operation (Cooling Mode/Cooling
Area of Dry Mode) ......................................53 13.7 Quiet Operation (Heating) ..........................54 13.8 Powerful Mode Operation...........................54 13.9 Timer Control..............................................54 13.10 Auto Restart Control ...................................55 13.11 Indication Panel ..........................................55
13.12 ECONAVI and AUTO COMFORT Operation ....................................................55
14. Operation Control (For Multi Split Connection) ............................59
14.1 Cooling operation .......................................59 14.2 Soft Dry Operation......................................59 14.3 Heating Operation ......................................59 14.4 Automatic Operation
(For Multi Split Connection Only) ...............60 14.5 Indoor Fan Motor Operation .......................60 14.6 Powerful Mode Operation...........................60 14.7 Auto restart control .....................................60 14.8 Indication Panel ..........................................60
15. Protection Control (E9RK and E12RK)...........61
15.1 Protection Control For All Operations.........61 15.2 Protection Control For Cooling & Soft Dry
Operation ....................................................63
16. Protection Control (E18RK and E24RK).........66
16.1 Protection Control For All Operations.........66 16.2 Protection Control For Cooling & Soft Dry
Operation ....................................................67
17. Servicing Mode .................................................70
17.1 Auto Off/On Button .....................................70 17.2 Cooling Only Operation
(Single connection Only, Multi connection please refer to Multi outdoor manual).........71 17.3 Remote Control Button ...............................72
18. Troubleshooting Guide ....................................73
18.1 Refrigeration Cycle System ........................73 18.2 Breakdown Self Diagnosis Function...........75 18.3 Error Code Table ........................................76 18.4 Self-diagnosis Method ................................78
19. Disassembly and Assembly Instructions ... 107
19.1 CS-E9RKUAW CS-E12RKUAW ............ 107 19.2 CS-E18RKUAW CS-E24RKUAW .......... 111 19.3 Outdoor Electronic Controller Removal
Procedure ................................................ 114
20. Technical Data ............................................... 116
20.1 Cool Mode Performance Data ................. 116 20.2 Heat Mode Performance Data................. 120
21. Service Data ................................................... 122
21.1 Cool Mode Outdoor Air Temperature Characteristic........................................... 122
21.2 Heat Mode Outdoor Air Temperature Characteristic........................................... 126
21.3 Piping Length Correction Factor.............. 130
22. Exploded View and Replacement Parts List .................................................................. 132
22.1 Indoor Unit ............................................... 132 22.2 Outdoor Unit ............................................ 138
2
1. Safety Precautions
Read the following "SAFETY PRECAUTIONS" carefully before perform any servicing. Electrical work must be installed or serviced by a licensed electrician. Be sure to use the correct rating of the
power plug and main circuit for the model installed. The caution items stated here must be followed because these important contents are related to safety. The
meaning of each indication used is as below. Incorrect installation or servicing due to ignoring of the instruction will cause harm or damage, and the seriousness is classified by the following indications.
WARNING CAUTION
This indication shows the possibility of causing death or serious injury This indication shows the possibility of causing injury or damage to properties.
The items to be followed are classified by the symbols:
This symbol denotes item that is PROHIBITED from doing.
Carry out test run to confirm that no abnormality occurs after the servicing. Then, explain to user the operation, care and maintenance as stated in instructions. Please remind the customer to keep the operating instructions for future reference.
WARNING
1. Do not modify the machine, part, material during repairing service.
2. If wiring unit is supplied as repairing part, do not repair or connect the wire even only partial wire break. Exchange the whole wiring unit.
3. Do not wrench the fasten terminal. Pull it out or insert it straightly.
4. Engage authorized dealer or specialist for installation and servicing. If installation of servicing done by the user is defective, it will cause water leakage, electrical shock or fire.
5. Install according to this installation instructions strictly. If installation is defective, it will cause water leakage, electric shock or fire.
6. Use the attached accessories parts and specified parts for installation and servicing. Otherwise, it will cause the set to fall, water leakage, fire or electrical shock.
7. Install at a strong and firm location which is able to withstand the set's weight. If the strength is not enough or installation is not properly done, the set will drop and cause injury.
8. For electrical work, follow the local national wiring standard, regulation and the installation instruction. An independent circuit and single outlet must be used. If electrical circuit capacity is not enough or defect found in electrical work, it will cause electrical shock or fire.
9. This equipment is strongly recommended to be installed with Earth Leakage Circuit Breaker (ELCB) or Residual Current Device (RCD). Otherwise, it may cause electrical shock and fire in case equipment breakdown or insulation breakdown.
10. Do not use joint cable for indoor/outdoor connection cable. Use the specified indoor/outdoor connection cable, refer to installation instruction CONNECT THE CABLE TO THE INDOOR UNIT and connect tightly for indoor/outdoor connection. Clamp the cable so that no external force will be acted on the terminal. If connecting or fixing is not perfect, it will cause heat up or fire at the connection.
11. Wire routing must be properly arranged so that control board cover is fixed properly. If control board cover is not fixed perfectly, it will cause heat-up or fire at the connection point of terminal, fire or electrical shock.
12. When install or relocate air conditioner, do not let any substance other than the specified refrigerant, eg. air etc. mix into refrigeration cycle (piping). (Mixing of air etc. will cause abnormal high pressure in refrigeration cycle and result in explosion, injury etc.).
13. Do not install outdoor unit near handrail of veranda. When installing air-conditioner unit at veranda of high rise building, child may climb up to outdoor unit and cross over the handrail and causing accident.
14. This equipment must be properly earthed. Earth line must not be connected to gas pipe, water pipe, earth of lightning rod and telephone. Otherwise, it may cause electrical shock in case equipment breakdown or insulation breakdown.
15. Keep away from small children, the thin film may cling to nose and mouth and prevent breathing.
16. Do not use unspecified cord, modified cord, joint cord or extension cord for power supply cord. Do not share the single outlet with other electrical appliances. Poor contact, poor insulation or over current will cause electrical shock or fire.
17. Tighten the flare nut with torque wrench according to specified method. If the flare nut is over-tightened, after a long period, the flare may break and cause refrigerant gas leakage.
18. For R410A model, use piping, flare nut and tools which is specified for R410A refrigerant. Using of existing (R22) piping, flare nut and tools may cause abnormally high pressure in the refrigerant cycle (piping), and possibly result in explosion and injury. Thickness or copper pipes used with R410A must be more than 1/32" (0.8 mm). Never use copper pipes thinner than 1/32" (0.8 mm). It is desirable that the amount of residual oil is less than 0.0008 oz/ft (40 mg/10 m).
3
WARNING 19. During installation, install the refrigerant piping properly before run the compressor. (Operation of compressor without fixing refrigeration piping
and valves at opened condition will cause suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion, injury etc.). 20. During pump down operation, stop the compressor before remove the refrigeration piping. (Removal of refrigeration piping while compressor is
operating and valves are opened condition will cause suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion, injury etc.). 21. After completion of installation or service, confirm there is no leakage of refrigerant gas. It may generate toxic gas when the refrigerant contacts with fire. 22. Ventilate if there is refrigerant gas leakage during operation. It may cause toxic gas when the refrigerant contacts with fire.
23. Do not insert your fingers or other objects into the unit, high speed rotating fan may cause injury.
24. Must not use other parts except original parts describe in catalog and manual.
25. Using of refrigerant other than the specified type may cause product damage, burst and injury etc.
CAUTION 1. Do not install the unit at place where leakage of flammable gas may occur. In case gas leaks and accumulates at surrounding of the
unit, it may cause fire. 2. Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the room and damage
the furniture. 3. Tighten the flare nut with torque wrench according to specified method. If the flare nut is over-tightened, after a long period, the flare
may break and cause refrigerant gas leakage. 4. Do not touch outdoor unit air inlet and aluminium fin. It may cause injury.
5. Select an installation location which is easy for maintenance. 6. Pb free solder has a higher melting point than standard solder; typically the melting point is 50°F 70°F (30°C 40°C) higher. Please use
a high temperature solder iron. In case of the soldering iron with temperature control, please set it to 700 ± 20°F (370 ± 10°C). Pb free solder will tend to splash when heated too high (about 1100°F / 600°C). 7. Power supply connection to the room air conditioner. Power supply cord shall be UL listed or CSA approved 3 conductor with minimum AWG14 (For E9RK and E12RK) and AWG12 (For E18RK and E24RK) wires. Power supply point should be in an easily accessible place for power disconnection in case of emergency. In some countries, permanent connection of this air conditioner to the power supply is prohibited. Fix power supply connection to a circuit breaker for permanent connection. Use NRTL approved fuse or circuit breaker (rating refers to name plate) for permanent connection. 8. Do not release refrigerant during piping work for installation, servicing, reinstallation and during repairing a refrigerant parts. Take care of the liquid refrigerant, it may cause frostbite.
9. Installation or servicing work: It may need two people to carry out the installation or servicing work. 10. Do not install this appliance in a laundry room or other location where water may drip from the ceiling, etc.
11. Do not sit or step on the unit, you may fall down accidentally.
12. Do not touch the sharp aluminium fins or edges of metal parts. If you are required to handle sharp parts during installation or servicing, please wear hand glove. Sharp parts may cause injury.
4
2. Specification
Cooling
Heating
Model
Indoor Outdoor
CS-E9RKUAW CU-E9RKUA
CS-E12RKUAW CU-E12RKUA
Performance Test Condition
ARI
ARI
Power Supply
Phase, Hz V
Single, 60
208
230
Single, 60
208
230
Min. Mid. Max. Min. Mid. Max. Min. Mid. Max. Min. Mid. Max.
Capacity
kW BTU/h
1.20 2.64 3.00 1.20 2.64 3.00 1.20 3.36 3.90 1.20 3.36 3.90 4100 9000 10200 4100 9000 10200 4100 11500 13300 4100 11500 13300
Running Current
A
-
3.6
-
-
3.2
-
-
4.7
-
-
4.2
-
Input Power
W
250 690 850 250 690 850 250 920 1.15k 250 920 1.15k
EER
W/W Btu/hW
4.80 3.83 3.53 4.80 3.83 3.53 4.80 3.65 3.39 4.80 3.65 3.39 16.40 13.00 12.00 16.40 13.00 12.00 16.40 12.50 11.55 16.40 12.50 11.55
Power Factor
%
-
92
-
-
94
-
-
94
-
-
95
-
dB-A Indoor Noise (H / L / QLo)
Power Level dB
40 / 25 / 20 56 / - / -
40 / 25 / 20 56 / - / -
43 / 28 / 20 59 / - / -
43 / 28 / 20 59 / - / -
dB-A Outdoor Noise (H / L / QLo)
Power Level dB
47 / - / 62 / - / -
47 / - / 62 / - / -
48 / - / 63 / - / -
48 / - / 63 / - / -
Capacity
kW BTU/h
1.20 3.52 4.14 1.20 3.52 4.14 1.20 4.05 4.77 1.20 4.05 4.77 4100 12000 14100 4100 12000 14100 4100 13800 16300 4100 13800 16300
Running Current
A
-
5.7
-
-
5.1
-
-
6.3
-
-
5.6
-
Input Power
W
200 1.12k 1.50k 200 1.12k 1.50k 200 1.25k 1.71k 200 1.25k 1.71k
COP
W/W Btu/hW
6.00 3.14 2.76 6.00 3.14 2.76 6.00 3.24 2.79 6.00 3.24 2.79 20.50 10.70 9.40 20.50 10.70 9.40 20.50 11.00 9.50 20.50 11.00 9.50
Power Factor
%
-
94
-
-
95
-
-
95
-
-
97
-
dB-A Indoor Noise (H / L / QLo)
Power Level dB
42 / 29 / 26 58 / - / -
42 / 29 / 26 58 / - / -
44 / 35 / 32 60 / - / -
44 / 35 / 32 60 / - / -
dB-A Outdoor Noise (H / L / QLo)
Power Level dB
48 / - / 63 / - / -
48 / - / 63 / - / -
49 / - / 64 / - / -
49 / - / 64 / - / -
Max Current (A) / Max Input Power (W)
7.0 / 1.57k
7.8 / 1.71k
Starting Current (A)
5.7
6.3
Min Circuit Ampacity
15.0
15.0
Max. Current Protection
15.0
15.0
SEER / HSPF
23.00 / 11.00
22.50 / 11.00
Type
Hermetic Motor / Rotary
Hermetic Motor / Rotary
Compressor Motor Type
Brushless (4 poles)
Brushless (4 poles)
Output Power
W
700
700
Type
Cross-flow fan
Cross-flow fan
Material
ASG20K1
ASG20K1
Motor Type
DC (8 poles)
DC (8 poles)
Input Power
W
47.0 - 47.0
47.0 - 47.0
Output Power
W
QLo
rpm
Lo
rpm
Speed
Me
rpm
Hi
rpm
SHi
rpm
40
Cooling : 610 Heating : 730 Cooling : 710 Heating : 830 Cooling : 910 Heating : 1040 Cooling : 1120 Heating : 1250 Cooling : 1210 Heating : 1340
40
Cooling : 620 Heating : 940 Cooling : 780 Heating : 1040 Cooling : 1000 Heating : 1210 Cooling : 1230 Heating : 1380 Cooling : 1350 Heating : 1450
Indoor Fan
5
Outdoor Fan
Model
Type
Material
Motor Type
Input Power
Output Power
Speed
Hi
Moisture Removal
Indoor Outdoor
W W rpm L/h (Pt/h)
QLo
m3/min (ft3/min)
Lo
m3/min (ft3/min)
Indoor Airflow
Me
m3/min (ft3/min)
Hi
m3/min (ft3/min)
SHi
m3/min (ft3/min)
Outdoor Airflow
Refrigeration Cycle
Hi Control Device Refrigerant Oil Refrigerant Type
m3/min (ft3/min)
cm3 g (oz)
Height(I/D / O/D) mm (inch)
Dimension Width (I/D / O/D) mm (inch)
Depth (I/D / O/D) mm (inch)
Weight
Net (I/D / O/D)
kg (lb)
Pipe Diameter (Liquid / Gas) mm (inch)
Standard length
m (ft)
Piping
Length range (min max)
m (ft)
I/D & O/D Height different
m (ft)
Additional Gas Amount
g/m (oz/ft)
Length for Additional Gas
m (ft)
Drain Hose
Inner Diameter Length
mm (inch) mm (inch)
Fin Material
Indoor Heat
Fin Type
Exchanger Row x Stage x FPI
Size (W x H x L)
inch
Fin Material
Outdoor
Fin Type
Heat Exchanger
Row x Stage x FPI
Size (W x H x L)
inch
Air Filter
Material Type
Power Supply
Power Supply Cord
A
Thermostat
Protection Device
CS-E9RKUAW
CU-E9RKUA
Propeller
PP
DC (8 poles)
-
40
C: 830 H: 780
0.6 (1.3)
Cooling : 6.28 (222) Heating : 7.08 (250) Cooling : 7.40 (261) Heating : 8.20 (290) Cooling : 9.64 (340) Heating : 10.55 (373) Cooling : 12.0 (425) Heating : 12.9 (455) Cooling : 13.00 (459) Heating : 13.91 (491) Cooling : 31.0 (1095) Heating : 31.0 (1095)
Expansion Valve
FV50S (320)
R410A, 980 (34.6)
290 (11-7/16) / 540 (21-9/32)
870 (34-9/32) / 780 (30-23/32)
214 (8-7/16) / 289 (11-13/32)
9 (20)
37 (82)
6.35 (1/4) / 9.52 (3/8)
7.5 (24.6)
3 (9.8) ~ 20 (65.6)
15 (49.2)
20 (0.2)
7.5 (24.6)
16.7 (5/8)
650 (25-5/8)
Aluminium (Pre Coat)
Slit Fin
2 x 15 x 21
1 x 12-13/32 x 24
Aluminium (Blue coated)
Corrugate Fin
2 x 24 x 17
1-13/32 x 19-13/16 x 28-1/16 26-7/8
Polypropelene
One-touch
Outdoor
-
-
-
CS-E12RKUAW
CU-E12RKUA
Propeller
PP
DC (8 poles)
-
40
C: 830 H: 820
0.8 (1.7)
Cooling : 5.97 (211) Heating : 9.37 (331) Cooling : 7.76 (274) Heating : 10.49 (370) Cooling : 10.22 (361) Heating : 12.40 (438) Cooling : 12.8 (450) Heating : 14.3 (505) Cooling : 14.14 (499) Heating : 15.08 (532) Cooling : 31.2 (1100) Heating : 31.2 (1100)
Expansion Valve
FV50S (320)
R410A, 1.08k (38.1)
290 (11-7/16) / 540 (21-9/32)
870 (34-9/32) / 780 (30-23/32)
214 (8-7/16) / 289 (11-13/32)
9 (20)
37 (82)
6.35 (1/4) / 12.70 (1/2)
7.5 (24.6)
3 (9.8) ~ 20 (65.6)
15 (49.2)
20 (0.2)
7.5 (24.6)
16.7 (5/8)
650 (25-5/8)
Aluminium (Pre Coat)
Slit Fin
2 x 15 x 21
1 x 12-13/32 x 24
Aluminium (Blue coated)
Corrugate Fin
2 x 24 x 17
1-13/32 x 19-13/16 x 32-7/16 31-1/4
Polypropelene
One-touch
Outdoor
-
-
-
6
Model
Indoor Outdoor
CS-E9RKUAW CU-E9RKUA
CS-E12RKUAW CU-E12RKUA
DRY BULB
WET BULB
DRY BULB
WET BULB
Indoor Operation Range (Cooling) (°F / °C)
Maximum Minimum
89.6 / 32 60.8 / 16
73.4 / 23 51.8 / 11
89.6 / 32 60.8 / 16
73.4 / 23 51.8 / 11
Outdoor Operation Range (Cooling) (°F / °C)
Maximum Minimum
114.8 / 46 0 / -17.8
78.8 / 26 - / -
114.8 / 46 0 / -17.8
78.8 / 26 - / -
Indoor Operation Range
Maximum
86.0 / 30
- / -
86.0 / 30
- / -
(Heating) (°F / °C)
Minimum
60.8 / 16
- / -
60.8 / 16
- / -
Outdoor Operation Range (Heating) (°F / °C)
Maximum Minimum
75.2 / 24 -4 / -20
64.4 / 18 -5.8 / -21
75.2 / 24 -4 / -20
64.4 / 18 -5.8 / -21
1. Cooling capacities are based on indoor temperature of 27°C DRY BULB (80.6°F DRY BULB), 19.0°C WET BULB (66°F WET BULB) and outdoor air temperature of 35°C DRY BULB (95°F DRY BULB), 24°C WET BULB (75.2°F WET BULB)
2. Heating capacities are based on indoor temperature of 20°C Dry Bulb (68°F Dry Bulb) and outdoor air temperature of 7°C Dry Bulb (44.6°F Dry Bulb), 6°C Wet Bulb (42.8°F Wet Bulb)
3. Specifications are subjected to change without prior notice for further improvement.
7
Cooling
Heating
Model
Indoor Outdoor
CS-E18RKUAW CU-E18RKUA
CS-E24RKUAW CU-E24RKUA
Performance Test Condition
ARI
ARI
Power Supply
Phase, Hz V
Single, 60
208
230
Single, 60
208
230
Min. Mid. Max. Min. Mid. Max. Min. Mid. Max. Min. Mid. Max.
Capacity
kW BTU/h
1.70 5.04 5.80 1.70 5.04 5.80 1.70 7.02 8.00 1.70 7.02 8.00 5800 17200 19800 5800 17200 19800 5800 24000 27200 5800 24000 27200
Running Current
A
- 7.00 -
- 6.30 -
- 11.90 -
- 10.80 -
Input Power
W
430 1.30k 1.60k 430 1.30k 1.60k 430 2.35k 2.72k 430 2.35k 2.72k
EER
W/W Btu/hW
3.95 3.88 3.63 3.95 3.88 3.63 3.95 2.99 2.94 3.95 2.99 2.94 13.45 13.20 12.35 13.45 13.20 12.35 13.45 10.20 10.00 13.45 10.20 10.00
Power Factor
%
-
89
-
-
90
-
-
95
-
-
95
-
dB-A Indoor Noise (H / L / QLo)
Power Level dB
47 / 39 / 36 63 / - / -
47 / 39 / 36 63 / - / -
48 / 40 / 37 64 / - / -
48 / 40 / 37 64 / - / -
dB-A Outdoor Noise (H / L / QLo)
Power Level dB
49 / - / 63 / - / -
49 / - / 63 / - / -
51 / - / 65 / - / -
51 / - / 65 / - / -
Capacity
kW BTU/h
1.70 6.33 6.43 1.70 6.33 6.43 1.70 8.46 8.56 1.70 8.46 8.56 5800 21600 22000 5800 21600 22000 5800 28800 29200 5800 28800 29200
Running Current
A
- 9.30 -
- 8.30 -
- 12.60 -
- 11.40 -
Input Power
W
380 1.75k 1.80k 380 1.75k 1.80k 380 2.50k 2.66k 380 2.50k 2.66k
COP
W/W Btu/hW
4.47 3.62 3.57 4.47 3.62 3.57 4.47 3.38 3.22 4.47 3.38 3.22 15.25 12.30 12.20 15.25 12.30 12.20 15.25 11.50 10.95 15.25 11.50 10.95
Power Factor
%
-
90
-
-
92
-
-
95
-
-
95
-
dB-A Indoor Noise (H / L / QLo)
Power Level dB
46 / 39 / 36 62 / - / -
46 / 39 / 36 62 / - / -
48 / 40 / 37 64 / - / -
48 / 40 / 37 64 / - / -
dB-A Outdoor Noise (H / L / QLo)
Power Level dB
51 / - / 65 / - / -
51 / - / 65 / - / -
53 / - / 67 / - / -
53 / - / 67 / - / -
Max Current (A) / Max Input Power (W)
12.7 / 2.69k
13.7 / 3.06k
Starting Current (A)
9.3
12.6
Min Circuit Ampacity
15.0
20.0
Max. Overcurrent Protection
20.0
25.0
SEER / HSPF
19.50 / 10.00
19.00 / 10.00
Type
Hermetic Motor / Rotary
Hermetic Motor / Rotary
Compressor Motor Type
Brushless (4 poles)
Brushless (4 poles)
Output Power
W
1.7k
1.7k
Type
Cross-flow fan
Cross-flow fan
Material
ASG30K1
ASG30K1
Motor Type
DC (8 poles)
DC (8 poles)
Input Power
W
94.8 - 94.8
94.8 - 94.8
Output Power
W
QLo
rpm
Lo
rpm
Speed
Me
rpm
Hi
rpm
SHi
rpm
40
Cooling : 970 Heating : 1030 Cooling : 1060 Heating : 1120 Cooling : 1220 Heating : 1260 Cooling : 1380 Heating : 1410 Cooling : 1480 Heating : 1500
40
Cooling : 1000 Heating : 1110 Cooling : 1090 Heating : 1220 Cooling : 1240 Heating : 1360 Cooling : 1400 Heating : 1500 Cooling : 1500 Heating : 1600
Indoor Fan
8
Model
Indoor Outdoor
CS-E18RKUAW CU-E18RKUA
CS-E24RKUAW CU-E24RKUA
Type
Propeller
Propeller
Material
PP
PP
Outdoor Fan
Motor Type
DC Motor (8 poles)
DC Motor (8 poles)
Input Power
W
-
-
Output Power
Speed
Hi
Moisture Removal
QLo
Lo
Indoor Airflow
Me
Hi
SHi
Outdoor Airflow
Hi
Refrigeration Cycle
Control Device Refrigerant Oil Refrigerant Type
W rpm L/h (Pt/h) m3/min (ft3/min) m3/min (ft3/min) m3/min (ft3/min) m3/min (ft3/min) m3/min (ft3/min) m3/min (ft3/min)
cm3 g (oz)
60
Cooling: 700 Heating: 700
1.4 (3.0)
Cooling : 13.28 (469) Heating : 14.40 (508) Cooling : 14.53 (513) Heating : 15.65 (553) Cooling : 16.77 (592) Heating : 17.61 (622) Cooling : 19.00 (670) Heating : 19.70 (695) Cooling : 20.40 (720) Heating : 20.96 (740) Cooling : 54.5 (1925) Cooling : 54.5 (1925) Heating : 54.5 (1925) Heating : 54.5 (1925)
Expansion Valve
FV50S (800)
R410A, 1.60k (56.5)
60
Cooling: 730 Heating: 750
3.6 (7.6)
Cooling : 13.42 (474) Heating : 14.86 (525) Cooling : 14.67 (518) Heating : 16.39 (579) Cooling : 16.77 (592) Heating : 18.35 (648) Cooling : 19.00 (670) Heating : 20.30 (715) Cooling : 20.40 (720) Heating : 21.70 (766) Cooling : 54.9 (1940) Cooling : 54.9 (1940) Heating : 56.5 (1995) Heating : 56.5 (1995)
Expansion Valve
FV50S (800)
R410A, 1.85k (65.3)
Height(I/D / O/D) mm (inch)
290 (11-7/16) / 795 (31-5/16)
290 (11-7/16) / 795 (31-5/16)
Dimension Width (I/D / O/D) mm (inch)
1070 (42-5/32) / 875 (34-15/32)
1070 (42-5/32) / 875 (34-15/32)
Depth (I/D / O/D) mm (inch)
240 (9-15/32) / 320 (12-5/8)
240 (9-15/32) / 320 (12-5/8)
Weight
Net (I/D / O/D)
kg (lb)
12 (26)
60 (132)
12 (26)
60 (132)
Pipe Diameter (Liquid / Gas) mm (inch)
6.35 (1/4) / 12.70 (1/2)
6.35 (1/4) / 15.88 (5/8)
Standard length
m (ft)
7.5 (24.6)
7.5 (24.6)
Piping
Length range (min max)
m (ft)
3 (9.8) ~ 30.5 (100.0)
3 (9.8) ~ 30.5 (100.0)
I/D & O/D Height different
m (ft)
15 (49.2)
15 (49.2)
Additional Gas Amount
g/m (oz/ft)
25 (0.3)
25 (0.3)
Length for Additional Gas
m (ft)
10 (32.8)
10 (32.8)
Drain Hose
Inner Diameter Length
mm (inch) mm (inch)
16.7 (5/8) 650 (25-5/8)
16.7 (5/8) 650 (25-5/8)
Fin Material
Aluminium (Pre Coat)
Aluminium (Pre Coat)
Indoor Heat
Fin Type
Exchanger Row x Stage x FPI
Slit Fin 2 x 15 x 21
Slit Fin 2 x 15 x 21
Size (W x H x L)
inch
1 x 12-13/32 x 31-7/8
1 x 12-13/32 x 31-7/8
Fin Material
Aluminium (Blue coated)
Aluminium (Blue coated)
Outdoor
Fin Type
Heat Exchanger
Row x Stage x FPI
Size (W x H x L)
inch
Air Filter
Material Type
Corrugate Fin
2 x 36 x 19 1-13/32 x 29-25/32 x 34-7/32
35-5/16 Polypropelene
One-touch
Corrugate Fin
2 x 36 x 19 1-13/32 x 29-25/32 x 34-7/32
35-5/16 Polypropelene
One-touch
Power Supply
Outdoor
Outdoor
Power Supply Cord
A
-
-
Thermostat
-
-
Protection Device
-
-
9
Model
Indoor Outdoor
CS-E18RKUAW CU-E18RKUA
CS-E24RKUAW CU-E24RKUA
DRY BULB
WET BULB
DRY BULB
WET BULB
Indoor Operation Range (Cooling) (°F / °C)
Maximum Minimum
89.6 / 32 60.8 / 16
73.4 / 23 51.8 / 11
89.6 / 32 60.8 / 16
73.4 / 23 51.8 / 11
Outdoor Operation Range (Cooling) (°F / °C)
Maximum Minimum
114.8 / 46 0 / -17.8
78.8 / 26 - / -
114.8 / 46 0 / -17.8
78.8 / 26 - / -
Indoor Operation Range
Maximum
86.0 / 30
- / -
86.0 / 30
- / -
(Heating) (°F / °C)
Minimum
60.8 / 16
- / -
60.8 / 16
- / -
Outdoor Operation Range (Heating) (°F / °C)
Maximum Minimum
75.0 / 24 -4 / -20
64.4 / 18 -5.8 / -21
75.0 / 24 -4 / -20
64.4 / 18 -5.8 / -21
1. Cooling capacities are based on indoor temperature of 80°F DRY BULB, 67°F WET BULB and outdoor air temperature of 95°F DRY BULB, 75°F WET BULB.
2. Heating capacities are based on indoor temperature of 70°F DRY BULB, 60°F WET BULB and outdoor air temperature of 47°F DRY BULB, 43°F WET BULB.
3. Specifications are subjected to change without prior notice for further improvement.
10
3. Features
Inverter Technology o Wider output power range o Energy saving o Quick Cooling o More precise temperature control
Environment Protection o Non-ozone depletion substances refrigerant (R410A)
Long Installation Piping o CS/CU-E9/12RK, long piping up to 65 feet (20 meters) o CS/CU-E18/24RK, long piping up to 100 feet (30 meters)
Easy to use remote control Quality Improvement
o Random auto restart after power failure for safety restart operation o Gas leakage protection o Prevent compressor reverse cycle o Inner protector to protect Compressor o Noise prevention during soft dry operation Operation Improvement o Quiet mode to reduce the indoor unit operating sound o Powerful mode to reach the desired room temperature quickly Serviceability Improvement o Breakdown Self Diagnosis function
11
4. Location of Controls and Components
4.1 Indoor Unit
Aluminium Fin
Front Panel
Auto OFF/ON button
Air Filters
Human activity sensor
Horizontal Airflow Direction Louver · Manually adjustable
(E9RK and E12RK).
Air Purifying Filter
POWER TIMER ECONAVI AUTO COMFORT POWERFUL QUIET
Remote control receiver and Indicator
Vertical Airflow Direction Louver · Do not adjust by hand.
INDICATOR
POWER TIMER ECONAVI AUTO COMFORT POWERFUL QUIET
(Green) (Orange) (Green) (Green) (Orange) (Orange)
4.2
· Do not adjust by hand (E18RK and E24RK).
Outdoor Unit
Air inlet (rear)
Air inlet (side)
4.3 Remote Control
Air outlet
Remote control display
Econavi operation Operation mode
Temperature setting Powerful/Sleep mode
operation
Check
AUTO HEAT COOL
DRY FAN
FAN SPEED
AIR SW ING
OFF/ON AUTO
ECONAVI
COMFORT
MODE
TEMP AIR SWING
POWERFUL/ QUIET FAN SPEED
TIMER
ON
SET
1
2
3
OFF
CANCEL AC RC
SET CHECK CLOCK RESET
OFF/ON Auto comfort operation
Vertical airflow direction selection Fan speed selection
Timer setting
Clock setting
Remote control display
Econavi operation Operation mode
Temperature setting Powerful/Sleep mode
operation
Check
AUTO HEAT COOL
DRY FAN
FAN SPEED
AIR SW ING
OFF/ON AUTO
ECONAVI
COMFORT
MODE TEMP
POWERFUL/ QUIET FAN
SPEED
AIR
SWING
TIMER
ON
SET
1
2
3
OFF
CANCEL AC RC
SET CHECK CLOCK RESET
OFF/ON Auto comfort operation
Airflow direction selection Fan speed selection Timer setting
Clock setting
E9RK E12RK
E18RK E24RK
12
5. Dimensions
5.1 Indoor Unit
5.1.1 CS-E9RKUAW CS-E12RKUAW
<Top View>
<Side View>
Air intake direction
<Front View>
(8-7/16)
<Side View> 8-7/16
11-7/16 2-13/32 1-49/64
Left piping hole
Air outlet direction
1/32~1/16 <Bottom View>
4-29/32
2-11/32
<Rear View>
34-9/32
1/32~1/16
Liquid side Gas side
2-11/32
4-17/32
Right piping hole
Remote control
1-7/8
7/8
5-1/4
AUTO HEAT COOL
DRY FAN
FAN S P E ED
A IR SW IN G
O FF/O N ECONAVI
AUTO CO MFO RT
MODE
T E M P AIR SWING
POWERFUL/ QUIET FAN SPEED
TIM ER ON
1
2
SET 3
O FF
CAN CEL
AC
RC
SET CHECK CLOCK RESET
Remote control holder
2-3/8
2
16-1/8
(1-5/8~2-13/32)
Relative position between the indoor unit and the installation plate <Front View> 29-29/64
Installation plate
Indoor unit external dimensions line
17-9/32
Left piping hole
3-3/4 1-11/16
17
Right piping hole
5-1/16 9-17/32
5-1/16 9-17/32
10-3/8
5/8 Unit: inch
13
11-7/16 2-13/32 1-49/64
5.1.2
CS-E18RKUAW CS-E24RKUAW
<Top View>
(9-15/32)
<Side View>
Air intake direction
<Front View>
<Side View> 9-15/32
Left piping hole
Air outlet direction
1/32~1/16 <Bottom View>
42-5/32
4-29/32
2-11/32
<Rear View>
1/32~1/16
2-11/32
4-17/32
Right piping hole
Remote control
1-7/8
7/8
5-1/4
AUTO HEAT COOL
DRY FAN
FAN SPEED
A IR SW IN G
O FF/ON ECO NAVI
AUTO COMFORT
MODE
TEM P
POWERFUL/ QU IET FAN
SPEED
A IR
SW ING
TIM ER ON
1
2
SET 3
O FF
CA N CEL
AC
RC
SET CHECK CLOCK RESET
Remote control holder
2-3/8
2
16-9/64
(1-39/64~2-13/32)
Installation plate
Indoor unit external dimensions line
Relative position between the indoor unit and the installation plate <Front View> 29-7/16
21-7/32
Left piping hole
8-5/8 6-21/32
20-15/16
Right piping hole
5-1/16 9-17/32
5-1/16 9-17/32
10-3/8
5/8 Unit: inch
14
5.2 Outdoor Unit
5.2.1 CU-E9RKUA CU-E12RKUA
Space necessary for installation
3-7/8
3-7/8
39-3/8
<Top View>
1 (4-1/8)
Anchor Bolt Pitch 12-5/8 x 22-1/2
30-23/32 22-1/2
<Side View>
<Front View>
1-3/8
2-5/8 4-1/8 2-3/8
3-3/8 6-1/8
2-way valve at Liquid side (High Pressure)
3-way valve at Gas side (Low Pressure)
<Side View>
1/2
11-13/32
(2-3/4) (2-3/8) (3/4) 21-9/32
Unit : inch
5.2.2 CU-E18RKUA CU-E24RKUA
Space necessary for installation
3-7/8
3-7/8 39-3/8
<Top View>
1-5/64
(5-5/32)
Anchor Bolt Pitch 15-5/64 x 24-7/64
34-15/32 24-1/8
<Side View>
<Front View>
2-3/4 5-5/32
3-7/32 5-31/32 14-3/16
1-1/2
<Side View>
2-5/16
12-5/8
2-3/4 2-61/64 (31/32)
31-5/16
Unit: inch
2-17/32
15
6. Refrigeration Cycle Diagram
6.1 CU-E9RKUA CU-E12RKUA
INDOOR
INTAKE TEMP. SENSOR
PIPE TEMP. SENSOR
LIQUID SIDE
2-WAY VALVE
OUTDOOR
DISCHARGE MUFFLER
EXPANSION VALVE
STRAINER
INTAKE TEMP. SENSOR
PIPE TEMP. SENSOR
HEAT EXCHANGER (EVAPORATOR)
COOLING HEATING
HEAT EXCHANGER (CONDENSER)
GAS SIDE
3-WAY VALVE
4-WAY VALVE
COMPRESSOR TEMP. SENSOR
COMPRESSOR
16
6.2 CU-E18RKUA CU-E24RKUA
INDOOR
OUTDOOR
INTAKE TEMP. SENSOR
PIPE TEMP. SENSOR 1
PIPE TEMP. SENSOR 2
LIQUID SIDE
RECEIVER
EXPANSION VALVE
STRAINER
2-WAY VALVE
INTAKE TEMP. SENSOR
PIPE TEMP. SENSOR
HEAT EXCHANGER (EVAPORATOR)
HEAT EXCHANGER (CONDENSER)
COOLING HEATING
GAS SIDE
3-WAY VALVE
4-WAY VALVE DISCHARGE MUFFLER
COMPRESSOR DISC. SENSOR
COMPRESSOR
17
7. Block Diagram
7.1 CS-E9RKUAW CU-E9RKUA CS-E12RKUAW CU-E12RKUA
18
7.2 CS-E18RKUAW CU-E18RKUA CS-E24RKUAW CU-E24RKUA
19
8. Wiring Connection Diagram
8.1 Indoor Unit
8.1.1 CS-E9RKUAW CS-E12RKUAW
TERMINAL BOARD
BL 1
2
3
R
TO
TEMP.
W
OUTDOOR FUSE
UNIT
102°C
(3A)
AC306 (BLK)
FUSE301 T3.15A L250V
AUTO SW (SW01)
AC303 (WHT) AC304 (RED)
NOISE FILTER CIRCUIT
GROUNDING TERMINAL
Y/G
G G301 (GRN)
COMMUNICATION CIRCUIT
EVAPORATOR
RECTIFICATION CIRCUIT
FAN MOTOR
ELECTRONIC
M
Y
B W BL
7 6 5
CONTROLLER (MAIN)
R
4
1 CNFM (WHT)
1 CNDISP (YLW) 12
WW WW W W W W W
11 CNDISP (WHT) 1 ELECTRONIC CONTROLLER
(DISPLAY & RECEIVER)
REMOTE CONTROLLER
CNMSENS (WHT)
CNMSENS (WHT)
ELECTRONIC CONTROLLER (COMPARATOR) CNSENS1 (WHT) CNSENS1 (YLW)
CNTH (RED)
CNSTM1 (WHT)
CNRMT (WHT)
4 1
1
BR R
O
Y
5
P
REMARKS B : BLUE P : PINK BR : BROWN O : ORANGE BL : BLACK Y : YELLOW W : WHITE G : GREEN R : RED Y/G : YELLOW/GREEN
1 M UP DOWN LOUVER MOTOR
5
6 t
t
1
t
PIPING TEMP. SENSOR 2 (THERMISTOR)
PIPING TEMP. SENSOR 1 (THERMISTOR)
SUCTION TEMP. SENSOR (THERMISTOR)
3
W W
1
1W
8
1
W W
1
3W3
ELECTRONIC CONTROLLER (ECO SENSOR)
20
8.1.2 CS-E18RKUAW CS-E24RKUAW
TERMINAL
BOARD
1
BL
2
3
R
TO
TEMP.
W
OUTDOOR FUSE
UNIT
102°C
(3A)
AC306 (BLK)
FUSE301 T3.15A L250V
AUTO SW (SW01)
AC303 (WHT) AC304 (RED)
NOISE FILTER CIRCUIT
GROUNDING TERMINAL
Y/G
EVAPORATOR
G G301 (GRN)
COMMUNICATION CIRCUIT
RECTIFICATION CIRCUIT
FAN MOTOR
ELECTRONIC
M
Y
B W BL
7 6 5
CONTROLLER (MAIN)
R
4
1 CNFM (WHT)
1 CNDISP (YLW) 12
WWWW W W W W W
11 CNDISP (WHT) 1 ELECTRONIC CONTROLLER
(DISPLAY & RECEIVER)
REMOTE CONTROLLER
CNMSENS (WHT)
CNTH (RED)
CNSTM2 CNSTM1 CNRMT
(YLW)
(WHT)
(WHT)
CNMSENS (WHT)
ELECTRONIC CONTROLLER (COMPARATOR) CN-SENS1 (WHT) CNSENS1 (YLW)
4 1
1
BR R
O
Y
5
P
1
BR R
O
Y
5
P
REMARKS B : BLUE P : PINK BR : BROWN O : ORANGE BL : BLACK Y : YELLOW W : WHITE G : GREEN R : RED Y/G : YELLOW/GREEN 1 M UP DOWN LOUVER MOTOR 5
1 M LEFT RIGHT LOUVER MOTOR
5
6 t
t
1
t
PIPING TEMP. SENSOR 2 (THERMISTOR)
PIPING TEMP. SENSOR 1 (THERMISTOR)
SUCTION TEMP. SENSOR (THERMISTOR)
3
W W
1
1W
8
1
W W
1
3W3
ELECTRONIC CONTROLLER (ECO SENSOR)
21
8.2 Outdoor Unit
8.2.1 CU-E9RKUA CU-E12RKUA
22
POWER SUPPLY
TO INDOOR UNIT
L1
L2
1
2
3
(BLACK) (BLACK) (RED)
WHT RED
TERMINAL BOARD
REACTOR
GRY
GRY
ELECTRONIC-MAGNETIC COIL (EXPANSION VALVE)
M
Resistance of Compressor Windings
CONNECTION 5RS102XHA21
U-V
1.741
U-W
1.765
V-W
1.711
HEATER FUSE 102
T3.15A L250V
GRN
BLK
REMARKS;
BLK
WHT
BLACK; (BLK)
BLUE; (BLU)
WHITE; (WHT)
RED; (RED)
GRAY; (GRY)
GRN
GREEN; (GRN)
BROWN; (BRW)
ORANGE; (ORG)
YELLOW/GREEN; (YLW/GRN)
GRN
DATA (RED)
AC-BLK (BLK)
FUSE 101 20A 250V
COMMUNICATION CIRCUIT
NOISE FILTER CIRCUIT
AC-WHT (WHT)
FG1 (GRN) LJP101 (GRN)
1
FAN MOTOR ORG
ELECTRONIC CONTROLLER
ORG RY-HT2
HT2 (ORG) ACL (BRW)
4
M
5
6 7
CN-DCFM
1 CN4 (BLK)
5 1 CN5 (BLK) 5
HT2 (ORG)
RAT2 (GRY)
RAT1 (GRY)
1 CN-STM 6
PFC CIRCUIT
1
CN-TH
2 3
4
RECTIFICATION CIRCUIT
RECTIFICATION CIRCUIT
1 CN-TANK
3
AIR TEMP. SENSOR (THERMISTOR)
t° t° PIPING TEMP. SENSOR (THERMISTOR)
COMPRESSOR TEMP. SENSOR (THERMISTOR)
t°
CN-HOT 1
YLW
3
YLW
ELECTRONIC-MAGNETIC COIL (4-WAY VALVE)
FUSE 103 T3.15A l250v SWITCHING POWER SUPPLY CIRCUIT
Q1 P
N
U (RED) V (BLU) W (YLW)
RED
BLU
MS
YLW
3~
COMPRESSOR YELLOW (YLW)
BLUE (BLU)
RED (RED)
BRW ACL (BRW)
ELECTRONIC CONTROLLER
(TRADERMARK) COMPRESSOR TERMINAL
THE PARENTHESIZED LETTERS IS INDICATED ON TERMINAL COVER.
8.2.2 CU-E18RKUA CU-E24RKUA
23
POWER SUPPLY
TO INDOOR UNIT
REACTOR
YLW/GRN GRN
GRN
L1 L2
TERMINAL BOARD
TERMINAL BOARD
1
BLK
WHT
WHT
BLK
23
RED
GRY
2 2 GRY
BLK
1 1
BLK
Resistance of Compressor Windings
CONNECTION
5KD240XAF21
U-V
0.720
U-W V-W
0.726 0.708
YLW/GRN YELLOW (YLW)
ACN1 (WHITE)
ACL1
COM3
(BLACK)
(RED)
1
FUSE3
CN-COM
(25A, 250V)
(YELLOW)
COMMUNICATION CIRCUIT
NOISE FILTER CIRCUIT
FG1 (GREEN)
ELECTRONIC CONTROLLER (NOISE FILTER)
4
CN-BLK (BLACK)
CN-WHT (WHITE)
1 CN-FM1 (WHITE)
5
DC-FM1 (ORANGE)
WHT WHT WHT WHT
BLK
WHT
WHT WHT WHT WHT WHT
ORG
1
CN-COM (YELLOW)
L2-1 (GRAY)
4
AC-BLK (BLACK)
FUSE2 (T 3.15A L 250V)
AC-WHT (WHITE) 1
CN-FM1 (WHITE)
5 DC-FM1 (ORANGE)
L2-0 (BLACK)
RECTIFICATION CIRCUIT FUSE1
(T 2.5A L 250V)
ELECTRONIC CONTROLLER (MAIN)
PFC CIRCUIT
Q10
(RED) U
P
U
V (BLUE) V
N
W (YELLOW) W
COMPRESSOR RED 3 3 RED
BLU
BLU MS
YLW
YLW 3~
11
RECTIFICATION CIRCUIT
SWITCHING POWER SUPPLY CIRCUIT
RY-HT
CN-HT (BLACK)
1
HEATER
BLUE (BLU)
RED (RED)
(TRADEMARK)
COMP. TERMINAL
THE PARENTHESIZED LETTERS IS INDICATED ON TERMINAL COVER
14
CN-DCFM 7 (WHITE)
YLW 7 BLU WHT BLK
4 RED
1
DC-FMG YLW DC-FMG
(YELLOW)
(YELLOW)
3
7 FAN MOTOR
CN-EV
(WHITE)
6
1
RY-HOT 1
CN-HOT (BLUE)
3
CN-DIS
(WHITE)
2
1
CN-TH1
(WHITE)
4
1
M
BLU
M
t°
4
ELECTRO-MAGNETIC ELECTRO-MAGNETIC
t° t°
PIPING TEMP. SENSOR (THERMISTOR)
OUTDOOR AIR TEMP. SENSOR (THERMISTOR)
1
COIL
COIL (4-WAY VALVE)
(EXPANSION VALVE)
DISCHARGE TEMP.
SENSOR (THERMISTOR)
9. Electronic Circuit Diagram
9.1 Indoor Unit
9.1.1 CS-E9RKUAW CS-E12RKUAW
TERMINAL
BOARD
1
BL
2
3
R
TO
TEMP.
OUTDOOR FUSE
W
UNIT
102°C
(3A)
AC306 (BLK)
FUSE301 T3.15A L250V
AUTO SW (SW01)
AC303 (WHT) AC304 (RED)
NOISE FILTER CIRCUIT
GROUNDING TERMINAL
Y/G
EVAPORATOR
G G301 (GRN)
COMMUNICATION CIRCUIT
RECTIFICATION CIRCUIT
FAN MOTOR
ELECTRONIC
M
Y
B W BL
7 6 5
CONTROLLER (MAIN)
R
4
R62 15.0k
1 CNFM (WHT)
5V
*R54 *R37 270 10k
5V
*C45
0.1u 4
12V
VCC 1
9 IC03
16
2 IC03 15
3 IC03 14
4 IC03 13
*C49
1
NONE CNRMT
(WHT)
CNSTM1 12V (WHT)
1
5
12
IC03
5
6 IC03 11
5V
7 IC03 10 R47 R46
6
8 GND
C25 R61 1u 20.0k
C27 1u
*R63
1 CNTH *C28 (RED)
5V
5V R89
CNDISP (YLW) 1
*R74 *R75
*C41
C3 0.1u 12
3
1 CNMSENS
(WHT)
ELECTRONIC CONTROLLER 5V_ (DISPLAY & RECEIVER)
IC201
R209 47
Vout 1 Vcc 2 GND 3
WW WW W W W W W
CNDISP (WHT) 11
1
12V
BZ201
BZ
REMOTE CONTROLLER
AUTO HEAT COOL
DRY FAN
FAN SPEED
A IR SW ING
GND GND 45
+ C201 47u
C202 0.01u
c
R218
0
POWER (green)
LED201
R201 470
TIMER
R202 2k
(orange) LED202
ECO NAVI (green)
LED203
R203 27k
R215 0
OFF/ON AUTO
ECONAVI
CO M FO RT
MODE
TEMP AIR SWING
POW ERFUL/ QUIET FAN SPEED
TIMER
ON
SET
1
2
3
OFF
CANCEL AC RC
SET CHECK CLOCK RESET
SEN201 e
NANOE G/AUTO COMF R204 820
R210 JP201
(green)
PCB3
LED204
5V_
R211 JP200
R216 0
Q201 e 10k
b
R212 JP203
R213 JP204 R208
LED205
3 2
1
R207 620
R206 2.7k
R217 0
4.7k c
5V_ Q202 e
10k b
GND-A
POWERFUL/QUIET (orange/green)
4.7k c
BR R O
1 M UP DOWN
Y
LOUVER MOTOR
P
5
PIPING TEMP. SENSOR 2
t
(THERMISTOR)
PIPING TEMP. SENSOR 1
t
(THERMISTOR)
t
SUCTION TEMP. SENSOR
(THERMISTOR)
W
CNMSENS 5V_3 (WHT)
1
ELECTRONIC CONTROLLER (COMPARATOR)
W
R401
W
R402
8
5V_3 R403
6 7
IC401 5
C403
1
8 IC401
2 3
4
1
W W
1
3W3
CNSENS1 (WHT)
CNSENS1 (YLW)
ELECTRONIC CONTROLLER (ECO SENSOR)
24
9.1.2 CS-E18RKUAW CS-E24RKUAW
TERMINAL
BOARD
1
BL
2
3
R
TO
TEMP.
OUTDOOR FUSE
W
UNIT
102°C
(3A)
AC306 (BLK)
FUSE301 T3.15A L250V
AUTO SW (SW01)
AC303 (WHT) AC304 (RED)
NOISE FILTER CIRCUIT
GROUNDING TERMINAL
Y/G
EVAPORATOR
G G301 (GRN)
COMMUNICATION CIRCUIT
RECTIFICATION CIRCUIT
FAN MOTOR
ELECTRONIC
M
Y
B W BL
7 6 5
CONTROLLER (MAIN)
R
4
R62 15.0k
1 CNFM (WHT)
5V
*R54 *R37 270 10k
5V
*C45
0.1u 4
12V
VCC 1
9 IC03
16
2 IC03 15
3 IC03 14
4 IC03 13
*C49
1
NONE CNRMT
(WHT)
CNSTM1 12V (WHT)
1
5 IC03 12
5
6 IC03 11
5V
7 IC03 10 R47 R46
6
8 GND
C25 R61 1u 20.0k
C27 1u *R63
1 CNTH *C28 (RED)
5V
5V R89
CNDISP (YLW) 1
*R74 *R75
*C41
C3 0.1u 12
3
1 CNMSENS
(WHT)
ELECTRONIC CONTROLLER 5V_ (DISPLAY & RECEIVER)
IC201
R209 47
Vout 1 Vcc 2 GND 3
WW WW W W W W W
CNDISP (WHT) 11
1
12V
BZ201
BZ
REMOTE CONTROLLER
AUTO HEAT COOL
DRY FAN
FAN SPEED
A IR SW IN G
GND GND 45
+ C201 47u
C202 0.01u
c
R218
0
POWER (green)
LED201
R201 470
TIMER
R202 2k
(orange) LED202
ECO NAVI (green)
LED203
R203 27k
R215 0
OFF/ON AUTO
ECONAVI
COM FO RT
MODE
TEMP AIR SWING
PO W ER FU L/ QUIET FAN SPEED
TIMER
ON
SET
1
2
3
OFF
CANCEL AC RC
SET CHECK CLOCK RESET
SEN201 e
NANOE G/AUTO COMF R204 820
R210 JP201
(green)
PCB3
LED204
5V_
R211 JP200
R216 0
Q201 e 10k
b
R212 JP203
R213 JP204 R208
LED205
3 2
1
R207 620
R206 2.7k
R217 0
4.7k c
5V_ Q202 e
b 10k
GND-A
POWERFUL/QUIET (orange/green)
4.7k c
BR R O
1 M UP DOWN
Y
LOUVER MOTOR
P
5
PIPING TEMP. SENSOR 2
t
(THERMISTOR)
PIPING TEMP. SENSOR 1
t
(THERMISTOR)
t
SUCTION TEMP. SENSOR
(THERMISTOR)
W
CNMSENS 5V_3 (WHT)
1
ELECTRONIC CONTROLLER (COMPARATOR)
W
R401
W
R402
8
5V_3 R403
6 7
IC401 5
1
W W
1
3W3
C403
1
8 IC401
2 3
4
CNSENS1 (WHT)
CNSENS1 (YLW)
ELECTRONIC
CONTROLLER (ECO SENSOR)
25
9.2 Outdoor Unit
9.2.1 CU-E9RKUA CU-E12RKUA
26
POWER SUPPLY
TO INDOOR UNIT
L1
L2
1
2
3
(BLACK) (BLACK) (RED)
TERMINAL BOARD
REACTOR
ELECTRONIC-MAGNETIC COIL (EXPANSION VALVE)
M
HEATER FUSE 102
T3.15A L250V D29 D28 D27 D26
WHT RED
GRY
GRY
GRN
BLK
BLK
WHT
GRN
DATA (RED)
AC-BLK (BLK)
FUSE 101 20A 250V AC-WHT (WHT)
COMMUNICATION CIRCUIT
NOISE FILTER CIRCUIT
FG1 (GRN)
GRN
LJP101 (GRN)
1
FAN
M
MOTOR
4
5
6 7
CN-DCFM
ORG
ELECTRONIC 5V 5V
HT2 (ORG)
CONTROLLER
R130
R129 1k
CN4 (BLK)
1
1 CN-HT1
1k R118
2
2
1 9 16
R116
3
3
13V
4
4 RY-HT1
IC 1 2
2 15
5
5
IC 1 2
3 14 IC 1 2
4 13
IC 1 2
5 12 IC 1 2
6 11 IC 1 2
7 10 IC 1 2
13_1V
CN5 (BLK)
1
CN-HT2 1
ORG
8
RY-HT2
2
2
3
3
4
4 RY-HT2
HT2 (ORG)
5
5
RAT2 (GRY)
RAT1 (GRY)
CN-STM 1 2 3 4 5 6 13V
5V
PFC CIRCUIT RECTIFICATION CIRCUIT RECTIFICATION CIRCUIT
FUSE 103 T3.15A l250v
Q1 P
N
U (RED) V (BLU) W (YLW)
C80 R11 15.8k
C6 1
C3 1
R12
CN-TH
15.0k
(WHT)
1
C7 1
2 3
4
CN-TANK 5V (WHT)
1
3
R1
4.99k CN-HOT (WHT) 1
D19 3
AIR TEMP. SENSOR (THERMISTOR)
t° t° PIPING TEMP. SENSOR (THERMISTOR) COMPRESSOR TEMP. SENSOR (THERMISTOR) t°
YLW ELECTRONIC-MAGNETIC COIL (4-WAY VALVE)
YLW
RED
BLU
MS
YLW
3~
SWITCHING POWER SUPPLY
CIRCUIT
ELECTRONIC CONTROLLER
COMPRESSOR
ACL (BRW)
BRW
ACL (BRW)
9.2.2 CU-E18RKUA CU-E24RKUA
27
POWER SUPPLY
TO INDOOR UNIT
REACTOR
YLW/GRN GRN
GRN
YLW/GRN
L1 L2
TERMINAL BOARD
TERMINAL BOARD
1
2
3
BLK
WHT
WHT
BLK
RED
ACN1 (WHITE)
ACL1 (BLACK)
COM3 (RED)
5V CN-COM (YELLOW)
FUSE3 (25A, 250V)
COMMUNICATION CIRCUIT
c Q25 4.7k b 10k
e
1 2 3 4
CN-BLK (BLACK)
NOISE FILTER
CIRCUIT
CN-WHT
(WHITE)
FG1 (GREEN)
5V CN-FM1 (WHITE)
1
2
ELECTRONIC CONTROLLER (NOISE FILTER)
15V_2 3 4 5
DC-FM1 (ORANGE)
WHT WHT WHT WHT
BLK
WHT
WHT WHT WHT WHT WHT
ORG
GRY
BLK
2 2
GRY
1 1
BLK
CN-COM 5V
(YELLOW)
1 2 3 4
L2-1 (GRAY)
L2-0 (BLACK)
AC-BLK (BLACK)
FUSE2 (T 3.15A L 250V) RECTIFICATION
CIRCUIT
AC-WHT (WHITE)
CN-FM1
5V
(WHITE)
1
2 3
C209 15V_2
4
5 +
C259 C260
DC-FM1 (ORANGE)
FUSE1 (T 2.5A L 250V)
RECTIFICATION CIRCUIT
ELECTRONIC CONTROLLER (MAIN)
PFC CIRCUIT
Q10 P
N
COMPRESSOR
(RED) U RED 3 3 RED
U
V (BLUE) V BLU W (YELLOW) W YLW
BLU MS YLW 3 ~
11
SWITCHING POWER SUPPLY CIRCUIT
RY-HT
CN-HT (BLACK)
1
HEATER
3
14
CN-DCFM 7 (WHITE)
YLW 7 BLU WHT BLK
4 RED
1
7 FAN MOTOR M
4 1
DC-FMG YLW DC-FMG
(YELLOW)
(YELLOW)
5V 5V
*D36 *D35 *D34 13V *D33
RY-HOT
C47 R102 C212 1 4.99k 1
R101 15.8k C251 220 C46
1
R100 15.0k C45
1
*C84 65 43 2 1
CN-EV (WHITE)
M
1
3
CN-HOT BLU (BLUE)
ELECTRO-MAGNETIC ELECTRO-MAGNETIC
COIL
COIL (4-WAY VALVE)
(EXPANSION VALVE)
21 CN-DIS (WHITE)
t°
4 3 21
CN-TH1 (WHITE) t° t°
PIPING TEMP. SENSOR (THERMISTOR)
OUTDOOR AIR TEMP. SENSOR (THERMISTOR)
DISCHARGE TEMP. SENSOR (THERMISTOR)
10. Printed Circuit Board
10.1 Indoor Unit
10.1.1 Main Printed Circuit Board
10.1.2
JP1 (Random Auto Restart enable/disable)
Indicator Printed Circuit Board
CN-FM
CN-RMT
CN-STM2 (E18/24RKUAW only) CN-STM1
CN-MSENS CN-DISP CN-TH
CN-DISP
28
10.1.3 Comparator Printed Circuit Board
CN-SENS1 CN-MSENS
CN-SENS2
29
10.2 Outdoor Unit
10.2.1 Main Printed Circuit Board 10.2.1.1 CU-E9RKUA CU-E12RKUA
FG1
CN-DCFM CN5 CN4
CN-STM CN-TANK
CN-TH CN-HOT
AC-BLK AC-WHT DATA
CURRENT TRANSFORMER (CT)
POWER TRANSISTOR
(IPM)
30
10.2.1.2 CU-E18RKUA CU-E24RKUA
CN-TH1 CN-EV CN-DIS
CN-HT CN-HOT AC-BLK AC-WHT CURRENT TRANSFORMER
(CT)
DC-FMG
CN-S CN-COM CN-FM1 DC-FM1
POWER TRANSISTOR (IPM)
31
10.2.2 Noise Filter Printed Circuit Board 10.2.2.1 CU-E18RKUA CU-E24RKUA
32
11. Installation Instruction (E9RK and E12RK)
11.1 Select the Best Location
11.1.1 Indoor Unit
Do not install the unit in excessive oil fume area such as kitchen, workshop and etc.
There should not be any heat source or steam near the unit.
There should not be any obstacles blocking the air circulation.
A place where air circulation in the room is good. A place where drainage can be easily done. A place where noise prevention is taken into
consideration. Do not install the unit near the door way. Ensure the spaces indicated by arrows from the
wall, ceiling, fence or other obstacles. Recommended installation height for indoor unit
shall be at least 8 ft (2.4 m).
11.1.2 Outdoor Unit
If an awning is built over the unit to prevent direct sunlight or rain, be careful that heat radiation from the condenser is not obstructed.
There should not be any animal or plant which could be affected by hot air discharged.
Keep the spaces indicated by arrows from wall, ceiling, fence or other obstacles.
Do not place any obstacles which may cause a short circuit of the discharged air.
If piping length is over the [piping length for additional gas], additional refrigerant should be added as shown in the table.
Recommended installation height for outdoor unit should be above the seasonal snow level.
Model
Capacity (Btu/h)
Piping size Gas Liquid
Std. Length
Min. Max. Piping Elevation Length
Max. Piping Length
Additional Refrigerant
Piping Length for add.
gas
E9RKUAW E12RKUAW
9000 11500
3/8" (9.52 mm) 1/4" 24.6 ft
1/2" (6.35 mm) (7.5 m) (12.7 mm)
49.2 ft (15 m)
9.8 ft 65.6 ft (3 m) (20 m)
0.2 oz/ft (20 g/m)
24.6 ft (7.5 m)
Example: For E9RKUAW If the unit is installed at 32.8 ft (10 m) distance, the quantity of additional refrigerant should be 1.64 oz (50 g) .... (32.8 - 24.6) ft x 0.2 oz/ft = 1.64 oz. ((10 -7.5) m x 20 g/m = 50 g).
11.1.3 Indoor/Outdoor Unit Installation Diagram
Piping direction
Do not bend up (Front side) drain hose
Right
Rear
Right Left
Left
bottom Rear Left bottom
Installation parts you should purchase ()
2 9/16" (65 mm) or more
1 31/32"
(50 mm)
or more
(Left and right are identical) Floor / Grade level
Insulation of piping connections · Carry out insulation after
checking for gas leaks and secure with vinyl tape. Vinyl tape
Attaching the remote control holder to the wall Remote control holder fixing screws 6
Remote control 3
Remote control holder 5
It is advisable to avoid more than 2 blockage directions. For better ventilation & multiple-outdoor installation, please consult authorized dealer/specialist.
o(1r 03m0o1m5re/1m6)" (319030o/0r8m"momre)
· This illustration is for explanation purposes only. The indoor unit will actually face a different way.
o(r103m0o1r5me/1m6)"
8 ft (2.4 m) or more
Installation plate 1 Bushing-Sleeve () Sleeve ()
Putty () (Gum Type Sealer)
Bend the pipe as closely on the wall as possible, but be careful that it doesn't break.
Vinyl tape (wide) () · Apply after carrying
out a drainage test. · To carry out the
drainage test, remove the air filters and pour water into the heat exchanger.
Saddle ()
o(r3m0101orm1e3m/1)6"
Conduit (Power supply cord ())
Conduit (Connection cable) Liquid side piping ()
Gas side piping () Additional drain hose ()
Control Board cover
33
11.2 Indoor Unit
11.2.1 How to Fix Installation Plate
The mounting wall shall be strong and solid enough to prevent it from the vibration.
Wall More than 1
Wall Wall
More than 1
Indoor unit 2 screw
More than 2
3
4
Measuring Tape
9 17/32" (241.5 mm)
5 1/16" (128 mm)
5 1/16" (128 mm)
6
5
Installation plate 1
For best strength of INDOOR unit installation, it is highly recommended to locate " " at 5 position as shown.
9 17/32" (241.5 mm)
5 1/16" (128 mm)
Model
E9RKUAW, E12RKUAW
or
Dimension
1
2
3
4
5
6
19 9/32" 3 7/32" 17 9/32"
17"
1 11/16" 3 3/4"
(490 mm) (82 mm) (439 mm) (432 mm) (43 mm) (95 mm)
The center of installation plate should be at more than at right and left of the wall. The distance from installation plate edge to ceiling should more than . From installation plate left edge to unit's left side is . From installation plate right edge to unit's right side is .
B : For left side piping, piping connection for liquid should be about from this line.
: For left side piping, piping connection for gas should be about from this line.
1 Mount the installation plate on the wall with 5 screws or more (at least 5 screws). (If mounting the unit on the concrete wall, consider using anchor bolts.) o Always mount the installation plate horizontally by aligning the marking-off line with the thread and using a level gauge.
2 Drill the piping plate hole with ø2 3/4" (ø70 mm) hole-core drill. o Line according to the left and right side of the installation plate. The meeting point of the extended line is the center of the hole. Another method is by putting measuring tape at position as shown in the diagram above. The hole center is obtained by measuring the distance namely 5 1/16" (128 mm) for left and right hole respectively. o Drill the piping hole at either the right or the left and the hole should be slightly slanting to the outdoor side.
11.2.2 To Drill a Hole in the Wall and Install a Sleeve of Piping
1 Insert the piping sleeve to the hole. 2 Fix the bushing to the sleeve. 3 Cut the sleeve until it extrudes about 19/32"
(15 mm) from the wall.
CAUTION
When the wall is hollow, please be sure to use the sleeve for tube assembly to prevent dangers caused by mice biting the connection cable.
Indoor
Wall Outdoor
Sleeve for tube assembly
19/32" (15 mm)
Approx. 7/32" - 9/32"
(5-7 mm)
4 Finish by sealing the sleeve with putty or caulking compound at the final stage.
ø2 3/4" (ø70 mm) through hole
Bushing for tube assembly
Putty or caulking compound
34
11.2.3 Indoor Unit Installation
Do not turn over the unit without it's shock absorber during pull out the piping. It may cause intake grille damage. Use shock absorber during pull out the piping to protect the intake grille from damage.
pull out the piping Piping
pull out the piping Piping
PUSH
PUSH
PUSH
PUSH
Intake grille
11.2.3.1 For the right rear piping
Step-1 Pull out the Indoor piping
Step-2 Install the Indoor Unit
Step-3 Secure the Indoor Unit
Step-4 Insert the connection cable
11.2.3.2 For the right bottom piping
Step-1 Pull out the Indoor piping
Step-2 Install the Indoor Unit
Step-3 Insert the connection cable
Step-4 Secure the Indoor Unit
11.2.3.3 For the embedded piping
Step-1 Replace the drain hose
Step-2 Bend the embedded piping
· Use a spring bender or equivalent to bend the piping so that the piping is not crushed.
Step-3 Pull the connection cable into Indoor Unit
· The inside and outside connection cable can be connected without removing the front grille.
Step-4 Cut and flare the embedded piping
· When determining the dimensions of the piping, slide the unit all the way to the left on the installation plate.
· Refer to the section "Cutting and flaring the piping".
Step-5 Install the Indoor Unit
Step-6 Connect the piping
· Please refer to "Connecting the piping" column in outdoor unit section. (Below steps are done after connecting the outdoor piping and gas-leakage confirmation.)
Step-7 Insulate and finish the piping
· Please refer to "Insulation of piping connection" column as mentioned in indoor/outdoor unit installation.
Step-8 Secure the Indoor Unit
Shock absorber
Right Rear piping
Tape it with piping in a position as
mentioned in Fig. below.
Piping
Drain hose
Cover for the bottom piping
How to keep the cover
In case of the cover is cut, keep the cover at the rear of chassis as shown in the illustration for future reinstallation. (Left and 2 bottom covers for piping.)
Cover Cover for the for the bottom piping left
piping
Cover for piping
Right and Right Bottom piping
Tape it with piping in a position as mentioned
in Fig. below.
Piping
Drain hose
Cover for the right piping
Cover for Cover for the the left bottom piping piping
Install the indoor unit
Hook the indoor unit onto the upper portion of installation plate. (Engage the indoor unit with the upper edge of the installation plate). Ensure the hooks are properly seated on the installation plate by moving it in left and right.
Secure the Indoor Unit
1. Press the lower left and right side of the unit against the installation plate until hooks engages with their slot (sound click).
Indoor unit Unit's hook
Hooks at installation plate Sleeve for piping hole
Piping Drain hose
Installation plate
marking
To take out the unit, push the marking at the bottom unit, and pull it slightly towards you to disengage the hooks from the unit.
Insert the connection cable
(720-38/40"m- 3mAb)5/o32u"t
Guide surface
Connection cable
Connection cable
Gas side piping
Liquid side piping
Drain hose
(This can be used for left rear piping and bottom piping also.)
35
Replace the drain hose Rear view for left piping installation
Drain cap
Drain hose
Drain hose Connection cable
Adjust the piping slightly downwards.
· How to pull the piping and drain hose out, in case of embedded piping.
Apply putty or caulking material to seal the wall opening.
M3o7re13th/3a2n"
(950 mm) Connection
cable
Piping
More than 27 9/16" (700 mm)
PVC tube for drain hose (VP-20)
18M1/o2r"e(t4h7a0n mm)
Drain hose from main unit
PVC tube (VP-65) for piping
and connection cable
PVC tube for drain hose (VP-30)
PVC tube for drain hose
Cable Piping
Indoor unit 3 15/16" (100 mm)
Drain hose adapter 9 usage
· Join indoor drain hose to 3/4" (20 mm) nominal PVC pipe size
by using drain hose adapter 9 when necessary.
Remarks : Make sure indoor unit drain hose & 3/4" (20 mm) nominal PVC pipe
are fully inserted to drain hose adapter 9.
Piping Drain hose
Connection cable
More than 37 13/32" (950 mm)
Sleeve for piping hole
· How to insert the connection cable and drain hose
in the case of left piping.
45° Drain hose
Cable Piping
(For right piping, follow the same procedure)
Indoor unit drain hose
Close join by Vinyl Tape ( )
Drain hose adapter 9
11.2.4 Connect the Cable to the Indoor Unit
1. The inside and outside connection cable can be connected without removing the front grille.
2. Unscrew the conduit cover and fix the conduit connector to conduit cover with lock nut, then secure it against chassis.
3. Connection cable between indoor unit and outdoor unit should be UL listed or CSA approved 4 conductor wires minimum AWG16 in accordance with local electric codes.
4. Connection cable between indoor unit and outdoor unit should be UL listed or CSA approved 4 conductor wires minimum AWG16 in accordance with local electric codes. o Ensure the colour of wires of outdoor unit and terminal number are the same as the indoor's repectively.
Terminals on the indoor unit
1
Colour of wires (connection cable)
Terminals on the outdoor unit
1
23 23
WARNING
This equipment must be properly earthed.
3/4" (20 mm) nominal PVC pipe - Install incline downward more than 1° - Apply PVC glue at the join.
o Earth lead wire shall be Yellow/Green (Y/G) in colour and shall be longer than other lead wires as shown in the figure for electrical safety in case of the slipping.
Conduit Connector
Lock Nut
Conduit Cover
Chassis
Rear Side of Indoor Unit
Terminal Board
123
Indoor and outdoor connection cable
Earth Wire longer than others AC wires for safety reason
Holder
36
11.2.5 Wiring Stripping and connecting requirement
Wire stripping
13/32" ± 1/16" (10±1 mm)
No loose strand when inserted
WARNING
RISK OF FIRE
JOINING OF WIRES MAY CAUSE OVERHEATING AND FIRE.
Do not joint wires
Indoor/outdoor connection terminal board
7/32" (5 mm) or more
(gap between wires)
Conductor
Conductor Conductor not
fully inserted over inserted fully inserted
ACCEPT PROHIBITED PROHIBITED OR
OR
OR
Use complete wire without joining.
Use approved socket and plug with earth pin. Wire connection in this area must follow to national wiring rules.
11.2.5.1 Cutting and flaring the piping
1 Please cut using pipe cutter and then remove the burrs. 2 Remove the burrs by using reamer. If burrs are not removed, gas leakage may be caused. Turn the piping
end down to avoid the metal powder entering the pipe. 3 Please make flare after inserting the flare nut onto the copper pipes.
1. To cut
Improper flaring
Pipe Reamer
Handle
Bar
Yoke
Core
0 1/32" (0-0.5 mm) Bar
Inclined Surface Cracked Uneven
damaged
thickness
Point down 2. To remove burrs
Clamp handle Red arrow mark 3. To flare
Copper pipe
When properly flared, the internal surface of the flare will evenly shine and be of even thickness. Since the flare part comes into contact with the connections, carefully check the flare finish.
37
11.3 Outdoor Unit
11.3.1 Install the Outdoor Unit
After selecting the best location, start installation according to indoor/outdoor unit installation diagram. 1 Fix the unit on concrete or rigid frame firmly and horizontally by bolt nut (ø13/32" (ø10 mm)). 2 When installing at roof, please consider strong wind and earthquake. Please fasten the installation stand firmly with bolt or nails.
A
B
C D
Model
A
B
C
D
E9RKUA, E12RKUA
22-7/16" (570 mm)
4-1/8" 23/32" (105 mm) (18.5 mm)
12-19/32" (320 mm)
11.3.2 Connect the Piping
11.3.2.1 Connecting the piping to indoor
Please make flare after inserting flare nut (locate at joint portion, of tube assembly) onto the copper pipe. (In case of using long piping)
Connect the piping Align the center of piping and sufficiently tighten
the flare nut with fingers. Further tighten the flare nut with torque wrench in
specified torque as stated in the table.
11.3.2.2 Connecting the piping to outdoor
Decide piping length and then cut by using pipe cutter. Remove burrs from cut edge. Make flare after inserting the flare nut (locate at valve) onto the copper pipe. Align center of piping to valves and then tighten with torque wrench to the specified torque as stated in the table.
Do not over tighten, over tightening may cause gas leakage.
Piping size
Torque
1/4" (6.35 mm)
13.3 Ibf.ft [18 N·m (1.8 kgf·m)]
3/8" (9.52 mm)
31.0 Ibf.ft [42 N·m (4.3 kgf·m)]
1/2" (12.7 mm)
40.6 Ibf.ft [55 N·m (5.6 kgf·m)]
5/8" (15.88 mm)
47.9 Ibf.ft [65 N·m (6.6 kgf·m)]
3/4" (19.05 mm)
73.8 Ibf.ft [100 N·m (10.2 kgf·m)]
Spanner or Wrench
Torque wrench
38
11.3.2.3 Connecting the piping to outdoor multi
Decide piping length and then cut by using pipe cutter. Remove burrs from cut edge. Make flare after inserting the flare nut (locate at valve) onto the copper pipe. Align center of piping to valve and then tighten with torque wrench to the specified torque as stated in the table.
Male side
Hall Union
(Auxiliary pipe)
Wrench (Adjustable Wrench)
Hall Union
Male side
(Auxiliary pipe)
Wrench (Adjustable Wrench) Torque Wrench for Flare Nut and Pipe Size Reducer
Flare Nut
Female side
Applicable to
(Connection pipe)
Liquid and Gas side of
CS-E9RKUAW
Torque Wrench for Flare Nut
Liquid side of CS-E12RKUAW
Packing
Pipe Size Reducer
Flare Nut
Female side
(Connection pipe)
Applicable to Gas side of CS-E12RKUAW
11.3.2.4 Gas Leak Checking
Pressure test to system to 400 PSIG with dry nitrogen, in stages. Thoroughly leak check the system. If the pressure holds, release the nitrogen and proceed to section 11.3.3.
11.3.3 Evacuation of the equipment
WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES in the following procedures.
Vacuum pump
Indoor unit
Liquid side Two-way valve Outdoor unit
Gas side
Close
OPEN
Lo
Hi
Three-way valve Close
CLOSE
1. Connect a charging hose with a push pin to the Low side of a charging set and the service port of the 3-way valve.
2. Connect the micron gauge between vacuum pump and service port of outdoor units. 3. Turn on the power switch of the vacuum pump and make sure that connect digital micron gauge and to pull
down to a value of 500 microns. 4. To make sure micron gauge a value 500 microns and close the low side valve of the charging set and turn off
the vacuum pump. 5. Disconnect the vacuum pump house from the service port of the 3-way valve. 6. Tighten the service port caps of the 3-way valve at a torque of 13.3 Ibf.ft (18 N·m) with a torque wrench. 7. Remove the valve caps of both of the 2-way valve and 3-way valve. Position both of the valves to "Open"
using a hexagonal wrench (5/32" (4 mm)). 8. Mount valve caps onto the 2-way valve and the 3-way valve.
o Be sure to check for gas leakage.
· If micron gauge value does not descend 500 microns, take the following measures:
- If the leak stops when the piping connections are tightened further, continue working from step 3.
- If the leak does not stop when the connections are retightened, repair location of leak.
- Do not release refrigerant during piping work for installation and reinstallation.
- Be careful with the liquid refrigerant, it may cause frostbite.
39
11.3.3.1 Connect the Cable to the Outdoor Unit
1. Remove Top panel. 2. Remove Control Board Cover (Resin and
Metal). 3. Remove Plugs. 4. Fix the conduit connectors to the knockout
holes with lock-nuts, then secure them against the side panel. 5. All wires pass through conduits. 6. Connection cable between indoor unit and outdoor unit should be UL listed or CSA approved 4 conductor wires minimum AWG16 in accordance with local electric codes. 7. Wire connection to the power supply (208/230V 60Hz) through circuit breaker. o Connect the UL listed or CSA approved
wires minimum AWG14 to the terminal board, and connect the other end of the wires to ELCB / GFCI. 8. Connect the power supply cord and connection cable between indoor unit and outdoor unit according to the diagram below.
Control Board Metal Cover
Control Board Cover (Resin)
Indoor Unit Terminal 1 2 3
208/230V min AWG16 208/230V min AWG16 208/230V min AWG16
Grounding wire min AWG16
* Ensure all connecting wire between indoor unit and outdoor unit and power supply cord are installed in individual conduit.
Outdoor Unit
Terminal 1 2 3 Disconnect Switch Field supply
L1 L2
Grounding wire
Top Panel
Power Supply Wires
Lock Nuts
Knockout Holes
Plugs
Connectors
Side Panel
Power Supply Single Phase 208/230V 60Hz min AWG14
9. Secure the wire onto the control board with the holder (clamper).
10. After completing wiring connections, reattach the control board cover (Metal and Resin) and the top panel to the original position with the screws.
11. For wire stripping and connection requirement, refer to instruction 11.2.5 of indoor unit.
WARNING
This equipment must be properly earthed.
Earth lead wire shall be Yellow/Green (Y/G) in colour and shall be longer than other lead wires as shown in the figure for electrical safety in case of the slipping.
Earth wire longer than others AC wires for safety reason
L1 L2 1 2 3
Terminal Board
Earth wire longer than others AC wires for safety reason
Holder
Power supply cord
Indoor & outdoor connection cable
11.3.3.2 Piping Insulation
1. Please carry out insulation at pipe connection portion as mentioned in Indoor/Outdoor Unit Installation Diagram. Please wrap the insulated piping end to prevent water from going inside the piping.
2. If drain hose or connecting piping is in the room (where dew may form), please increase the insulation by using POLY-E FOAM with thickness 1/4" (6 mm) or above.
40
12. Installation Instruction (E18RK and E24RK)
12.1 Select the Best Location
12.1.1 Indoor Unit
Do not install the unit in excessive oil fume area such as kitchen, workshop and etc.
There should not be any heat source or steam near the unit.
There should not be any obstacles blocking the air circulation.
A place where air circulation in the room is good. A place where drainage can be easily done. A place where noise prevention is taken into
consideration. Do not install the unit near the door way. Ensure the spaces indicated by arrows from the
wall, ceiling, fence or other obstacles. Recommended installation height for indoor unit
shall be at least 8 ft (2.4 m).
12.1.2 Outdoor Unit
If an awning is built over the unit to prevent direct sunlight or rain, be careful that heat radiation from the condenser is not obstructed.
There should not be any animal or plant which could be affected by hot air discharged.
Keep the spaces indicated by arrows from wall, ceiling, fence or other obstacles.
Do not place any obstacles which may cause a short circuit of the discharged air.
If piping length is over the [piping length for additional gas], additional refrigerant should be added as shown in the table.
Recommended installation height for outdoor unit should be above the seasonal snow level.
Model
Capacity (Btu/h)
Piping size
Gas
Liquid
Std. Length
Max. Elevation
Min. Piping Length
Max. Piping Length
Piping Additional Length Refrigerant for add.
gas
E18RKUA E24RKUA
17200 24000
1/2" (12.7 mm) 1/4"
5/8" (6.35 mm) (15.88 mm)
24.6 ft (7.5 m)
49.2 ft (15 m)
9.8 ft 100.0 ft 0.3 oz/ft 32.8 ft (3 m) (30.5 m) (25 g/m) (10 m)
Example: For E18RKUA If the unit is installed at 41 ft (12.5 m) distance, the quantity of additional refrigerant should be 2.46 oz (62.5 g) .... (41 - 32.8) ft x 0.3 oz/ft = 2.46 oz. ((12.5 - 10) m x 25 g/m = 62.5 g).
12.1.3 Indoor/Outdoor Unit Installation Diagram
Piping direction
Attention not to bend (Front side) up drain hose
Right
Rear
Right Left
Left
bottom Rear Left bottom
Installation parts you should purchase ()
2 9/16" (65 mm) or more
1 31/32" (50 mm) or more
(Left and right are identical) Floor / Grade level
Insulation of piping connections
· Carry out insulation after checking for gas leaks and secure with vinyl tape.
Vinyl tape
Attaching the remote control holder to the wall Remote control holder fixing screws 6
Remote control 3
Remote control holder 5
It is advisable to avoid more than 2 blockage directions. For better ventilation & multiple-outdoor installation, please consult authorized dealer/specialist.
o(r10m30o1mr5e/m16)" (319030o/08r"mmmor)e
· This illustration is for explanation purposes only. The indoor unit will actually face a different way.
8 ft (2.4 m) or more
o(r103m0o1r5m/e1m6)"
Installation plate 1 Bushing-Sleeve () Sleeve ()
Putty () (Gum Type Sealer)
Bend the pipe as closely on the wall as possible, but be careful that it doesn't break.
Vinyl tape (wide) () · Apply after carrying
out a drainage test. · To carry out the
drainage test, remove the air filters and pour water into the heat exchanger.
Saddle ()
Conduit (Power supply cord ())
o(r3m0101orm1e3m/1)6"
Conduit (Connection cable) Liquid side piping () Gas side piping ()
Additional drain hose
Control Board cover
41
12.2 Indoor Unit
12.2.1 How to Fix Installation Plate
The mounting wall shall be strong and solid enough to prevent it from the vibration.
Wall
More than 1
Wall
More than 1
Wall
Indoor unit 2 screw
More than 2
3
4
Measuring Tape
9 17/32" (241.5 mm)
5 1/16" (128 mm)
5 1/16" (128 mm)
6 5
Installation plate 1
For best strength of INDOOR unit installation, it is highly recommended to locate " " at 5 position as shown.
9 17/32" (241.5 mm)
5 1/16" (128 mm)
Model E18RKUA, E24RKUA
1
23 7/32" (590 mm)
2
3 7/32" (82 mm)
Dimension
3
4
21 7/32" 20 15/16" (539 mm) (532 mm)
5
6 21/32" (169 mm)
6
8 5/8" (219 mm)
The center of installation plate should be at more than at right and left of the wall. The distance from installation plate edge to ceiling should more than . From installation plate left edge to unit's left side is . From installation plate right edge to unit's right side is .
B : For left side piping, piping connection for liquid should be about from this line.
: For left side piping, piping connection for gas should be about from this line.
1 Mount the installation plate on the wall with 5 screws or more (at least 5 screws). (If mounting the unit on the concrete wall, consider using anchor bolts.) o Always mount the installation plate horizontally by aligning the marking-off line with the thread and using a level gauge.
2 Drill the piping plate hole with ø2 3/4" (ø70 mm) hole-core drill. o Line according to the left and right side of the installation plate. The meeting point of the extended line is the center of the hole. Another method is by putting measuring tape at position as shown in the diagram above. The hole center is obtained by measuring the distance namely 5 1/16" (128 mm) for left and right hole respectively. o Drill the piping hole at either the right or the left and the hole should be slightly slanting to the outdoor side.
12.2.2 To Drill a Hole in the Wall and Install a Sleeve of Piping
1 Insert the piping sleeve to the hole. 2 Fix the bushing to the sleeve. 3 Cut the sleeve until it extrudes about 19/32"
(15 mm) from the wall.
CAUTION
When the wall is hollow, please be sure to use the sleeve for tube assembly to prevent dangers caused by mice biting the connection cable.
Indoor
Wall Outdoor
Sleeve for tube assembly
19/32" (15 mm)
Approx. 7/32" - 9/32" (5 - 7 mm)
4 Finish by sealing the sleeve with putty or caulking compound at the final stage.
ø2 3/4" (ø70 mm) through hole
Bushing for tube assembly
Putty or caulking compound
42
12.2.3 Indoor Unit Installation
Do not turn over the unit without it's shock absorber during pull out the piping. It may cause intake grille damage. Use shock absorber during pull out the piping to protect the intake grille from damage.
pull out the piping Piping
pull out the piping Piping
PUSH
PUSH
PUSH
PUSH
Intake grille
12.2.3.1 For the right rear piping
Step-1 Pull out the Indoor piping
Step-2 Install the Indoor Unit
Step-3 Secure the Indoor Unit
Step-4 Insert the connection cable
12.2.3.2 For the right bottom piping
Step-1 Pull out the Indoor piping
Step-2 Install the Indoor Unit
Step-3 Insert the connection cable
Step-4 Secure the Indoor Unit
12.2.3.3 For the embedded piping
Step-1 Replace the drain hose
Step-2 Bend the embedded piping
· Use a spring bender or equivalent to bend the piping so that the piping is not crushed.
Step-3 Pull the connection cable into Indoor Unit
· The inside and outside connection cable can be connected without removing the front grille.
Step-4 Cut and flare the embedded piping
· When determining the dimensions of the piping, slide the unit all the way to the left on the installation plate.
· Refer to the section "Cutting and flaring the piping".
Step-5 Install the Indoor Unit
Step-6 Connect the piping
· Please refer to "Connecting the piping" column in outdoor unit section. (Below steps are done after connecting the outdoor piping and gas-leakage confirmation.)
Step-7 Insulate and finish the piping
· Please refer to "Piping and finishing" column of outdoor section and "Insulation of piping connection" column as mentioned in indoor/outdoor unit installation.
Step-8 Secure the Indoor Unit
Shock absorber
Right Rear piping
Tape it with piping in a position as
mentioned in Fig. below.
Piping
Drain hose
Cover for the bottom piping
How to keep the cover
In case of the cover is cut, keep the cover at the rear of chassis as shown in the illustration for future reinstallation. (Left and 2 bottom covers for piping.)
Cover Cover for the for the bottom piping left
piping
Cover for piping
Right and Right Bottom piping
Tape it with piping in a position as mentioned
in Fig. below.
Piping
Drain hose
Cover for the right piping
Cover for Cover for the the left bottom piping piping
Install the indoor unit
Hook the indoor unit onto the upper portion of installation plate. (Engage the indoor unit with the upper edge of the installation plate). Ensure the hooks are properly seated on the installation plate by moving it in left and right.
Secure the Indoor Unit
1. Press the lower left and right side of the unit against the installation plate until hooks engages with their slot (sound click).
Indoor unit Unit's hook
Hooks at installation plate Sleeve for piping hole
Piping Drain hose
Installation plate
marking
To take out the unit, push the marking at the bottom unit, and pull it slightly towards you to disengage the hooks from the unit.
Insert the connection cable
(720-38/40"m- 3mAb)5/o32u"t
Guide surface
Connection cable
Connection cable
Gas side piping
Liquid side piping
Drain hose
(This can be used for left rear piping and bottom piping also.)
43
Replace the drain hose Rear view for left piping installation
Drain cap
Drain hose
Drain hose Connection cable
Adjust the piping slightly downwards.
· How to pull the piping and drain hose out, in case of embedded piping.
Apply putty or caulking material to seal the wall opening.
M4o5(r1e91/t53h20a"nmm)
Connection cable
Piping
More than 27 9/16" (700 mm)
PVC tube for drain hose (VP-20)
PVC tube for drain hose
More 18 1/2"
than (470
mm)
Drain hose from main unit
PVC tube (VP-65) for piping
and connection cable
PVC tube for drain hose (VP-30)
Cable
Piping
Indoor unit 2 27/32" (72 mm)
Drain hose adapter 9 usage
· Join indoor drain hose to 3/4" (20 mm) nominal PVC pipe size
by using drain hose adapter 9 when necessary.
Remarks : Make sure indoor unit drain hose & 3/4" (20 mm) nominal PVC pipe
are fully inserted to drain hose adapter 9.
12.2.4 Connect the Cable to the Indoor Unit
1. The inside and outside connection cable can be connected without removing the front grille.
2. Unscrew the conduit cover and fix the conduit connector to conduit cover with lock nut, then secure it against chassis.
3. Connecting wire between indoor unit and outdoor unit should be UL listed or CSA approved 4 conductor wires minimum AWG16 in accordance with local electric codes. o Ensure the colour of wires of outdoor unit and terminal number are the same as the indoor's repectively.
Terminals on the indoor unit
123
Colour of wires (Connecting wire)
Terminals on the outdoor unit
123
WARNING
This equipment must be properly earthed.
o Earth lead wire shall be Yellow/Green (Y/G) in colour and shall be longer than other lead wires as shown in the figure for electrical safety in case of the slipping.
44
Piping Drain hose
Connection cable
More than 45 9/32" (1150 mm)
Sleeve for piping hole
· How to insert the connection cable and drain hose
in the case of left piping.
45° Drain hose
Cable Piping
(For right piping, follow the same procedure)
Indoor unit drain hose
Close join by Vinyl Tape ( )
Drain hose adapter 9
3/4" (20 mm) nominal PVC pipe - Install incline downward more than 1° - Apply PVC glue at the join.
Conduit Connector
Lock Nut
Conduit Cover
Chassis
Rear Side of Indoor Unit
Terminal Board
123
Indoor and outdoor connection cable
Earth Wire longer than others AC wires for safety reason
Holder
12.2.5 Wiring Stripping and connecting requirement
Wire stripping
13/32" ± 1/16" (10±1 mm)
No loose strand when inserted
WARNING
RISK OF FIRE
JOINING OF WIRES MAY CAUSE OVERHEATING AND FIRE.
Do not joint wires
Indoor/outdoor connection terminal board
7/32" (5 mm) or more
(gap between wires)
Conductor
Conductor Conductor not
fully inserted over inserted fully inserted
ACCEPT PROHIBITED PROHIBITED OR
OR
OR
Use complete wire without joining.
Use approved socket and plug with earth pin. Wire connection in this area must follow to national wiring rules.
12.2.5.1 Cutting and flaring the piping
1 Please cut using pipe cutter and then remove the burrs. 2 Remove the burrs by using reamer. If burrs are not removed, gas leakage may be caused. Turn the piping
end down to avoid the metal powder entering the pipe. 3 Please make flare after inserting the flare nut onto the copper pipes.
1. To cut
Improper flaring
Pipe Reamer
Handle
Bar
Yoke
Core
0 1/32" (0-0.5 mm) Bar
Inclined Surface Cracked Uneven
damaged
thickness
Point down 2. To remove burrs
Clamp handle Red arrow mark 3. To flare
Copper pipe
When properly flared, the internal surface of the flare will evenly shine and be of even thickness. Since the flare part comes into contact with the connections, carefully check the flare finish.
45
12.3 Outdoor Unit
12.3.1 Install the Outdoor Unit
After selecting the best location, start installation according to indoor/outdoor unit installation diagram. 1 Fix the unit on concrete or rigid frame firmly and horizontally by bolt nut ø13/32" (ø10 mm). 2 When installing at roof, please consider strong wind and earthquake. Please fasten the installation stand firmly with bolt or nails.
A
B
Model
E18RKUA, E24RKUA
A
24-1/8" (613 mm)
B
5 5/32" (131 mm)
C
D
5/8"
14 3/16"
(16 mm) (360.5 mm)
C D
12.3.2 Connect the Piping
12.3.2.1 Connecting the piping to indoor
Please make flare after inserting flare nut (locate at joint portion, of tube assembly) onto the copper pipe. (In case of using long piping)
Connect the piping Align the center of piping and sufficiently tighten
the flare nut with fingers. Further tighten the flare nut with torque wrench in
specified torque as stated in the table.
12.3.2.2 Connecting the piping to outdoor
Decide piping length and then cut by using pipe cutter. Remove burrs from cut edge. Make flare after inserting the flare nut (locate at valve) onto the copper pipe. Align center of piping to valves and then tighten with torque wrench to the specified torque as stated in the table.
Do not over tighten, over tightening may cause gas leakage.
Piping size
Torque
1/4" (6.35 mm)
13.3 Ibf.ft [18 N·m (1.8 kgf·m)]
3/8" (9.52 mm)
31.0 Ibf.ft [42 N·m (4.3 kgf·m)]
1/2" (12.7 mm)
40.6 Ibf.ft [55 N·m (5.6 kgf·m)]
5/8" (15.88 mm)
47.9 Ibf.ft [65 N·m (6.6 kgf·m)]
3/4" (19.05 mm)
73.8 Ibf.ft [100 N·m (10.2 kgf·m)]
Spanner or Wrench
Torque wrench
46
12.3.2.3 Connecting the piping to outdoor multi
Decide piping length and then cut by using pipe cutter. Remove burrs from cut edge. Make flare after inserting the flare nut (locate at valve) onto the copper pipe. Align center of piping to valve and then tighten with torque wrench to the specified torque as stated in the table.
Male side
Hall Union
(Auxiliary pipe)
Wrench (Adjustable Wrench)
Hall Union
Male side
(Auxiliary pipe)
Female side
Flare Nut (Connection pipe)
Applicable to Liquid side of CS-E18RKUA CS-E24RKUA
Packing
Torque Wrench for Flare Nut
Pipe Size Reducer
Flare Nut
Female side
(Connection pipe)
Wrench (Adjustable Wrench)
Torque Wrench for Flare Nut and Pipe Size Reducer
Applicable to Gas side of CS-E18RKUA CS-E24RKUA
12.3.2.4 Gas Leak Checking
Pressure test to system to 400 PSIG with dry nitrogen, in stages. Thoroughly leak check the system. If the pressure holds, release the nitrogen and proceed to section 12.3.3.
12.3.3 Evacuation of the equipment
Vacuum pump
Indoor unit
Liquid side Two-way valve Outdoor unit
Gas side
Close
Three-way valve Close
1. Connect a charging hose with a push pin to the Low side of a charging set and the service port of the 3-way valve.
2. Connect the micron gauge between vacuum pump and service port of outdoor units. 3. Turn on the power switch of the vacuum pump and make sure that connect digital micron gauge and to pull
down to a value of 500 microns. 4. To make sure micron gauge a value 500 microns and close the low side valve of the charging set and turn off
the vacuum pump. 5. Disconnect the vacuum pump house from the service port of the 3-way valve. 6. Tighten the service port caps of the 3-way valve at a torque of 13.3 Ibf·ft (18 N·m) with a torque wrench. 7. Remove the valve caps of both of the 2-way valve and 3-way valve. Position both of the valves to "Open"
using a hexagonal wrench (5/32" (4 mm)). 8. Mount valve caps onto the 2-way valve and the 3-way valve.
o Be sure to check for gas leakage.
· If micron gauge value does not descend 500 microns, take the following measures:
- If the leak stops when the piping connections are tightened further, continue working from step 3.
- If the leak does not stop when the connections are retightened, repair location of leak.
- Do not release refrigerant during piping work for installation and reinstallation.
- Be careful with the liquid refrigerant, it may cause frostbite.
47
12.3.3.1 Connect the Cable to the Outdoor Unit
1. Remove control board cover (Resin and Metal). 2. Remove particular plate. 3. Remove plugs. 4. Fix the conduit connectors to the knockout holes with lock-nuts, then secure them against the side panel. 5. All wires pass through conduits & particular plate's opening hole. 6. Connecting wire between indoor unit and outdoor unit should be UL listed or CSA approved 4 conductor
wires minimum AWG16 in accordance with local electric codes. 7. Wire connection to the power supply (208/230V 60Hz) through circuit breaker.
o Connect the UL listed or CSA approved wires minimum AWG12 to the terminal board, and connect the other end of the wires to ELCB / GFCI.
8. Connect the power supply cord and connecting wire between indoor unit and outdoor unit according to the diagram below.
Indoor Unit Terminal 1 2 3
208/230V min AWG16 208/230V min AWG16 208/230V min AWG16
Grounding wire min AWG16
* Ensure all connecting wire between indoor unit and outdoor unit and power supply cord are installed in individual conduit.
Outdoor Unit
Terminal 1 2 3 Disconnect Switch Field supply
L1 L2
Grounding wire
Power Supply Single Phase 208/230V 60Hz min AWG12
9. Secure the wire onto the control board with the holder (clamper). 10. After completing wiring connections, reattach the control board cover (Metal and Resin) and the top panel to
the original position with the screws. 11. For wire stripping and connection requirement, refer to instruction 12.2.5 of indoor unit.
WARNING
This equipment must be properly earthed.
Earth lead wire shall be Yellow/Green (Y/G) in colour and longer than other lead wires for electrical safety in case of the slipping.
Front Panel
Particular Plate
Lock Nuts
Connecting Wires
Control Board Cover (Metal) Control Board
Cover (Resin)
Terminal Board
Earth wire longer than others AC wires for safety reason
Holder
Terminal Board
Earth wire longer than others AC wires for safety reason
Holder
Knockout Holes
Plugs Connectors
Particular Plate's opening holes
Power supply cord
Indoor & outdoor connection
cable
12.3.3.2 Piping Insulation
1. Please carry out insulation at pipe connection portion as mentioned in Indoor/Outdoor Unit Installation Diagram. Please wrap the insulated piping end to prevent water from going inside the piping.
2. If drain hose or connecting piping is in the room (where dew may form), please increase the insulation by using POLY-E FOAM with thickness 1/4" (6 mm) or above.
48
13. Operation Control
13.1 Basic Function
Inverter control, which equipped with a microcomputer in determining the most suitable operation mode as time passes, automatically adjusts output power for maximum comfort always. In order to achieve the suitable operation mode, the microcomputer maintains the set temperature by measuring the temperature of the environment and performing temperature shifting. The compressor at outdoor unit is operating following the frequency instructed by the microcomputer at indoor unit that judging the condition according to internal setting temperature and intake air temperature.
13.1.1 Internal Setting Temperature
Once the operation starts, remote control setting temperature will be taken as base value for temperature shifting processes. These shifting processes are depending on the air conditioner settings and the operation environment. The final shifted value will be used as internal setting temperature and it is updated continuously whenever the electrical power is supplied to the unit.
Remote Control Setting Temperature 60.8°F - 86°F
Auto Operation Mode Shifting
Indoor Air Temperature Shifting
Outdoor Air Temperature Shifting
Powerful Mode Shifting
Setting Temperature Limit Checking (Min: 60.8°F; Max 91.4°F)
Internal Setting Temperature
13.1.2 Cooling Operation 13.1.2.1 Thermostat control
Compressor is OFF when intake Air Temperature - Internal Setting Temperature < 2.7°F. Compressor is ON after waiting for 3 minutes, if the Intake Temperature - Internal Setting Temperature >
Compressor OFF point.
13.1.3 Soft Dry Operation 13.1.3.1 Thermostat control
Compressor is OFF when Intake Temperature - Internal Setting Temperature < -3.6°F. Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature >
Compressor OFF point.
13.1.4 Heating Operation 13.1.4.1 Thermostat control
Compressor is OFF when Intake Temperature - Internal Setting Temperature > 3.6°F. Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature <
Compressor OFF point
49
13.1.4.2 Automatic Operation (For Single Split Connection Only)
This mode can be set using remote control and the operation is decided by remote control setting temperature, remote control operation mode and indoor intake air temperature.
During operation mode judgment, indoor fan motor (with speed of Lo-) is running for 30 seconds to detect the indoor intake air temperature.
Every 10 minutes, the indoor temperature is judged. For the 1st judgment
o If indoor intake temperature - remote control setting temperature 3.6°F, COOL mode is decided. o If -3.6°F indoor intake temperature - remote control setting temperature < 3.6°F, DRY mode is decided. o If indoor intake temperature - remote control setting temperature < -3.6°F , HEAT mode is decided.
Heat
Dry
Cool
-10.8 -9.0 -7.2 -5.4 -3.6 -1.8 0 1.8 3.6 5.4 7.2 9.0 10.8
For the 2nd judgment onwards o If indoor intake temperature - remote control setting temperature 5.4°F, if previous operate in DRY mode, then continue in DRY mode. otherwise COOL mode is decided. o If -3.6°F indoor intake temperature - remote control setting temperature < 5.4°F, maintain with previous mode. o If indoor intake temperature - remote control setting temperature < -3.6°F, HEAT mode is decided.
Heat
Maintain current mode
Cool /Dry
-10.8 -9.0 -7.2 -5.4 -3.6 -1.8 0 1.8 3.6 5.4 7.2 9.0 10.8
13.2 Indoor Fan Speed Control
Indoor Fan Speed can be set using remote control.
13.2.1 Fan Speed Rotation Chart
Mode COOL
Fan Tap SHi Hi Me+ Me MeLo LoSLo SSLo
Mode HEAT
Fan Tap SSHi SHi Me+ Me MeLo LoSLo SSLo
Application Pwr Me+ Fc, RC RC RC RC Fcmin, RC QuietLo Dry Auto Cut
Application Pwr Me+ Fh, RC RC RC RC Fhmin, RC QuietLo
Thermo Off, Hot start Thermo Off
E9RKUAW rpm 1210 1120 1010 910 810 710 610 550 540
E12RKUAW rpm 1350 1230 1110 1000 890 780 620 560 550
E18RKUAW rpm 1480 1380 1300 1220 1140 1060 970 690 580
E24RKUAW rpm 1500 1400 1320 1240 1160 1090 1000 690 580
E9RKUAW rpm 1340 1250 1140 1040 930 830 730 570 560
E12RKUAW rpm 1450 1380 1290 1210 1120 1040 940 570 560
E18RKUAW rpm 1500 1410 1330 1260 1190 1120 1030 430 330
E24RKUAW rpm 1600 1500 1430 1360 1290 1220 1110 430 330
50
13.3 Indoor Fan Motor Operation
13.3.1 Basic Rotation Speed (rpm)
Manual Fan Speed [Cooling, Dry] o Fan motor's number of rotation is determined according to remote control setting.
Remote control
Tab
Hi
Me+
Me
Me-
Lo
[Heating] o Fan motor's number of rotation is determined according to remote control setting.
Remote control
Tab
Shi
Me+
Me
Me-
Lo
Auto Fan Speed [Cooling, Dry] o According to room temperature and setting temperature, indoor fan speed is determined automatically. o The indoor fan will operate according to pattern below.
Fan
[1 pattern : 10 s]
Speed
Higher
a
b
c
d
e
f
g
h
a
b
Medium
Lower
o During operation, indoor fan motor may stop due to odor prevention.
[Heating] o According to indoor pipe temperature, automatic heating fan speed is determined as follows.
102.2oF
RPM Increased RPM Maintain
RPM Reduced
95oC
66.2oF
OFF
60.8oF
Indoor Pipe Temp.
Feedback control o Immediately after the fan motor started, feedback control is performed once every second. o During fan motor on, if fan motor feedback 2550 rpm or < 50 rpm continue for 10 seconds, then fan motor error counter increase, fan motor is then stop and restart. If the fan motor counter becomes 7 times, then H19 - fan motor error is detected. Operation stops and cannot on back.
13.4 Outdoor Fan Motor Operation
Outdoor fan motor is operated with fan speed number of rotation. It starts when compressor starts operation and it stops 30 seconds after compressor stops operation.
ON Compressor
ON OFF
ON
Fan Speed
ON
Outdoor Fan
30 sec
OFF
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13.5 Airflow Direction
There are two types of airflow, vertical airflow (directed by horizontal vane) and horizontal airflow (directed by vertical vanes).
Control of airflow direction can be automatic (angles of direction is determined by operation mode, heat exchanger temperature and intake air temperature) and manual (angles of direction can be adjusted using remote control).
13.5.1 Vertical Airflow
13.5.1.1 CU-E9RKUA CU-E12RKUA
Operation Mode
Airflow Direction
Heating
Cooling Soft Dry
A
Auto with Heat Exchanger Temperature
B
C
Manual
Auto
Manual
Auto
Manual
13.5.1.2 CU-E18RKUA CU-E24RKUA
Vane angle (°)
1
2
3
4
5
20
57
32
20
32
45
57
68
20 ~ 45
20
26
32
37
45
20 ~ 45
20
26
32
37
45
Operation Mode
Airflow Direction
Heating
Cooling Soft Dry
A
Auto with Heat Exchanger Temperature
B
C
Manual
Auto
Manual
Auto (Anti-Dew Control)
Manual (Anti-Dew Control)
Vane angle (°)
1
2
3
4
5
20
45
32
20
32
45
57
68
20 ~ 45
20
26
32
37
45
20 ~ 45
20
26
32
37
45
Automatic vertical airflow direction can be set using remote control; the vane swings up and down within the angles as stated above. For heating mode operation, the angle of the vane depends on the indoor heat exchanger temperature as Figure 1 below. When the air conditioner is stopped using remote control, the vane will shift to close position.
Manual vertical airflow direction can be set using remote control; the angles of the vane are as stated above and the positions of the vane are as Figure 2 below. When the air conditioner is stopped using remote control, the vane will shift to close position.
C 136.4°F
B 96.8°F
A
Indoor Heat Exchanger Temperature
Figure 1
122°F 86°F
0° 1
2 3
140°
Side View
4 5
Close position
Figure 2
13.5.2 Horizontal Airflow (CU-E9RKUA CU-E12RKUA)
The horizontal airflow direction louvers can be adjusted manually by hand.
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13.5.3 Horizontal Airflow (CU-E18RKUA CU-E24RKUA)
Automatic horizontal airflow direction can be set using remote control; the vane swings left and right within the angles as stated below. For heating mode operation, the angle of the vane depends on the indoor heat exchanger temperature as Figure 1 below.
Operation Mode A
Heating with heat exchanger temperature B
Cooling and Soft Sry
Vane Angle (°) 68 ~ 112 90 68 ~ 112
109.4°F
A: swing
B: fix front
Indoor Heat Exchanger Temperature Figure 1
104.0°F
0°
Top View
1
5
2
4
3
Figure 2
Manual vertical airflow direction can be set using remote control; the angles of the vane are as stated below and the positions of the vane are as figure below:
Pattern
1
2
3
4
5
Airflow Direction Patterns at Remote Control
Vane Angle (° )
90
68
78
102
112
13.6 Quiet Operation (Cooling Mode/Cooling Area of Dry Mode)
Purpose o To provide quiet cooling operation compare to normal operation.
Control condition o Quiet operation start condition When "Quiet" button at remote control is pressed. Quiet LED illuminates. o Quiet operation stop condition When one of the following conditions is satisfied, quiet operation stops: POWERFUL/QUIET button is pressed. Stop by OFF/ON button. OFF Timer activates. POWERFUL/QUIET button is pressed again. When quiet operation is stopped, operation is shifted to normal operation with previous setting. When fan speed is changed, quiet operation is shifted to quiet operation of the new fan speed. When operation mode is changed, quiet operation is shifted to quiet operation of the new mode. During quiet operation, if ON timer activates, quiet operation maintains. After off, when on back, quiet operation is not memorised.
Control contents o Auto fan speed is change from normal setting to quiet setting of respective fan speed. This is to reduce sound of Hi, Me, Lo for 3dB. o Manual fan speed for quiet operation is -1 step from setting fan speed.
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13.7 Quiet Operation (Heating)
Purpose o To provide quiet heating operation compare to normal operation.
Control condition o Quiet operation start condition When "POWERFUL/QUIET" button at remote control is pressed. Quiet LED illuminates. o Quiet operation stop condition When one of the following conditions is satisfied, quiet operation stops: Stop by OFF/ON button. Timer "off" activates. POWERFUL/QUIET button is pressed again. When quiet operation is stopped, operation is shifted to normal operation with previous setting. When fan speed is changed, quiet operation is shifted to quiet operation of the new fan speed. When operation mode is changed, quiet operation is shifted to quiet operation of the new mode. During quiet operation, if timer "on" activates, quiet operation maintains. After off, when on back, quiet operation is not memorised.
Control contents o Fan speed auto Indoor FM RPM depends on pipe temperature sensor of indoor heat exchanger. Auto fan speed is changed from normal setting to quiet setting of respective fan speed. This is to reduce sound of Hi, Me, Lo for 3dB. o Fan speed manual Manual fan speed for quiet operation is -1 step from setting fan speed.
13.8 Powerful Mode Operation
When the powerful mode is selected, the internal setting temperature will shift lower up to 3.6°F (for Cooling/Soft Dry) or higher up to 6.3°F (for Heating) than remote control setting temperature for 20 minutes to achieve the setting temperature quickly.
13.9 Timer Control
13.9.1 ON Timer Control
ON Timer can be set using remote control, where the unit with timer set will start operation earlier than the setting time. This is to provide a comfortable environment when reaching the set ON time.
60 minutes before the set ON time, indoor (at fan speed of Lo-) and outdoor fan motor start operation for 30 seconds to determine the indoor intake air temperature and outdoor air temperature in order to judge the operation starting time.
From the above judgment, the decided operation will start operation earlier than the set time as shown below.
Indoor intake air temperature (oF)
86
15 min
10 min
77 5 min
86
95 (oF)
Outdoor air temperature (oF)
Indoor intake air temperature (oF)
59
25 min
30 min
41 35 min
32
41 (oF)
Outdoor air temperature (oF)
Cooling/Soft Dry
Heating
13.9.2 OFF Timer Control
OFF Timer can be set using remote control, the unit with timer set will stop at set time.
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13.10 Auto Restart Control
When the power supply is cut off during the operation of air conditioner, the compressor will re-operate within three to four minutes (there are 10 patterns between 2 minutes 58 seconds and 3 minutes 52 seconds to be selected randomly) after power supply resumes.
This type of control is not applicable during ON/OFF Timer setting.
13.11 Indication Panel
LED Color Light ON Light OFF
POWER Green Operation ON Operation OFF
TIMER
QUIET
POWERFUL
Orange
Orange
Orange
Timer Setting ON Quiet Mode ON Powerful Mode ON
Timer Setting OFF Quiet Mode OFF Powerful Mode OFF
AUTO COMFORT Green
Auto Comfort ON Auto Comfort OFF
ECONAVI Green
Econavi Mode ON Econavi Mode OFF
Note: If POWER LED is blinking, the possible operation of the unit are Hot Start, during Deice operation, operation
mode judgment, or ON timer sampling. If Timer LED is blinking, there is an abnormality operation occurs.
13.12 ECONAVI and AUTO COMFORT Operation
A Pyoelectric infrared sensor is used to detect injection strength variation of infrared at setting area to determine the presence or absence of human and its activity level. Human detection area is shown in figure below:
Top View
90° 2m
Angle of detection
7m
Area of detection
ECONAVI and AUTO COMFORT operation Human presence/absence detection outlined flow Process infrared sensor output signal Human detection (movement) every 3 seconds. Human detection records Records human detection (movement) result for 30 seconds and determine its activity level i.e. Hi/Lo. Presence / absence detection Compares current and previous human detection result every 30 seconds to determine the presence or absence of human. Presence / absence determination Based on human presence / absence detection, if human presence detection showed within 30 minutes, it is recognised that human is present. If human absence detection showed continuously for more than 30 minutes, it is recognised that no human is present.
ECONAVI and AUTO COMFORT Sensor abnormality detection 1. Connector pulled out (disconnected), Wire cut Abnormality (Fix Output at Hi) a. Abnormal judgment start condition. Start from ECONAVI and AUTO COMFORT Sensor power ON, and end after 30 seconds. b. Control content. Judge ECONAVI and AUTO COMFORT Sensor power level every 100ms. c. Abnormal Judgment condition. When ECONAVI and AUTO COMFORT Sensor has continues for 25 seconds Hi level.
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2. Circuit Abnormal (Fix Output Lo) a. Abnormal judgment start condition. After ECONAVI and AUTO COMFORT Sensor unit power ON, and after pressed 70 seconds. b. Control content. Judge ECONAVI and AUTO COMFORT Sensor power level every 100ms. c. Abnormal Judgment condition. When ECONAVI and AUTO COMFORT Sensor has continues at Lo level for 25 seconds.
3. Abnormal treatment Any one of the above self-diagnosis result is abnormal Abnormal counter +1 and ECONAVI and AUTO COMFORT Sensor power supply OFF. After ECONAVI and AUTO COMFORT Sensor unit power is OFF for 5 seconds, Retry the ECONAVI and AUTO COMFORT operation. When Abnormal counter reach 4 counts, ECONAVI and AUTO COMFORT sensor abnormality is confirmed. (Abnormal counter is cleared when sensor power ON and maintain normal for 120 seconds and above or Clear Abnormal counter by power reset) Save ECONAVI and AUTO COMFORT Sensor Abnormality H59 (no Timer LED blinking). ECONAVI & AUTO COMFORT Sensor operation OFF, but ECONAVI and AUTO COMFORT LED maintain ON. The unit still operate as normal. Sensor error counter can be cleared only after power supply reset or AC Reset button on the remote control is pressed.
ECONAVI and AUTO COMFORT Demo Mode To enable ECO DEMO mode, during unit is OFF (power standby):
Remote control normal mode
Press continously for 5s
SET
SET
Transmit ECO demo code and after 30 seconds return to normal mode.
TEM P
TEM P SET
Transmit sunlight sensor check code and after 30 seconds return to normal mode.
TEM P
TEM P SET
Transmit check code and after 30 seconds return to normal mode.
To disable ECO Demo MODE: Transmit ECO Demo signal again.
Control details: During ECONAVI and AUTO COMFORT Demo mode, operation LED ON and horizontal vane will set to Auto
Swing. When Hi activity judge, Fan speed change to Hi Fan and ECONAVI and AUTO COMFORT LED ON. When Lo activity judge, Fan speed change to Lo Fan and ECONAVI and AUTO COMFORT LED OFF. No setting temperature adjustment.
During ECONAVI and AUTO COMFORT operation, the internal setting temperature and fan speed are adjusted in order to provide comfort and energy saving.
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ECONAVI Start condition. Press ECONAVI button.
ECONAVI Stop condition. Press ECONAVI button again. OFF Timer activates. Press OFF/ON button to turn off the air conditioner. Press AUTO OFF/ON button to turn off the air conditioner. Press POWERFUL/QUIET button.
AUTO COMFORT Start condition. Press AUTO COMFORT button.
AUTO COMFORT Stop condition. Press AUTO COMFORT button again. OFF Timer activates. Press OFF/ON button to turn off the air conditioner. Press AUTO OFF/ON button to turn off the air conditioner. Press POWERFUL/QUIET button.
ECONAVI and AUTO COMFORT operation could ON when any of the following conditions is fulfilled: During forced cooling or forced heating operation.
Power Failure ECONAVI and AUTO COMFORT operation will be resuming after recovered from power failure.
Timer Operation When unit is turn on by ON Timer and ECONAVI and AUTO COMFORT operation is ON during previous operation before OFF, ECONAVI and AUTO COMFORT operation will not be ON automatically. When unit is turn on by ON Timer and ECONAVI and AUTO COMFORT operation is OFF during previous operation before OFF, ECONAVI and AUTO COMFORT operation will not be ON automatically.
Other Information ECONAVI and AUTO COMFORT, Powerful, Quiet and Mild Dry Cooling cannot be operated at the same time. ECONAVI and AUTO COMFORT sensor initialized time is 70 seconds from power supplied to ECONAVI and AUTO COMFORT sensor, or 70 seconds from the operation start.
Setting Temperature and Fan Speed Shift Mono Sensor
ECONAVI ; Detecting human presence and activity, the unit controls room temperature to save energy.
Mode COOL/DRY
HEAT
Human Low activity Normal activity High activity
Set temperature
+2°F / +1°C
-4°F / -2°C
Absent +4°F / +2°C
-4°F / -2°C
AUTO COMFORT ; Detecting human presence and activity, the unit controls room temperature to keep human comfortable consistently.
Mode COOL/DRY HEAT
Human Low activity Normal activity
Set temperature
+2°F / +1°C +0.5°F / +0.3°C
Set Fan Speed
+1 tap*
High activity
-2°F / -1°C -4°F / -2°C +1 tap
Absent +4°F / +2°C
-4°F / -2°C
* During low activity, fan speed 1 tap up for first 15 minutes or until set temperature is reached. ** During human absence, maximum fan speed for COOL/DRY mode is medium fan.
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13.12.1 Human Activity Sensor Check Mode
To enable Human Activity sensor abnormality check mode, during ECONAVI operation ON:
Remote control normal mode
Press continously for 5s
SET
SET
Transmit ECO demo code and after 30 seconds return to normal mode.
TEMP
TEMP SET
Transmit sunlight sensor check code and after 30 seconds return to normal mode.
TEMP
TEMP SET
Transmit check code and after 30 seconds return to normal mode.
During ECONAVI is ON, when CHECK signal received, if either sensors has abnormality, the 4 times abnormality counter is ignored, ECONAVI Indicator will blink immediately and error code is memorized.
The unit could operate without ECONAVI or AUTO COMFORT. The ECONAVI indicator blinking could be cancelled by pressing ECONAVI button again. If the human activity sensor has no abnormality, the CHECK process will end and continue with normal operation.
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14. Operation Control (For Multi Split Connection)
During multi split connection, indoor unit's operation controls are same with single split connection unless specified in this chapter.
14.1 Cooling operation
14.1.1 Thermostat control
Capability supply to indoor unit is OFF (Expansion valve closed) when Intake Air Temperature -- Internal setting temperature < 28.4°F.
Capability resume supply to indoor unit after waiting for 3 minutes, if the Intake Air temperature -- Internal setting temperature > Capability supply OFF point.
14.2 Soft Dry Operation
14.2.1 Thermostat control
Capability supply to indoor unit is OFF (Expansion valve closed) when Intake Air Temperature -- Internal setting temperature < 26.6°F.
Capability resume to indoor unit after waiting for 3 minutes, if the Intake Air temperature -- Internal setting temperature > Capability supply OFF point.
14.3 Heating Operation
14.3.1 Thermostat control
Capability supply to indoor unit is OFF (Expansion valve closed) when Intake Air Temperature -- Internal setting temperature > 33.8°F.
During this condition, the indoor fan is stopped if compressor is ON. Capability resume supply to indoor unit after waiting for 3 minutes, if the Intake Air Temperature -- Internal
setting temperature < Capability supply OFF point.
14.3.2 Temperature Sampling Control
Temperature sampling is controlled by outdoor unit where room temperature for all power supply ON indoor unit could be obtained.
When capability supply to the indoor unit is OFF and the compressor is ON during heating operation, the indoor fan motor is stopped. During this condition, 15 seconds after sampling signal from outdoor unit is received, the indoor fan start operation at low fan speed.
However, within first 4 minutes of capability stopped supply to the indoor unit, even sampling signal is received, the sampling control is cancelled.
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14.4 Automatic Operation (For Multi Split Connection Only)
This mode can be set using remote control and the operation is decided by remote control setting temperature, remote control operation mode, indoor intake and outdoor air temperature.
During operation mode judgment, indoor fan motor (with speed of -Lo) and outdoor fan motor are running for 30 seconds to detect the indoor intake and outdoor air temperature. The operation mode is decided based on below chart.
Indoor intake air temperature (F)
96.8
T1
T2 T3
Heating Mode Soft Dry Mode Cooling Mode
Remote Control setting temperature
60.8 55.4
66.2 69.8 73.4 77
Outdoor air temperature (F)
Every 180 minutes, the indoor and outdoor temperature is judge. Based on remote control setting temperature, the value of T1 will increase up to 50°F, T2 will decrease by 37.4°F and T3 will decrease up to 46.4°F.
14.5 Indoor Fan Motor Operation
14.5.1 Residual Heat Removal Control
To prevent high pressure at indoor unit, when heating mode thermostat-off condition or power supply OFF, indoor fan continue to operate at controlled fan speed for maximum 30 seconds then stop.
14.6 Powerful Mode Operation
When the power mode is selected, the internal setting temperature will shift lower up to 39.2F for Cooling/Soft Dry or higher up to 42.8°F for heating than remote control setting temperature, the powerful operation continue until user cancel the Powerful operation by pressing powerful button again.
14.7 Auto restart control
When the power supply is cut off during the operation of air conditioner, the compressor will re-operate between three to four minutes (10 patterns to be selected randomly) after power resume.
During multi split connection, Indoor unit will resume previous mode, include unit standby mode.
14.8 Indication Panel
LED Color Light ON Light OFF
POWER Green Operation ON Operation OFF
TIMER
QUIET
POWERFUL
AUTO COMFORT
Orange
Orange
Orange
Green
Timer Setting ON Quiet Mode ON Powerful Mode ON Auto Comfort ON
Timer Setting OFF Quiet Mode OFF Powerful Mode OFF Auto Comfort OFF
ECONAVI Green
Econavi Mode ON Econavi Mode OFF
Note:
If POWER LED is blinking (0.5 second ON, 0.5 second OFF), the possible operation of the unit are during Indoor Residual Heat Removal, Hot Start, during Deice operation, operation mode judgment, or ON timer sampling.
If POWER LED is blinking (2.5 seconds ON, 0.5 second OFF), the unit is in standby mode. If TIMER LED is blinking, there is an abnormality operation occurs.
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15. Protection Control (E9RK and E12RK)
15.1 Protection Control For All Operations
15.1.1 Restart Control (Time Delay Safety Control)
The compressor will not turn on within 3 minutes from the moment operation stops, although the unit is turned on again by pressing OFF/ON button at remote control within this period.
This control is not applicable if the power supply is cut off and on again. This phenomenon is to balance the pressure inside the refrigerant cycle.
15.1.2 30 Seconds Forced Operation
Once the air conditioner is turned on, the compressor will not stop within 30 seconds in a normal operation although the intake air temperature has reached the thermo-off temperature. However, force stop by pressing the OFF/ON button at the remote control is permitted or the Auto OFF/ON button at indoor unit.
The reason for the compressor to force operation for minimum 30 seconds is to allow the refrigerant oil run in a full cycle and return back to the outdoor unit.
15.1.3 Total Running Current Control
When the outdoor unit total running current (AC) exceeds X value, the frequency instructed for compressor operation will be decreased.
If the running current does not exceed X value for 5 seconds, the frequency instructed will be increased. However, if total outdoor unit running current exceeds Y value, compressor will be stopped immediately for
3 minutes.
Model
A
Cool (X)
B
C
Heat (X)
Y
E9RKUA 3.89 A 3.28 A 3.28 A 5.27 A 15.01 A
E12RKUA 6.55 A 6.10 A 6.10 A 7.05 A 15.01 A
1. The first 30 minutes of cooling operation, (A) will be applied.
109.4°F
C 107.6°F
102.2°F
B
100.4°F A
Outdoor Intake temperature Outdoor Intake temperature
15.1.4 IPM (Power Transistor) Prevention Control
Overheating Prevention Control o When the IPM temperature rises to 212°F, compressor operation will stop immediately. o Compressor operation restarts after 3 minutes the temperature decreases to 203°F. o If this condition repeats continuously 4 times within 20 minutes, timer LED will be blinking ("F96" is indicated).
DC Peak Current Control o When electric current to IPM exceeds set value of 18.5A, the compressor will stop operate. Then, operation will restart after 3 minutes. o If the set value exceeds again more than 30 seconds after the compressor starts, the operation will restart after 2 minutes. o If the set value exceeds again within 30 seconds after the compressor starts, the operation will restart after 1 minute. If this condition repeats continuously for 7 times, all indoor and outdoor relays will be cut off, timer LED will be blinking ("F99" is indicated).
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15.1.5 Compressor Overheating Prevention Control
Instructed frequency for compressor operation will be regulated by compressor discharge temperature. The changes of frequency are as below.
If compressor discharge temperature exceeds 224.6°F, compressor will be stopped, occurs 4 times per 20 minutes, timer LED will be blinking. ("F97" is indicated.)
224.6oF 217.4oF
212oF
Compressor = OFF
Compressor Frequency Reduce
Compressor Frequency Maintain
Free
197.6oF 195.8oF 194oF
Comp. Discharge temperature
15.1.6 Low Pressure Prevention Control (Gas Leakage Detection)
Control start conditions o For 5 minutes, the compressor continuously operates and outdoor total current is between 0.64A and 0.85A. o During Cooling and Soft Dry operations: Indoor suction temperature - indoor piping temperature is below 7.2.°F. o During Heating operations: Indoor piping temperature - indoor suction is under 9°F.
Control contents o Compressor stops (and restart after 3 minutes). o If the conditions above happen 2 times within 20 minutes, the unit will: Stop operation Timer LED blinks and "F91" indicated.
15.1.7 Low Frequency Protection Control 1
When the compressor operates at frequency lower than 24Hz continued for 240 minutes, the operation frequency will be changed to 25Hz for 2 minutes.
15.1.8 Low Frequency Protection Control 2
When all below conditions comply, minimum limit of compressor will be set.
Temperature, T, for: Indoor intake air (°F) Outdoor air (°F) Indoor heat exchanger (°F)
Cooling / Soft Dry T < 57.2 or T 86 T < 55.4 or T 100.4
T < 86
Heating -
T < 57.2 or T 82.4 T 32
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15.2 Protection Control For Cooling & Soft Dry Operation
15.2.1 Outdoor Air Temperature Control
The maximum current value is regulated when the outdoor air temperature rise above 57.2°F in order to avoid compressor overloading.
101.3°F
Compressor ON Compressor OFF
99.5°F
Outdoor Air Temperature
The compressor will be stopped at outdoor air temperature -4°F. The unit still operate within the temperature range.
-0.4°F
Compressor ON -4°F
Compressor OFF
Outdoor Air Temperature
15.2.2 Cooling Overload Control
Pipe temperature limitation / restriction. o Detects the outdoor pipe temperature and carry out restriction / limitation below (Limit the compressor operation frequency) o The compressor stops if outdoor pipe temperature exceeds 141.8°F. o If the compressor stops 4 times in 20 minutes, Timer LED blinks ("F95" indicated: Outdoor high pressure rise protection)
15.2.3 Freeze Prevention Control 1
When indoor heat exchanger temperature is lower than 32°F continuously for 6 minutes, compressor will stops operation.
Compressor will resume its operation 3 minutes after the indoor heat exchanger is higher than 41°F. At the same time, indoor fan speed will be higher than during its normal operation. If the indoor heat exchanger temperature is higher than 55.4°F for 5 minutes, the fan speed will return to its
normal operation.
15.2.4 Freeze Prevention Control 2
Control start conditions o During Cooling operation and soft dry operation During thermo OFF condition, indoor intake temperature is less than 50°F or Compressor stops for freeze prevention control o Either one of the conditions above occurs 5 times in 60 minutes.
Control contents o Operation stops o Timer LED blinks and "H99" indicated
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15.2.5 Dew Prevention Control 1
To prevent dew formation at indoor unit discharge area. This control will be activated if:
o Outdoor air temperature and Indoor pipe temperature judgment by microcontroller is fulfilled. o When Cooling or Dry mode is operated more than 20 minutes or more. This control stopped if: o Compressor stopped. o Remote control setting changed (fan speed / temperature). o Outdoor air temperature and indoor intake temperature changed. Fan speed, angle of louver (vertical airflow angle) will be adjusted accordingly in this control.
1. Fan speed will be increased slowly when control is activated until predetermine value. Compressor frequency will be regulated accordingly.
15.2.6 Protection Control For Heating Operation
15.2.6.1 Intake Air Temperature Control
Compressor will operate at limited freq., if indoor intake air temperature is 86°F or above.
15.2.6.2 Outdoor Air Temperature Control
The maximum current value is regulated when the outdoor air temperature rise above 57.2°F in order to avoid compressor overloading.
57.2°F
Current Regulated Free withing maximum limit
52.6°F
Outdoor Air Temperature
The compressor will be stopped at outdoor air temperature -4°F. The unit still operate within the temperature range.
-0.4°F
Compressor ON -4°F
Compressor OFF
Outdoor Air Temperature
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15.2.6.3 Overload Protection Control
The compressor operating frequency is regulated in accordance to indoor heat exchanger temperature as shown below.
If the heat exchanger temperature exceeds 140.0°F, compressor will stop.
140°F 131°F
OFF Frequency Reduced
Frequency Limited
120.2°F
Free
Indoor Heat Exchanger Temp.
Frequency Limited
114.8°F
15.2.6.4 Low Temperature Compressor Oil Return Control
In heating operation, if the outdoor temperature falls below 14°F when compressor starts, the compressor frequency will be regulated up to 600 seconds.
15.2.6.5 Cold Draught Prevention Control
When indoor pipe temperature is low, cold draught operation starts where indoor fan speed will be reduced or stop.
Horizontal vane angle may be adjusted in Auto vane setting.
15.2.6.6 Deice Operation
When outdoor pipe temperature and outdoor air temperature is low, deice operation start where indoor fan motor and outdoor fan motor stop and operation LED blinks. Horizontal vane is closed during auto vane setting.
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16. Protection Control (E18RK and E24RK)
16.1 Protection Control For All Operations
16.1.1 Restart Control (Time Delay Safety Control)
The compressor will not turn on within 3 minutes from the moment operation stops, although the unit is turned on again by pressing OFF/ON button at remote control within this period.
This control is not applicable if the power supply is cut off and on again. This phenomenon is to balance the pressure inside the refrigerant cycle.
16.1.2 30 Seconds Forced Operation
Once the air conditioner is turned on, the compressor will not stop within 30 seconds in a normal operation although the intake air temperature has reached the thermo-off temperature. However, force stop by pressing the OFF/ON button at the remote control is permitted or the Auto OFF/ON button at indoor unit.
The reason for the compressor to force operation for minimum 30 seconds is to allow the refrigerant oil run in a full cycle and return back to the outdoor unit.
16.1.3 Total Running Current Control
When the outdoor unit total running current (AC) exceeds X value, the frequency instructed for compressor operation will be decreased.
If the running current does not exceed X value for 5 seconds, the frequency instructed will be increased. However, if total outdoor unit running current exceeds Y value, compressor will be stopped immediately for
3 minutes.
Model
A
Cool (X)
B
C
Heat (X)
Y
E18RKUA 10.85 A 9.84 A 9.84 A 11.29 A 19.30 A
E24RKUA 12.47 A 11.46 A 10.16 A 13.80 A 19.30 A
1. The first 30 minutes of cooling operation, (A) will be applied.
109.4°F
C 107.6°F
102.2°F
B
100.4°F A
Outdoor Intake temperature Outdoor Intake temperature
16.1.4 IPM (Power Transistor) Prevention Control
Overheating Prevention Control o When the IPM temperature rises to 212°F, compressor operation will stop immediately. o Compressor operation restarts after 3 minutes the temperature decreases to 203°F.
DC Peak Current Control o When electric current to IPM exceeds set value of 29.9A, the compressor will stop operate. Then, operation will restart after 3 minutes. o If the set value is exceeded again more than 30 seconds after the compressor starts, the operation will restart after 2 minute. o If the set value is exceeded again within 30 seconds after the compressor starts, the operation will restart after 1 minute. If this condition repeats continuously for 7 times, all indoor and outdoor relays will be cut off. Timer LED will be blinking (F99 is indicated).
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16.1.5 Compressor Overheating Prevention Control
Instructed frequency for compressor operation will be regulated by compressor discharge temperature. The changes of frequency are as below.
If compressor discharge temperature exceeds 233.6°F, compressor will be stopped, occurs 4 times per 20 minutes, timer LED will be blinking. "F97" is indicated.
233.6°F 230.0°F
Compressor = OFF
Compressor Frequency Reduced
206.6°F
212.0°F
Compressor Frequency Maintain
204.8°F
Free Comp Discharge temperature
194.0°F
16.1.6 Low Pressure Protection Control (Gas Leakage Detection)
For 5 minutes, the compressor continuously operates and outdoor total current is between 0.78A and 1.16A. During Cooling and Soft Dry operation:
Indoor suction temperature indoor piping temperature is below 39.2°F. During Heating operations :
Indoor piping temperature - indoor suction is under 41.0°F.
16.1.7 Low Frequency Protection Control 1
When the compressor operates at frequency lower than 25Hz continued for 240 minutes, the operation frequency will be changed to 24Hz for 2 minutes.
16.1.8 Low Frequency Protection Control 2
When all below conditions comply, minimum limit of compressor will be set.
Temperature, T, for: Indoor intake air (°F)
Outdoor air (°F) Indoor heat exchanger (°F)
E18RKUA, E24RKUA
Cooling / Soft Dry
Heating
T < 57.2 or T 86.0
T < 57.2 or T 82.4
T < 55.4 or T 100.4
T < 39.2 or T 75.2
T < 86.0
T 32.0
16.2 Protection Control For Cooling & Soft Dry Operation
16.2.1 Outdoor Air Temperature Control
The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the diagram below.
This control will begin 1 minute after the compressor starts. Compressor frequency will adjust based on outdoor air temperature.
77.0°F
Free Limited frequency
71.6°F
67
The compressor will be stopped at outdoor air temperature -4°F. The unit still operate within the temperature range.
-0.4°F
Compressor ON -4°F
Compressor OFF
Outdoor Air Temperature
16.2.2 Cooling Overload Control
Pipe temperature limitation / restriction. o Detects the outdoor pipe temperature and carry out restriction / limitation below (Limit the compressor operation frequency) o The compressor stops if outdoor pipe temperature exceeds 145.4°F. o If the compressor stops 4 times in 20 minutes, Timer LED blinks ("F95" indicated: Outdoor high pressure rise protection)
16.2.3 Freeze Prevention Control 1
When indoor heat exchanger temperature is lower than 32°F continuously for 6 minutes, compressor will stops operation.
Compressor will resume its operation 3 minutes after the indoor heat exchanger is higher than 41.0°F. At the same time, indoor fan speed will be higher than during its normal operation. If the indoor heat exchanger temperature is higher than 55.4°F for 5 minutes, the fan speed will return to its
normal operation.
16.2.4 Freeze Prevention Control 2
Control start conditions o During Cooling operation and soft dry operation During thermo OFF condition, indoor intake temperature is less than 50.0°F or Compressor stops for freeze prevention control o Either one of the conditions above occurs 5 times in 60 minutes.
Control contents o Operation stops o Timer LED blinks and "H99" indicated
16.2.5 Dew Prevention Control 1
To prevent dew formation at indoor unit discharge area. This control will be activated if:
o Outdoor air temperature and Indoor pipe temperature judgment by microcontroller is fulfilled. o When Cooling or Dry mode is operated more than 20 minutes or more. This control stopped if: o Compressor stopped. o Remote control setting changed (fan speed / temperature). o Outdoor air temperature and indoor intake temperature changed. Fan speed, angle of louver (vertical airflow angle) will be adjusted accordingly in this control.
1. Fan speed will be increased slowly when control is activated until predetermine value. Compressor frequency will be regulated accordingly.
16.2.6 Protection Control For Heating Operation
16.2.6.1 Intake Air Temperature Control
Compressor will operate at limited freq., if indoor intake air temperature is 86.0°F or above.
68
16.2.6.2 Outdoor Air Temperature Control
The Max current value is regulated when the outdoor air temperature rise above 57.2°F in order to avoid compressor overloading.
The compressor will be stopped at outdoor air temperature -4°F. The unit still operate within the temperature range.
-0.4°F
Compressor ON -4°F
Compressor OFF
Outdoor Air Temperature
16.2.6.3 Overload Protection Control
The compressor operating frequency is regulated in accordance to indoor heat exchanger temperature as shown below.
If the heat exchanger temperature exceeds 140.0°F, compressor will stop.
140.0°F 125.6°F 120.2°F
OFF Frequency Reduced Frequency Limited
Free
114.8°F
16.2.6.4 Low Temperature Compressor Oil Return Control
In heating operation, if the indoor temperature falls below 17.6°F when compressor starts, the compressor frequency will be regulated up to 600 seconds.
16.2.6.5 Cold Draught Prevention Control
When indoor pipe temperature is low, cold draught operation starts where indoor fan speed will be reduced or stop.
Horizontal vane angle may be adjusted in Auto vane setting.
16.2.6.6 Deice Operation
When outdoor pipe temperature and outdoor air temperature is low, deice operation start where indoor fan motor and outdoor fan motor stop and operation LED blinks. Horizontal vane is closed during auto vane setting.
69
17. Servicing Mode
17.1 Auto Off/On Button
Auto OFF/ON Button pressed
Auto OFF/ON Button pressed
Auto OFF/ON Button pressed
Auto Operation
5 sec Test Run Operation
(Forced Cooling Operation)
Beep
5 sec
Stop
Test Run Operation
(Forced Cooling Operation)
Beep x 2
Stop
1 AUTO OPERATION MODE The Auto operation will be activated immediately once the Auto OFF/ON button is pressed. This operation can be used to operate air conditioner with limited function if remote control is misplaced or malfunction.
2 TEST RUN OPERATION (FOR PUMP DOWN/SERVICING PURPOSE) The Test Run operation will be activated if the Auto OFF/ON button is pressed continuously for more than 5 seconds. A "beep" sound will heard at the fifth seconds, in order to identify the starting of Test Run operation (Forced cooling operation). Within 5 minutes after Forced cooling operation start, the Auto OFF/ON button is pressed for more than 5 seconds. A 2 "beep" sounds will heard at the fifth seconds, in order to identify the starting of Forced heating operation.
The Auto OFF/ON button may be used together with remote control to set / change the advance setting of air conditioner operation.
Auto OFF/ON button pressed
Auto Operation
Main unit always continue Test Run (forced cooling) operation
5 sec
8 sec
11 sec
16 sec
Test Run Operation
Test Run Operation
Remote Control Number
(Forced Cooling Operation) (Forced Heating Operation)
Switch Mode
Remote Control Receiving Sound OFF/ON
Beep
Beep x 2
Beep x 3
Beep x 4
Press "AC RESET"
Press "AC RESET", then any key at remote control
Press "AC RESET" at remote control
3 REMOTE CONTROL NUMBER SWITCH MODE The Remote Control Number Switch Mode will be activated if the Auto OFF/ON button is pressed continuously for more than 11 seconds (3 "beep" sounds will occur at 11th seconds to identify the Remote Control Number Switch Mode is in standby condition) and press "AC RESET" button and then press any button at remote control to transmit and store the desired transmission code to the EEPROM.
There are 4 types of remote control transmission code could be selected and stored in EEPROM of indoor unit. The indoor unit will only operate when received signal with same transmission code from remote control. This could prevent signal interference when there are 2 or more indoor units installed nearby together. To change remote control transmission code, short or open jumpers at the remote control printed circuit board.
Remote Control Printed Circuit Board
J1
Jumper A (J1)
Short
Jumper B (D2) Open
Remote Control No. A (Default)
Open
Open
B
D2
Short
Short
C
Open
Short
D
During Remote Control Number Switch Mode, press any button at remote control to transmit and store the transmission code to the EEPROM.
4 REMOTE CONTROL RECEIVING SOUND OFF/ON MODE The Remote Control Receiving Sound OFF/ON Mode will be activated if the Auto OFF/ON button is pressed continuously for more than 16 seconds (4 "beep" sounds will occur at 16th seconds to identify the Remote Control Receiving Sound OFF/ON Mode is in standby condition) and press "AC Reset" button at remote control.
70
Press Auto OFF/ON button to toggle remote control receiving sound. - Short "beep": Turn OFF remote control receiving sound. - Long "beep": Turn ON remote control receiving sound.
After Auto OFF/ON button is pressed, the 20 seconds counter for Remote Control Receiving Sound OFF/ON Mode is restarted.
17.2 Cooling Only Operation (Single connection Only, Multi connection please refer to Multi outdoor manual)
17.2.1 How to activate and deactivate Cooling Only Operation
AUTO SW is pressed
5s
8s
11s
16s
21s
26s
36s
Emergency Operation
Forced Cooling Operation
Forced Heating Operation
Cool Only Mode Enable/ Disable
Remote Control Number Switch Mode
Remote Control Receiving Sound
No Setting Mode
*Operation Forced
Time Check Cooling
Mode
Operation
Pit
PitPit
PitPitPit PitPitPitPit
Peet
No
AC reset code CHECK AC reset code AC reset code AC reset code AC reset code code
The default setting is "Cool Only" mode disable.
To enable the "Cool Only" mode, press the AUTO OFF/ON SW for more than 8s and less than 11s, "Pit Pit" sound will be heard, then release the AUTO OFF/ON SW and press remote controller CHECK button. A short "Pit" sound will be heard. "Cool Only" mode is now enable.
To disable the "Cool Only" mode, press the AUTO OFF/ON SW for more than 8s and less than 11s, "Pit Pit" sound will be heard, then release the AUTO OFF/ON SW and press remote controller CHECK button. A long "Pit" sound will be heard. "Cool Only" mode is now disable.
17.2.2 Operation mode during Cooling Only Operation
The table below shows the operation mode comparison when cooling only operation mode activated and deactivated.
Operation mode AUTO HEAT
Cooling Only Operation Mode Activated
After 30s sampling, regardless of indoor intake or outdoor intake temperature judgement, the unit will run Cooling or DRY operation.
The unit will stop and Power LED blinking.
Cooling Only Operation Mode Deactivated
After 30s sampling, the unit will judge the operation mode base on remote controller temperature setting and Indoor Intake Sensor (New Auto Mode) or Outdoor Intake Sensor (Old Auto Mode)
The unit will run Heating operation.
COOL
The unit will run Cooling operation.
The unit will run Cooling operation.
DRY
The unit will run DRY operation.
The unit will run Dry operation.
Force Heating
The unit will run Force Cooling operation.
AUTO (with Timer)
HEAT (with Timer) COOL (with Timer)
The unit will turn ON by the timer and run Auto Operation. After 30s sampling, regardless of indoor intake or outdoor intake temperature judgement, the unit will run Cooling or DRY operation.
The unit will not turn ON by the Timer. Power LED blinking.
The unit will turn ON by the Timer and run Cooling operation.
DRY (with Timer) The unit will turn ON by the Timer and run DRY operation.
** Power LED blinking = 2.5s ON, 0.5s OFF
The unit will run Force Heating operation.
The unit will turn ON by the timer and run Auto Operation. After 30s sampling, the unit will judge the operation mode base on remote controller temperature setting and Indoor Intake Sensor (New Auto Mode) or Outdoor Intake Sensor (Old Auto Mode)
The unit will turn ON by the timer and run Heating Operation.
The unit will turn ON by the timer and run Cooling Operation.
The unit will turn ON by the timer and run Cooling Dry Operation.
71
17.3 Remote Control Button
17.3.1 SET Button
To check remote control transmission code and store the transmission code to EEPROM o Press "Set" button continuously for 10 seconds by using pointer o Press "Timer Set" button unit a "beep" sound is heard as confirmation of transmission code change.
17.3.2 RESET (RC)
To clear and restore the remote control setting to factory default. o Press once to clear the memory
17.3.3 RESET (AC)
To restore the unit's setting to factory default. o Press once to restore the unit's setting
17.3.4 TIMER
To change indoor unit indicator's LED intensity: o Press continuously for 5 seconds.
17.3.5 TIMER
To change remote control display from Degree Celsius (°C) to Degree Fahrenheit (°F) o Press continuously for 10 seconds.
17.3.6 CLOCK Button
To change the remote control time format: o Press for more than 5 seconds
72
18. Troubleshooting Guide
18.1 Refrigeration Cycle System
In order to diagnose malfunctions, make sure that there are no electrical problems before inspecting the refrigeration cycle. Such problems include insufficient insulation, problem with the power source, malfunction of a compressor and a fan. The normal outlet air temperature and pressure of the refrigeration cycle depends on various conditions, the standard values for them are shown in the table on the right.
Normal Pressure and Outlet Air Temperature (Standard)
Gas Pressure
Outlet air
PSI (kg/cm2G)
Temperature (°F)
Cooling Mode
130.53 ~ 174.04 (9 ~ 12)
53.6 ~ 60.8
Heating Mode
333.58 ~ 420.60 (23 ~ 29)
96.8 ~ 113
Condition: Indoor fan speed = High Outdoor temperature 95°F at cooling mode and 44.6°F at heating mode. Compressor operate at rated frequency
Difference in the intake and outlet
air temperatures
More than 14.4°F (15 minutes after an operation is started.)
at cooling mode. Above 25.2°F (15 minutes after an operation is started.) at heating mode
Normal
Measuring the air temperature difference
Less than 14.4°F at the cooling mode. Less than 25.2°F at the cooling mode.
Value of electric current during operation
Higher than specified
Lower than specified
Dusty condenser preventing heat radiation
Excessive amount of refrigerant
Measuring electric current during operation
Gas side pressure
Cooling Mode High Low Low
Low Heating Mode
Low Low
Inefficient compressor
Insufficient refrigerant Clogged strainer or expansion valve
Inefficient compressor
Insufficient refrigerant Clogged strainer or capillary tube
Measuring gas side pressure
73
18.1.1 Relationship between the condition of the air conditioner and pressure and electric current
Cooling Mode
Heating Mode
Condition of the air conditioner
Low Pressure
High Pressure
Electric current during operating
Low Pressure
High Pressure
Electric current during operating
Insufficient refrigerant (gas leakage)
Clogged capillary tube or Strainer
Short circuit in the indoor unit
Heat radiation deficiency of the outdoor unit
Inefficient compression
Carry out the measurements of pressure, electric current, and temperature fifteen minutes after an operation is started.
74
18.2 Breakdown Self Diagnosis Function
18.2.1 Self Diagnosis Function (Three Digits Alphanumeric Code)
Once error occurred during operation, the unit will stop its operation, and Timer LED blinks. Although Timer LED goes off when power supply is turned off, if the unit is operated under a breakdown
condition, the LED will ON again. In operation after breakdown repair, the Timer LED will not blink. The last error code (abnormality) will be stored
in IC memory.
18.2.2 To Make a Diagnosis
1 Timer LED starts to blink and the unit automatically stops the operation.
2 Press the CHECK button on the remote control continuously for
5 seconds. 3 "- -" will be displayed on the remote control display.
AUTO HEAT COOL DRY FAN
FAN SPEED AIR SWING
Note: Display only for "- -" (No signal transmission, no receiving sound
and no Power LED blinking)
4 Press the TIMER or button on the remote control. The code "H00"
(no abnormality) will be displayed and signal will be transmit to the main
unit.
5 Each press of the button ( or ) will increase error code number and
transmit error code signal to the main unit.
"Check" button
6 When the latest abnormality code on the main unit and code transmitted
from the remote control are matched, Power LED will light up for
E C O N A V I OFF/ON
AUTO COMFORT
MODE
TEMP
POW ERFU QUIET
L/ F
A
N
SPEED
AIR SWING
TIMER ON 1
2 OFF
SET CHECK CLOCK
SET
3
CANCEL
AC
RC
RESET
30 seconds and a "beep" sound (continuously for 4 seconds) will be
heard. If no codes are matched, Power LED will light up for 0.5 seconds and no sound will be heard.
7 The breakdown diagnosis mode will be canceled unless pressing the CHECK button continuously for
5 seconds or operating the unit for 30 seconds.
8 The LED will be off if the unit is turned off or the RESET button on the main unit is pressed.
18.2.3 To Display Memorized Error Code (Protective Operation)
1 Turn power on. 2 Press the CHECK button on the remote control 3 "- -" will be displayed on the remote control display.
Note: Display only for "- -" (No signal transmission, no receiving sound and no Power LED blinking) 4 Press the TIMER or button on the remote control. The code "H00" (no abnormality) will be displayed
and signal will be transmit to the main unit. 5 Each press of the button ( or ) will increase error code number and transmit error code signal to the main
unit. 6 When the latest abnormality code on the main unit and code transmitted from the remote control are matched,
Power LED will light up for 30 seconds and a "beep" sound (continuously for 4 seconds) will be heard. If no codes are matched, Power LED will light up for 0.5 seconds and no sound will be heard. 7 The breakdown diagnosis mode will be canceled unless pressing the CHECK button continuously for 5 seconds or operating the unit for 30 seconds. 8 The same diagnosis can be repeated by turning power on again.
18.2.4 To Clear Memorized Error Code after Repair (Protective Operation)
1 Turn power on (in standby condition). 2 Press the AUTO button for 5 seconds (a "beep" sound is heard) on the main unit to operate the unit at
Forced Cooling Operation Mode. 3 Press the CHECK button on the remote control for about 1 second with a pointed object to transmit signal to
main unit. A "beep" sound is heard, and the Error Code is cleared.
18.2.5 Temporary Operation (Depending On Breakdown Status)
1 Press the Auto OFF/ON button on the main unit (a "beep" sound is heard) to operate the unit. (Remote control is enable again).
2 The unit can be temporarily be used until repaired.
Error Code H23
H27, H28
Operation Cooling
Cooling, Heating
Temporary items
Emergency Operation with limited power
75
18.3 Error Code Table
Diagnosis
Abnormality /
display
Protection control
Abnormality Judgement
Protection operation
Problem
Check location
H00
No memory of failure
--
Normal operation
--
--
H11
Indoor/outdoor
abnormal
communication
After operation for Indoor fan only
1 minute
operation can
start by entering
into force cooling
operation
Indoor/outdoor communication not establish
· Indoor/outdoor wire terminal · Indoor/outdoor PCB · Indoor/outdoor connection wire
H12
Indoor unit capacity
unmatched
90s after power supply
--
Total indoor capability more · Indoor/outdoor connection wire
than maximum limit or less · Indoor/outdoor PCB
than minimum limit, or
· Specification and combination
number of indoor unit less
table in catalogue
than two.
H14
Indoor intake air
temperature sensor
abnormality
Continuous for 5s
--
Indoor intake air temperature · Indoor intake air temperature
sensor open or short circuit
sensor lead wire and connector
H15
Compressor
temperature sensor
abnormality
Continuous for 5s
--
Compressor temperature
· Compressor temperature sensor
sensor open or short circuit
lead wire and connector
H16
Outdoor current
transformer (CT)
abnormality
--
--
Current transformer faulty or · Outdoor PCB faulty or
compressor faulty
compressor faulty
H19
Indoor fan motor
Continuous
--
Indoor fan motor lock or
· Fan motor lead wire and
merchanism lock
happen for 7 times
feedback abnormal
connector
· Fan motor lock or block
H23
Indoor heat exchanger Continuous for 5s
temperature sensor
abnormality
--
Indoor heat exchanger
· Indoor heat exchanger
temperature sensor open or temperature sensor lead wire and
short circuit
connector
H24
Indoor heat exchanger Continuous for 5s
temperature sensor 2
abnormality
H27
Outdoor air temperature Continuous for 5s
sensor abnormality
--
Indoor heat exchanger
· Indoor heat exchanger
temperature sensor 2 open
temperature sensor 2 lead wire
or short circuit
and connector
--
Outdoor air temperature
· Outdoor air temperature sensor
sensor open or short circuit
lead wire and connector
H28
Outdoor heat exchanger Continuous for 5s
temperature sensor 1
abnormality
--
Outdoor heat exchanger
· Outdoor heat exchanger
temperature sensor 1 open
temperature sensor 1 lead wire
or short circuit
and connector
H30
Outdoor discharge pipe Continuous for 5s
temperature sensor
abnormality
--
Outdoor discharge pipe
· Outdoor discharge pipe
temperature sensor open or temperature sensor lead wire and
short circuit
connector
H32
Outdoor heat exchanger Continuous for 5s
temperature sensor 2
abnormality
--
Outdoor heat exchanger
· Outdoor heat exchanger
temperature sensor 2 open
temperature sensor 2 lead wire
or short circuit
and connector
H33
Indoor / outdoor
misconnection
abnormality
--
--
Indoor and outdoor rated
· Indoor and outdoor units check
voltage different
H36
Outdoor gas pipe
temperature sensor
abnormality
Continuous for 5s Heating protection Outdoor gas pipe operation only temperature sensor open or short circuit
· Outdoor gas pipe temperature sensor lead wire and connector
H37
Outdoor liquid pipe
temperature sensor
abnormality
Continuous for 5s Cooling protection Outdoor liquid pipe operation only temperature sensor open or short circuit
· Outdoor liquid pipe temperature sensor lead wire and connector
H38
Indoor/Outdoor
--
mismatch (brand code)
--
Brand code not match
· Check indoor unit and outdoor
unit.
H39
Abnormal indoor
operating unit or
standby units
3 times happen within 40 minutes
--
Wrong wiring and connecting · Check the indoor/outdoor
pipe, expansion valve
connection wire and connection
abnormality, indoor heat
pipe.
exchanger sensor open circuit
· Indoor heat exchanger sensor lead wire and connector.
· Expansion valve and lead wire
and connector system.
H41
Abnormal wiring or
--
piping connection
--
Wrong wiring and
· Check indoor/outdoor
connecting pipe, expansion
connection wire and connection
valve abnormality
pipe
· Expansion valve and lead wire
and connector
76
Diagnosis
Abnormality /
display Protection control
Abnormality Judgement
Protection operation
Problem
Check location
H59
ECONAVI sensor
abnormality
Continuous for 25s
H64
Outdoor high pressure Continuous for 1
sensor abnormality
minutes
--
ECOANVI sensor open or
· ECONAVI sensor (defective or
short circuit
disconnected)
· ECONAVI PCB
--
High pressure sensor open · High pressure sensor
circuit during compressor
· Lead wire and connector
H97
Outdoor fan motor
mechanism lock
2 times happen within 30 minutes
--
Outdoor fan motor lock or
· Outdoor fan motor lead wire and
feedback abnormal
connector
· Fan motor lock or block
H98
Indoor high pressure
--
protection
--
Indoor high pressure
protection (Heating)
· Check indoor heat exchanger · Air filter dirty · Air circulation short circuit
H99
Indoor operating unit
--
freeze protection
--
Indoor freeze protection
· Check indoor heat exchanger
(Cooling)
· Air filter dirty
· Air circulation short circuit
F11
4-way valve switching 4 times happen
abnormality
within 30 minutes
--
4-way valve switching
abnormal
· 4-way valve · Lead wire and connector.
F17
Indoor standby units
3 times happen
freezing abnormality
within 40 minutes
--
Wrong wiring and connecting · Check indoor/outdoor connection
pipe, expansion valve
wire and pipe
leakage, indoor heat
· Indoor heat exchanger sensor
exchanger sensor open
lead wire and connector
circuit
· Expansion valve lead wire and
connector.
F90
Power factor correction 4 times happen
(PFC) circuit protection within 10 minutes
--
Power factor correction
· Outdoor PCB faulty
circuit abnormal
F91
Refrigeration cycle
abnormality
2 times happen within 20 minutes
--
Refrigeration cycle abnormal · Insufficient refrigerant or valve
close
F93
Compressor abnormal 4 times happen
revolution
within 20 minutes
--
Compressor abnormal
· Power transistor module faulty or
revolution
compressor lock
F94
Compressor discharge 4 times happen
overshoot protection
within 30 minutes
--
Compressor discharge
· Check refrigeration system
pressure overshoot
F95
Outdoor cooling high 4 times happen
pressure protection
within 20 minutes
--
Cooling high pressure
protection
· Check refrigeration system · Outdoor air circuit
F96
Power transistor module 4 times happen
overheating protection within 30 minutes
--
Power transistor module
· PCB faulty
overheat
· Outdoor air circuit (fan motor)
F97
Compressor
3 times happen
overheating protection within 30 minutes
--
Compressor overheat
· Insufficient refrigerant
F98
Total running current
3 times happen
protection
within 20 minutes
--
Total current protection
· Check refrigeration system
· Power source or compressor lock
F99
Outdoor direct current Continuous
--
Power transistor module
· Power transistor module faulty or
(DC) peak detection
happen for 7 times
current protection
compressor lock
Note: "" Frequency measured and fan speed fixed
The memory data of error code is erased when the power supply is cut off, or press the Auto Switch until "beep" sound heard following by pressing the CHECK button at remote control. Although operation forced to stop when abnormality detected, emergency operation is possible for certain errors (refer to Error Code Table) by using remote control or Auto OFF/ON button at indoor unit. However, the remote control signal receiving sound is changed from one "beep" to four "beep" sounds.
77
18.4 Self-diagnosis Method
18.4.1 H11 (Indoor/Outdoor Abnormal Communication)
Malfunction Decision Conditions During startup and operation of cooling and heating, the data received from outdoor unit in indoor unit signal
transmission is checked whether it is normal.
Malfunction Caused Faulty indoor unit PCB. Faulty outdoor unit PCB. Indoor unit-outdoor unit signal transmission error due to wrong wiring. Indoor unit-outdoor unit signal transmission error due to breaking of wire in the connection wires between the
indoor and outdoor units. Indoor unit-outdoor unit signal transmission error due to disturbed power supply waveform.
Troubleshooting
When abnormality indication starts again. Check the indoor-outdoor units' connection wires.
For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.
Is there any wiring error?
NO Disconnect terminal 3 wire and measure Vdc between terminal 2 & 3 from the outdoor unit.
YES
Correct the indoor-outdoor units connection wires.
Is the Vdc fluctuate between 10~70 Vdc?
NO
YES
Reconnect terminal 3 wire and measure Vdc between terminal 2 & 3 from the outdoor unit.
Replace outdoor PCB.
Is the Vdc fluctuate between 10~70Vdc?
NO
Replace indoor unit PCB.
78
18.4.2 H12 (Indoor/Outdoor Capacity Rank Mismatched)
Malfunction Decision Conditions During startup, error code appears when different types of indoor and outdoor units are interconnected.
Malfunction Caused Wrong models interconnected. Wrong indoor unit or outdoor unit PCBs mounted. Indoor unit or outdoor unit PCBs defective. Indoor-outdoor unit signal transmission error due to wrong wiring. Indoor-outdoor unit signal transmission error due to breaking of wire 3 in the connection wires between the indoor
and outdoor units.
Troubleshooting
When abnormality indication starts again.
Check the indoor and outdoor unit connection wires.
Is there any wiring error? NO
Check indoor and outdoor units model number.
YES
For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.
Correct the indoor-outdoor unit's connection wires.
Is indoor unit and outdoor unit model numbers matched?
NO
YES
Check the spare part numbers of the indoor and outdoor unit PCBs and compare with their Part Lists.
YES
Matched compatibility?
NO
Match the compatible model(s).
Change for the specified indoor or outdoor unit PCB.
Replace the indoor and outdoor unit PCBs.
79
18.4.3 H14 (Indoor Intake Air Temperature Sensor Abnormality)
Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the indoor intake air
temperature sensor are used to determine sensor errors.
Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB.
Troubleshooting
When abnormality indication starts again.
Check the connector connection: Turn off the power. Check the connector connection.
Is the connector connection normal?
YES
Check the indoor intake air temperature sensor: Plug out connector from the indoor unit PCB. Measure the resistance of the indoor intake air temperature sensor.
Is the measured resistance of the indoor intake air temperature sensor matches the value specified in its characteristic chart?
YES
Sensor (Thermistor)
70
Characteristics
60
Pipe temp. Sensor Intake Air Temp. Sensor
50
40
30
20
10
0 14 32 50 68 86 104 122 Temperature (°F)
For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.
NO
Connector poor contact.
Correct the connection.
NO
Defect in indoor intake air temperature sensor.
Replace the indoor intake air temperature sensor.
Defect in indoor unit PCB. Replace the indoor unit PCB.
Resistance (K)
80
18.4.4 H15 (Compressor Temperature Sensor Abnormality)
Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor compressor
temperature sensor are used to determine sensor errors.
Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB.
Troubleshooting
When abnormality indication starts again.
Check the connector connection: Turn off the power. Check the connector connection.
Is the connector connection normal?
YES Check the outdoor compressor temperature sensor:
Plug out connector from the outdoor unit PCB. Measure the resistance of the outdoor compressor temperature sensor.
For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.
NO
Connector poor contact.
Correct the connection.
Is the measured resistance of the outdoor compressor temperature sensor matches the value specified in its characteristic chart?
YES
Compressor Temp. Sensor (Thermistor) Charateristics
70
60
50
40
30
20
10
0 68
104 140 176 212 248 284 Temperature (°F)
NO Defect in outdoor compressor temperature sensor. Replace the outdoor compressor temperature sensor.
Defect in outdoor unit PCB. Replace the outdoor unit PCB.
Resistance (K)
81
18.4.5 H16 (Outdoor Current Transformer)
Malfunction Decision Conditions An input current, detected by Current Transformer CT, is below threshold value when the compressor is
operating at certain frequency value for 3 minutes.
Malfunction Caused Lack of gas. Broken CT (current transformer). Broken Outdoor PCB.
Troubleshooting
When abnormality indication starts again.
Refer to Service Manual Technical Graph for Temp vs Current and Pressure.
For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.
Suction pressure and running current is normal.
In forced cooling, check suction pressure versus running current.
Running current is much too low and suction pressure is much too high.
Check & replace defected CT.
Running current and suction pressure is very low.
Compressor Lack Compression. Replace Compressor.
Check for gas leaking source; Repair or replace defected part(s).
Capillary tube/expansion valve blockage; Replace defected part(s).
82
18.4.6 H19 (Indoor Fan Motor DC Motor Mechanism Locked)
Malfunction Decision Conditions The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor
(feedback of rotation > 2550rpm or < 50rpm)
Malfunction Caused Operation stops due to short circuit inside the fan motor winding. Operation stops due to breaking of wire inside the fan motor. Operation stops due to breaking of fan motor lead wires. Operation stops due to Hall IC malfunction. Operation error due to faulty indoor unit PCB.
Troubleshooting
When abnormality indication starts again.
Turn off power supply and rotate fan by hand.
Does fan rotate smoothly?
YES
Turn power supply on and operate fan.
For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.
NO Replace fan motor.
Does it rotate?
NO Turn off power supply and disconnect fan motor connector, then turn power on.
YES
Stop fan motor.
Check the rotation feedback output from fan motor.
Check the output of fan motor from indoor PCB.
Is the motor power supply voltage~325Vdc (pin 1 & 4) generated?
Rotate the fan motor by hand, is the rotation
NO
feedback voltage 15Vdc (pin 7 & 4) generated?
YES NO
NO Is the motor control voltage 15Vdc (pin 5 & 4) generated?
Operate the fan, is the rotation command voltage 1~5Vdc
NO
(pin 6 & 4) generated?
YES
Replace indoor PCB. Replace fan motor.
83
18.4.7 H23 (Indoor Pipe Temperature Sensor Abnormality)
Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the indoor heat exchanger
temperature sensor are used to determine sensor errors.
Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB.
Troubleshooting
When abnormality indication starts again.
Check the connector connection: Plug out connector from the indoor unit PCB.
Measure the resistance of the indoor pipe temperature sensor.
For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.
Is the connector connection normal?
NO
YES
Check the outdoor air temperature sensor: Plug out connector from the outdoor unit PCB. Measure the resistance of the outdoor intake air temperature sensor.
Connector poor contact. Correct the connection.
Is the measured resistance of the outdoor intake air
NO
temperature sensor matches the value specified in its
characteristic chart?
YES
Sensor (Thermistor)
70
Characteristics
60
Pipe temp. Sensor Intake Air Temp. Sensor
50
40
30
20
10
0 14 32 50 68 86 104 122 Temperature (°F)
Defect in outdoor intake air temperature sensor. Replace the outdoor intake air temperature sensor.
Defect in outdoor unit PCB. Replace the outdoor unit PCB.
Resistance (K)
84
18.4.8 H27 (Outdoor Air Temperature Sensor Abnormality)
Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor air temperature
sensor are used to determine sensor errors.
Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB.
Troubleshooting
When abnormality indication starts again.
Check the connector connection: Turn off the power. Check the connector connection.
NO Is the connector connection normal?
YES
Check the outdoor air temperature sensor: Plug out connector from the outdoor unit PCB. Measure the resistance of the outdoor air temperature sensor.
For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.
Connector poor contact. Correct the connection.
Is the measured resistance of the outdoor air temperature
NO
sensor matches the value specified in its characteristic
chart?
YES
Sensor (Thermistor)
Characteristics
70
Outdoor Air Sensor
60
Outdoor Heat Exchanger
Sensor
50
40
30
20
10
0 14 32 50 68 86 104 122 Temperature (°F)
Defect in outdoor air temperature sensor. Replace the outdoor air temperature sensor.
Defect in outdoor unit PCB. Replace the outdoor unit PCB.
Resistance (K)
85
18.4.9 H28 (Outdoor Pipe Temperature Sensor Abnormality)
Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor pipe temperature
sensor are used to determine sensor errors.
Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB.
Troubleshooting
When abnormality indication starts again.
Check the connector connection:
Turn off the power. Check the connector connection.
Is the connector connection normal?
No
YES
Check the outdoor heat exchanger temperature sensor: Plug out connector from the outdoor unit PCB. Measure the resistance of the outdoor heat exchanger temperature sensor.
Is the measured resistance of the outdoor heat exchanger temperature sensor matches the value specified in its
No
characteristic chart?
YES
For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.
Connector poor contact. Correct the connection.
Defect in outdoor heat exchanger temperature sensor. Replace the outdoor heat exchanger temperature sensor.
Defect in outdoor unit PCB. Replace the outdoor unit PCB.
Resistance (K)
Sensor (Thermistor)
Characteristics
70
Outdoor Air Sensor
60
Outdoor Heat Exchanger
Sensor
50
40
30
20
10
0 14 32 50 68 86 104 122 Temperature (°F)
86
18.4.10 H30 (Compressor Discharge Temperature Sensor Abnormality)
Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor discharge pipe
temperature sensor are used to determine sensor errors.
Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB.
Troubleshooting
When abnormality indication starts again.
Check the connector connection: Turn off the power. Check the connector connection.
Is the connector connection normal?
NO
YES
Check the outdoor discharge pipe temperature sensor: Plug out connector from the outdoor unit PCB. Measure the resistance of the outdoor discharge pipe temperature sensor.
Is the measured resistance of the outdoor discharge pipe temperature sensor matches the value specified in its
NO
characteristic chart?
YES
For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.
Connector poor contact. Correct the connection.
Defect in outdoor discharge pipe temperature sensor. Replace the outdoor discharge pipe temperature sensor.
Defect in outdoor unit PCB. Replace the outdoor unit PCB.
87
18.4.11 H32 (Outdoor Heat Exchanger Temperature Sensor 2 Abnormality)
Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor heat exchanger
temperature sensor are used to determine sensor errors.
Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB.
Troubleshooting
When abnormality indication starts again.
Check the connector connection: Turn off the power. Check the connector connection.
Is the connector connection normal?
NO
YES
Check the outdoor discharge pipe temperature sensor: Plug out connector from the outdoor unit PCB. Measure the resistance of the outdoor discharge pipe temperature sensor.
Is the measured resistance of the outdoor heat exchanger temperature sensor matches the value specified in its
NO
characteristic chart?
YES
For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.
Connector poor contact. Correct the connection.
Defect in outdoor discharge pipe temperature sensor. Replace the outdoor discharge pipe temperature sensor.
Defect in outdoor unit PCB. Replace the outdoor unit PCB.
88
18.4.12 H33 (Unspecified Voltage between Indoor and Outdoor)
Malfunction Decision Conditions The supply power is detected for its requirement by the indoor/outdoor transmission.
Malfunction Caused Wrong models interconnected. Wrong indoor unit and outdoor unit PCBs used. Indoor unit or outdoor unit PCB defective.
Troubleshooting
When abnormality indication starts again. Check indoor and outdoor units model number.
For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.
Is the indoor and outdoor unit model number matched?
NO
Match the compatible model (follow specification).
Check indoor and outdoor PCB part number and compare if YES they matched the part list.
NO
Change for the specified indoor or outdoor unit PCB.
Replace the indoor and outdoor unit PCB.
89
18.4.13 H36 (Outdoor Gas Pipe Sensor Abnormality)
Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor gas pipe
temperature sensor are used to determine sensor errors.
Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB.
Troubleshooting
When abnormality indication starts again.
Check the connector connection:
Turn off the power. Check the connector connection.
Is the connector connection normal?
NO
YES
Check the outdoor discharge pipe temperature sensor: Plug out connector from the outdoor unit PCB. Measure the resistance of the outdoor discharge pipe temperature sensor.
Is the measured resistance of the outdoor gas pipe temperature sensor matches the value specified in its
NO
characteristic chart?
YES
For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.
Connector poor contact. Correct the connection.
Defect in outdoor discharge pipe temperature sensor. Replace the outdoor discharge pipe temperature sensor.
Defect in outdoor unit PCB. Replace the outdoor unit PCB.
90
18.4.14 H37 (Outdoor Liquid Pipe Temperature Sensor Abnormality)
Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor liquid pipe
temperature sensor are used to determine sensor errors.
Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB.
Troubleshooting
When abnormality indication starts again.
Check the connector connection:
Turn off the power. Check the connector connection.
Is the connector connection normal?
NO
YES
Check the outdoor discharge pipe temperature sensor: Plug out connector from the outdoor unit PCB. Measure the resistance of the outdoor discharge pipe temperature sensor.
Is the measured resistance of the outdoor liquid pipe temperature sensor matches the value specified in its
NO
characteristic chart?
YES
For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.
Connector poor contact. Correct the connection.
Defect in outdoor discharge pipe temperature sensor. Replace the outdoor discharge pipe temperature sensor.
Defect in outdoor unit PCB. Replace the outdoor unit PCB.
91
18.4.15 H59 (Human Activity Sensor Abnormality)
Malfunction Decision Conditions Feedback signal of human activity sensor.
Malfunction Caused Feedback signal is fixed at 0 VDC or 5 VDC continuously for 25 seconds during ECONAVI or AUTO COMFORT
operation. Feedback signal is detected during ECONAVI or AUTO COMFORT off.
Troubleshooting
When abnormality indication starts again.
Check the connector connection:
Turn off the power. Check the connector connection.
Is the connector connection normal?
NO
YES
Check if the feedback signal of human activity sensor
(pin 2 and 3) is normal. When no motion, feedback is 0V.
NO
When motion detected, feedback is between 1.5VDC
to 2.5VDC.
YES
For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.
Connector poor contact. Correct the connection.
Defect in human activity sensor. Replace the human activity sensor.
Defect in outdoor unit PCB. Replace the outdoor unit PCB.
92
18.4.16 H70 (Light Sensor Abnormality)
Malfunction Decision Conditions Feedback signal of light sensor.
Malfunction Caused Feedback value is 0 VDC continuously.
Troubleshooting
When abnormality indication starts again.
Check the connector connection:
Turn off the power. Check the connector connection.
Is the connector connection normal?
NO
YES
Check if the feedback signal of sunlight sensor (pin 11 and 13)
is normal.
NO
Depends on indoor light intensity, feedback voltage
= 0.06 ~ 4.8 VDC (from dim to bright).
YES
For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.
Connector poor contact. Correct the connection.
Defect in sunlight sensor. Replace the sinlight sensor.
Defect in indoor unit PCB. Replace the indoor unit PCB.
93
18.4.17 H97 (Outdoor Fan Motor DC Motor Mechanism Locked)
Malfunction Decision Conditions The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor.
Malfunction Caused Operation stops due to short circuit inside the fan motor winding. Operation stops due to breaking of wire inside the fan motor. Operation stops due to breaking of fan motor lead wires. Operation stops due to Hall IC malfunction. Operation error due to faulty outdoor unit PCB.
Troubleshooting
When abnormality indication starts again.
Turn off power supply and rotate fan by hand.
Does fan rotate smoothly?
YES
Turn power supply on and operate fan.
For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.
NO Replace fan motor.
Does it rotate?
NO Turn off power supply and disconnect fan motor connector, then turn power on.
YES
Stop fan motor.
Check the rotation feedback output from fan motor.
Check the output of fan motor from outdoor PCB.
Is the motor power supply voltage ~325Vdc (pin 7 & 4) generated?
Is the motor control voltage 15Vdc (pin 3 & 4) generated?
Rotate the fan motor by hand, is the rotation feedback NO voltage 15 Vdc (pin 1 & 4) generated?
YES NO
NO
Operate the fan, is the rotation command voltage 1~5Vdc (pin 2 NO & 4) generated?
YES
Replace outdoor PCB. Replace fan motor.
94
18.4.18 H98 (Error Code Stored in Memory and no alarm is triggered / no TIMER LED flashing)
Malfunction Decision Conditions Indoor high pressure is detected when indoor heat exchanger is detecting very high temperature when the unit is
operating in heating operation. Phenomena: unit is stopping and re-starting very often in heating mode.
Malfunction Caused Indoor heat exchanger thermistor. Clogged air filter or heat exchanger. Over-bent pipe (liquid side).
Troubleshooting
When abnormality indication starts again. Check the indoor unit intake air filter.
For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.
YES Is the air filter dirty?
NO Check the dust accumulation on the indoor unit heat exchanger.
Clean the air filter.
Is the indoor unit heat exchanger dirty?
YES
NO
Check the indoor pipe temperature thermistor: Plug out connector (CN-TH) from the indoor unit PCB.
Measure the resistance of the indoor heat exchanger temperature thermistor.
Clean the indoor unit heat exchanger.
Is the measured resistance of the indoor pipe temperature thermistor matches the value specified in its characteristic
NO
chart?
YES
Defect in indoor pipe temperature thermistor. Replace the indoor pipe temperature thermistor.
Check the piping & installation condition. Replace piping / reinstall the unit if necessary.
95
18.4.19 H99 (Indoor Freeze Prevention Protection: Cooling or Soft Dry)
Error Code will not display (no Timer LED blinking) but store in EEPROM
Malfunction Decision Conditions Freeze prevention control takes place (when indoor pipe temperature is lower than 2°C).
Malfunction Caused Air short circuit at indoor unit. Clogged indoor unit air filter. Dust accumulation on the indoor unit heat exchanger. 2/3 way valve closed. Faulty indoor unit fan motor. Refrigerant shortage (refrigerant leakage). Clogged expansion valve or strainer. Faulty indoor pipe temperature sensor. Faulty indoor unit PCB.
Troubleshooting
When abnormality indication starts again. Check the air passage. Is there any short circuit?
YES
For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.
Provide sufficient air passage.
Check the indoor unit air filter.
Is the air filter dirty?
YES
NO
Check the dust accumulation on the indoor unit heat exchanger.
Is the indoor unit heat exchanger dirty?
YES
NO
Check if 2/3 way valve is closed?
YES
NO
Check if indoor fan motor operates normally?
NO
YES
Check for gas leakage, Is oil oozing out from the 2/3 way
YES
valve?
Check if expansion valve or strainer clogged (ice formed)?
YES
NO
Check the indoor pipe temperature sensor.
NO Does it conform to the sensor characteristic chart?
YES
Clean the air filter.
Clean the indoor unit heat exchanger. Open the 2/3 way valve. Replace the indoor unit fan motor and/or
indoor unit PCB. Repair the pipe flare or union nuts. Reclaim and recharge refrigerant. Reclaim and recharge with correct
amount of refrigerant.
Replace the indoor pipe temperature sensor.
Replace the indoor unit PCB.
96
18.4.20 F11 (4-way Valve Switching Failure)
Malfunction Decision Conditions When indoor heat exchanger is cold during heating (except deice) or when indoor heat exchanger is hot during
cooling and compressor operating, the 4-way valve is detected as malfunction.
Malfunction Caused Indoor heat exchanger (pipe) thermistor 4-way valve malfunction
Troubleshooting
When abnormality starts again.
Check the indoor pipe temperature thermistor: Plug out connector (CN-TH) from the
indoor unit PCB. Measure the resisitance of the indoor
heat exchanger temperature thermistor.
For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.
Is the measured resistance of the indoor pipe NO temperature thermistor matches the value specified in its characteristic chart?
YES
Problem occurs in heating mode only?
Defect in indoor pipe temperature thermistor.
Replace the indoor pipe temperature thermistor.
YES
NO, it happen in cooling/dry as well.
Is 4-way solenoid valve being energised? NO
YES
Outdoor PCB fault Replace
Outdoor PCB.
The 4-way valve may have been damaged or wrongly connected between discharge and suction tube.
Check connecting tubes to 4-way valve.
4-way valve not working (not energize).
Check CN-HOT connection (4-way valve connector).
4 WAYS VALVE YELLOW
YELLOW
COIL COMPLETE
1 CN-HOT (WHT) 2
No Good.
Reconnect CN-HOT (4-way valve connector).
OK Check V-coil attach to solenoid valve.
OK Check valve v-coil continuity.
OK
No Good.
Attach and screw the V-coil to solenoid valve.
No
continuity
(open).
V-coil fault
Replace
Remove CN-HOT. V-coil only.
Measure continuity
of the coil.
CN-HOT (VH3-2)
123
4 WAYS VALVE
Measure voltage supplied to CN-HOT at the start of heating.
OK (Depending on 4-way valve model).
Reverse solenoid value faulty Replace the 4-way valve.
No supply.
Outdoor PCB fault Replace Outdoor PCB.
* Check gas side pipe for hot gas flow in cooling mode
97
18.4.21 F17 (Indoor Standby Units Freezing Abnormality)
Malfunction Decision Conditions When the different between indoor intake air temperature and indoor pipe temperature is above 50°F or indoor
pipe temperature is below 30.2°F
Remark: When the indoor standby unit is freezing, the outdoor unit transfers F17 error code to the corresponding indoor unit and H39 to other indoor unit(s).
Malfunction Caused Wrong wiring connection Faulty sensor Faulty expansion valve
Troubleshooting
When F17 indication happens. Check the system wiring connection.
For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.
Is the wiring connection ok?
NO
YES
Check the indoor intake air and indoor pipe temperature sensors.
NO Does it conform to the sensor characteristic chart?
YES Check the expansion valve.
Perform Auto Wiring to correct the wiring connection.
Replace the indoor intake air or indoor pipe temperature sensor.
Is the expansion valve ok? NO
YES
Replace the solenoid coil or expansion valve.
Replace outdoor unit PCB.
98
18.4.22 F90 (Power Factor Correction Protection)
Malfunction Decision Conditions To maintain DC voltage level supply to power transistor. To detect high DC voltage level after rectification.
Malfunction Caused During startup and operation of cooling and heating, when Power Factor Correction (PFC) protection circuitry at
the outdoor unit main PCB senses abnormal DC voltage level for power transistors. When DC voltage detected is LOW, transistor switching will turn ON by controller to push-up the DC level. When DC voltage detected is HIGH (391Vdc 425Vdc), active LOW signal will send by the controller to turn OFF
relay RY-C.
Troubleshooting
When abnormality indication starts again.
Reset the error code and turn on the unit again.
Is AC power supply normal fluctuation? YES
Verify PFC abnormality by measuring DC voltage between DCP(+) and DCN(-) at the capacitor PCB.
Is the DC voltage between DCP(+) and DCN(-) normal? NO (391.2Vdc ~ 425Vdc)
Confirm the DC voltage between CN-FM 1 and 4 when compressor is running. Normal voltage range should be between 265-325Vdc.
NO
AC power supply abnormal surge.
YES (~280Vdc)
Defect in PFC circuitry. Replace the outdoor unit PCB.
Is the DC voltage between CN-FM1 and 4 of the outdoor fan motor normal?
NO
Defect in outdoor fan motor.
Replace outdoor fan motor.
Check the compressor winding resistance: Turn off the power and disconnect the harnesses U, V,
and W. Measure the winding resistance between U-V, V-W, and
W-U.
For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.
Are the compressor's winding resistance (U-V, V-W, U-W) uniform?
YES
Check the reactor impedance.
NO
Defect in compressor.
Replace compressor.
Is the impedence of the reactor low? YES
Defect in reactor. Replace reactor.
99
18.4.23 F91 (Refrigeration Cycle Abnormality)
Malfunction Decision Conditions The input current is low while the compressor is running at higher than the setting frequency.
Malfunction Caused Lack of gas. 3-way valve close.
Troubleshooting
When F91 indication happens. Check 3 way valve.
For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.
3-way valve opened? YES
Check for gas leaking source (Refer H16).
Gas leaking? NO, gas amount is OK.
Check other parts in refrigeration cycles.
NO, closed. YES
Open 3 way valve.
Check for gas leaking source; Repair or replace defected part(s). Re-claim and then re-charge the right amount.
100
18.4.24 F93 (Compressor Rotation Failure)
Malfunction Decision Conditions A compressor rotation failure is detected by checking the compressor running condition through the position
detection circuit.
Malfunction Caused Compressor terminal disconnect. Faulty Outdoor PCB. Faulty compressor.
Troubleshooting
When F93 indication happens.
Check the U, V and W connector connection: - Turn OFF the power. - Check the U, V and W connector connection at
outdoor PCB and compressor terminal.
For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.
Is the connector connection normal?
NO
YES
Disconnect the harnesses U, V and W from the compressor terminal.
Connector poor contact. Correct the connection.
From the disconnected harnesses U, V and W, correct them to the inverter checker. Turn ON the power and operate the system. Check the inverter checker 6 LEDs blinking condition.
Is the blinking of the 6 LEDs in same
NO
sequence/condition.
YES
IPM defective. Replace outdoor unit PCB.
Replace compressor.
101
18.4.25 F95 (Outdoor High Pressure Protection: Cooling or Soft Dry)
Malfunction Decision Conditions During operation of cooling or soft dry, when outdoor unit heat exchanger high temperature data is detected by
the outdoor unit heat exchanger thermistor.
Malfunction Caused Outdoor heat exchanger temperature rise due to short-circuit of hot discharge air flow. Outdoor heat exchanger temperature rise due to defective of outdoor fan motor. Outdoor heat exchanger temperature rise due to defective outdoor heat exchanger thermistor. Outdoor heat exchanger temperature rise due to defective of outdoor unit PCB.
Troubleshooting
When abnormality indication starts again.
Check the outdoor unit installation condition (during cooling or soft dry operation).
Is there any improper heat radiation?
NO
Reset the error code and turn on the unit again.
YES
Reinstall the outdoor unit. Remove the obstacle(s).
Clean the outdoor heat exchanger.
Is the outdoor fan motor operating?
NO
Measure the AC/DC voltage between pins of connector CN-FM outdoor unit
PCB.
YES
Check the outdoor heat exchanger thermistor: Turn off the power and disconnect the
connector of outdoor heat exchanger thermistor from the PCB. Measure the resistance of the outdoor heat exchanger thermistor.
Is the voltage supplied to the outdoor fan motor normal?
NO (0V) Defect in outdoor unit PCB. Replace the outdoor unit PCB.
YES (240VAC / 265~326VDC) Defect in outdoor fan motor. Replace the outdoor fan motor.
For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.
Is the measured resistance of the outdoor heat exchanger thermistor matches the value specified in its characteristic chart?
Defect in outdoor heat exchanger
NO
thermistor.
Replace the outdoor heat exchanger
thermistor.
YES
Defect in outdoor unit PCB.
Replace the outdoor unit PCB.
102
18.4.26 F96 (IPM Overheating)
Malfunction Decision Conditions During operating of cooling and heating, when IPM temperature data (212°F) is detected by the IPM temperature
sensor. Multi Models only o Compressor Overheating: During operation of cooling and heating, when the compressor OL is activated. o Heat Sink Overheating: During operation of cooling and heating, when heat sink temperature data (194°F) is
detected by the heat sink temperature sensor.
Malfunction Caused IPM overheats due to short circuit of hot discharge air flow. IPM overheats due to defective of outdoor fan motor. IPM overheats due to defective of internal circuitry of IPM. IPM overheats due to defective IPM temperature sensor.
Multi Models Only o Compressor OL connector poor contact. o Compressor OL faulty.
Troubleshooting
When F96 indication happens.
Check the outdoor unit installation condition (during cooling or soft-dry operation).
Is there any improper heat radiation? NO
Is outdoor fan motor operating? YES
YES NO
For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.
Reinstall the outdoor unit. Remove the obstacle(s). Clean the outdoor heat exchanger.
Replace the outdoor fan motor.
Defect in IPM. Replace the outdoor unit PCB.
103
18.4.27 F97 (Compress or Overheating)
Malfunction Decision Conditions During operation of cooling and heating, when compressor tank temperature data (233.6°F) is detected by the
compressor tank temperature sensor.
Malfunction Caused
Faulty compressor tank temperature sensor 2/3 way valve closed Refrigerant shortage (refrigerant leakage) Faulty outdoor unit PCB Faulty compressor
Troubleshooting
When F97 indication happens.
Check the compressor tank temperature sensor.
For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.
Does it conform to the sensor characteristic chart?
YES 2/3 way valve closed?
NO Check for gas leakage.
NO YES
Replace the compressor tank temperature sensor.
Open the 2/3 way valve.
Oil oozing out from the 2/3 way valve?
NO Check if expansion valve or strainer clogged (ice formed).
NO
Reclaim and recharge for a specified amount of refrigerant.
YES YES
Repair the pipe flare or union nuts. Reclaim and recharge refrigerant.
Replace expansion valve and/or strainer. Reclaim and recharge refrigerant.
Refrigerant cycle abnormality error again? NO
YES
Replace outdoor unit PCB. Replace outdoor unit compressor.
Procedure complete.
104
18.4.28 F98 (Input Over Current Detection)
Malfunction Decision Conditions During operation of cooling and heating, when an input over-current (X value in Total Running Current Control) is
detected by checking the input current value being detected by current transformer (CT) with the compressor running.
Malfunction Caused Excessive refrigerant. Faulty outdoor unit PCB.
Troubleshooting
When F98 indication happens.
Get restarted and measure the input current.
For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.
NO Input current > limit?
YES
Turn off power supply. Check the main circuit electrolytic capacitor.
Replace the outdoor unit PCB.
Normal? NO
Check refrigerant amount.
NO Excess refrigerant?
NO
YES YES
Repair the pipe flare or union nuts. Reclaim and recharge refrigerant.
Reclaim and recharge with correct amount of refrigerant. Replace outdoor unit PCB. Replace outdoor unit compressor.
105
18.4.29 F99 (DC Peak Detection)
Malfunction Decision Conditions During startup and operation of cooling and heating, when inverter DC peak data is received by the outdoor internal DC Peak sensing circuitry.
Malfunction Caused DC current peak due to compressor failure. DC current peak due to defective power transistor(s). DC current peak due to defective outdoor unit PCB. DC current peak due to short circuit.
Troubleshooting
When abnormality indication starts again.
Reset the error code and turn on the unit again.
Is there a sound when compressor starts?
NO (Compressor stops)
Outdoor electronic circuit defect due to power transistor short.
Replace the outdoor unit PCB.
YES Is compressor vibration even?
NO (Quite a lot of vibration at start operation)
YES
Is there no change even if all refrigerant is discharged?
NO (Normal)
YES (Stops after 2, 3 seconds of noise during operation)
Check the compressor winding resistance: Turn off the power and disconnect
the harnesses U, V and W. Measure the winding resistance
between U-V, V-W and W-U.
Amplification IC defect. Diode defect. Defect in microcontroller. Replace the outdoor unit PCB.
Excessive amount of refrigerant.
For safety reason and to prevent component breakdown, always switch off the power before remove and connect the component.
Are the compressor's winding resistance (U-V, V-W or U-W) shorted?
YES
NO (Normal)
Compressor defective due to mechanical locked. Replace compressor.
Compressor defective due to winding shorted. Replace compressor.
106
19. Disassembly and Assembly Instructions
WARNING High Voltage is generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding with repair work. Failure to heed this caution may result in electric shocks.
19.1 CS-E9RKUAW CS-E12RKUAW
19.1.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures
19.1.1.1 To remove front grille
3. Hold both sides of the front grille and remove it by pulling up and toward
yourself gently.
2. Remove 2 caps and 2 screws at the bottom of discharge vane.
Figure 1
19.1.1.2 To remove power electronic controller
1. Lift to open the vertical vane gently.
2 Hooks (left hand side)
4. Remove the eco sensor complete by screw. Figure 2
5. Remove the control board cover by releasing the 2 hooks.
107
9. Pull out the main electronic controller and power electronic
controller halfway.
10. Detach 3 or 4 connectors as labeled from the electronic controller. Then pull out main controller gently
8. Remove screw to remove terminal board complete.
7. Detach the CN-DISP connector then remove the indicator complete.
6. Detach the Earth wire
Figure 3
19.1.1.3 To remove discharge grille
Figure 4
CN-FM CN-RMT
CN-STM1
CN-MSENS CN-DISP CN-TH
11. Pull out to remove the drain hose from the discharge grille
19.1.1.4
12. Then pull the discharge grille downward gently to dismantle it Figure 5
To remove control board
13. Remove 4 screws holding the control board then pull out the control board.
Figure 6
108
19.1.1.5 To remove cross flow fan and indoor fan motor
Figure 7
14. Remove the screw that holding the cross flow fan and fan motor axis.
16. Remove the bearing by pulling it out gently
15. Remove the screw from the evaporator.
Figure 8 17. Push the holdfast to the left and lift up the evaporator.
Evaporator
Cross flow fan
18. Remove the cross flow fan from the unit by pulling it to the left and downward.
Figure 9
19. Fan motor can be removed after the removal of cross flow fan.
Reminder: To reinstall the fan motor, adjust the fan motor connector to 45° towards you before fixing control board.
109
Cross Flow Fan
Figure 10
Reminder: To reinstall the cross flow fan, ensure cross flow fan is in line as
shown in figure 10
110
WARNING High Voltage is generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding with repair work. Failure to heed this caution may result in electric shocks.
19.2 CS-E18RKUAW CS-E24RKUAW
19.2.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures
19.2.1.1 To remove front grille
2. Remove 3 caps and 4 screws at the bottom of the discharge vane.
3. Hold both sides of the front grille and remove it by pulling up and toward you gently.
1. Lift to open the horizontal vane and intake grille gently.
Figure 1
19.2.1.2 To remove power electronic controller
2 Hooks (left hand side)
5. Remove the control board cover by releasing the 2 hooks.
4. Remove the eco sensor complete by screw. Figure 2
9. Pull out the main electronic controller and power electronic
controller halfway.
10. Detach 3 or 4 connectors as labeled from the electronic controller. Then pull out main controller gently
8. Remove screw to remove terminal board complete.
Figure 3
7. Detach the CN-DISP connector then remove the indicator complete.
6. Detach the Earth wire
111
Figure 4
CN-FM CN-RMT
CN-STM2 CN-STM1
CN-MSENS CN-DISP CN-TH
19.2.1.3 To remove discharge grille
11. Pull out to remove the drain hose from the discharge grille.
19.2.1.4
12. Then pull the discharge grille downward gently to dismantle it. Figure 5
To remove control board
13. Remove 4 screws holding the control board then pull out the control board.
Figure 6
19.2.1.5 To remove cross flow fan and indoor fan motor
Figure 7
14. Remove the screw that holding the cross flow fan and fan motor axis.
112
16. Remove the bearing by pulling it out gently.
15. Remove the screw from the evaporator.
Figure 8 17. Push the holdfast to the left and lift up the evaporator.
Evaporator
Cross flow fan
18. Remove the cross flow fan from the unit by pulling it to the left and downward.
Figure 9
19. Fan motor can be removed after the removal of cross flow fan.
Reminder: To reinstall the fan motor, adjust the fan motor connector to 45° towards you before fixing control board.
Cross Flow Fan
Figure 10
113
Reminder: To reinstall the cross flow fan, ensure cross flow fan is in line as
shown in figure 10
19.3 Outdoor Electronic Controller Removal Procedure
19.3.1 CU-E9RKUA CU-E12RKUA
Caution! When handling electronic controller, be careful of electrostatic discharge.
1 Remove the 3 screws of the Top Panel.
5 Remove the Control Board as follows:
Screw
Top Panel
Screws
Control Board
Release 3 Terminal Connectors and Earth Wire Screw
Fig. 1
2 Remove the 6 screws of the Front Panel.
Screws
Front Panel
Release 5· Connectors
Release Earth Wire Screw
Fig. 4
Remove the Terminal Cover and 3 Terminal Compressor
Remove 2 Screws
Screws
Fig. 2
3 Remove the screw of the Terminal Board Cover.
4 Remove the Top Cover of the Control Board by 4 hooks.
Hooks Top Cover Hooks
Control Board Compressor
Fig. 5
Electronic Controller
Control Board
Control Board
Fig. 3
Terminal Board Cover Screw
114
Fig. 6
19.3.2 CU-E18RKUA CU-E24RKUA
Caution! When handling electronic controller, be careful of electrostatic discharge.
1 Remove the 8 screws of the Top Panel.
4 Remove the Control Board.
Screws
Screws
Release the hooks Control board Release 7 terminal connectors
Screws
Fig. 1 2 Remove the 8 screws of the Front Panel.
Release 8 connectors
Fig. 4 5 Remove the 6 screws of the Electronic
Controller.
Screws
Screws
Fig. 2 3 Remove the Top Cover of the Electronic
Controller.
Hooks
Top Cover
Fig. 5
Caution! When handling electronic controller, be careful of electrostatic discharge.
Fig. 3 115
20. Technical Data
Technical data provided are based on the air conditioner running under free frequency.
20.1 Cool Mode Performance Data
Unit setting: Standard piping length, Hi Fan, Cool mode at 60.8°F Voltage: 230V
20.1.1 CS-E9RKUAW CU-E9RKUA
Rated frequency (compressor speed is fixed during forced heating or cooling for capacity measurement and diagnosis purpose)
Indoor (°C / °F)
Outdoor (°C / °F)
DB
WB
-20 (-4)
-10 (14)
0 (32)
5 (41)
TC SHC
IP
TC SHC
IP
TC SHC
IP
TC SHC
IP
27 19 (66.2) 10120 9156 508 10120 9156 516 10071 9237 504 10280 9429 476 (80.6) 22 (71.6) 10694 6508 540 10694 6508 549 10760 6603 517 11617 7015 386
23 16 (60.8) 9471 9376 485 9471 9376 493 9153 9062 527 10369 10265 424 (73.4) 18 (64.4) 9962 6484 498 9962 6484 506 9648 6373 530 10193 6706 447
20 13 (55.4) 8999 8909 525 8999 8909 534 8679 8592 547 7954 7874 375 (68) 16 (60.8) 9274 6447 535 9274 6447 544 9299 6400 525 8372 6037 355
Indoor (°C / °F)
Outdoor (°C / °F)
DB
WB
16 (60.8)
25 (77)
35 (95)
TC SHC
IP
TC SHC
IP
TC SHC
IP
27 19 (66.2) 10698 9191 422 9450 8466 617 9008 8558 690 (80.6) 22 (71.6) 11048 6569 420 10314 5946 590 9591 5942 678
23 16 (60.8) 9488 9393 473 8560 8474 633 8301 8218 699 (73.4) 18 (64.4) 10035 6503 456 9406 5994 616 8515 6133 690
20 13 (55.4) 7031 6961 209 6969 6899 478 7628 7552 702 (68) 16 (60.8) 8062 5730 402 8377 5865 630 7752 5886 695
46 (114.8)
TC SHC
IP
7391 6622 829
8067 4650 792
6695 6628 850
7357 4689 827
5174 5122 642
6552 4588 847
20.1.2 CS-E12RKUAW CU-E12RKUA
Rated frequency (compressor speed is fixed during forced heating or cooling for capacity measurement and diagnosis purpose)
Indoor (°C / °F)
Outdoor (°C / °F)
DB
WB
-20 (-4)
-10 (14)
0 (32)
5 (41)
TC SHC
IP
TC SHC
IP
TC
SHC
IP
TC
SHC
IP
27
19 (66.2) 12880 11530 678 12880 11530 689 12818 11632 671 13084 11874 635
(80.6) 22 (71.6) 13610 8196 720 13610 8196 732 13694 8315 689 14785 8834 515
23
16 (60.8) 12053 11933 647 12053 11933 657 11649 11533 703 13196 13064 565
(73.4) 18 (64.4) 12679 8165 664 12679 8165 674 12279 8026 706 12972 8445 596
20 13 (55.4) 11453 11339 700 11453 11339 712 11046 10935 729 10123 10022 500 (68) 16 (60.8) 11803 8119 714 11803 8119 725 11834 8060 700 10655 7603 474
Indoor (°C / °F)
Outdoor (°C / °F)
DB
WB
16 (60.8)
25 (77)
35 (95)
46 (114.8)
TC
SHC
IP
TC
SHC
IP
TC SHC
IP
TC SHC
IP
27 19 (66.2) 13616 11574 563 12028 10662 823 11465 10777 920 9407 8843 1105 (80.6) 22 (71.6) 14061 8272 560 13126 7487 786 12206 7483 904 10016 6140 1086
23 16 (60.8) 12075 11954 631 10894 10785 844 10565 10459 932 (73.4) 18 (64.4) 12772 8190 608 11971 7549 821 10837 7723 919
8669 8892
8582 6337
1120 1104
20 13 (55.4) 8948 8859 279 8870 8781 638 9708 9611 935 7966 7886 1123 (68) 16 (60.8) 10260 7216 536 10662 7386 841 9867 7413 926 8096 6082 1113
116
20.1.3 CS-E18RKUAW CU-E18RKUA
Rated frequency (compressor speed is fixed during forced heating or cooling for capacity measurement and diagnosis purpose)
Indoor (°C / °F)
Outdoor (°C / °F)
DB
WB
-20 (-4)
-10 (14)
0 (32)
5 (41)
TC
SHC
IP
TC
SHC
IP
TC
SHC
IP
TC SHC
IP
27
19 (66.2) 21188 17930 935 21167 17913 924 21141 18234 896 21082 17831 888
(80.6) 22 (71.6) 24306 14656 817 24282 14641 807 23146 14323 936 21589 13429 934
23 16 (60.8) 18646 18460 1032 18628 18442 1019 19803 19605 849 18879 18690 941 (73.4) 18 (64.4) 20846 13794 945 20825 13780 933 23204 14860 739 21619 13003 982
20 13 (55.4) 16414 16250 1024 16398 16234 1011 16292 16129 672 15704 15547 803 (68) 16 (60.8) 16372 12160 1182 16356 12148 1168 17139 12557 699 18527 13408 689
Indoor (°C / °F)
DB
WB
27 (80.6)
23 (73.4)
20 (68)
19 (66.2) 22 (71.6) 16 (60.8) 18 (64.4) 13 (55.4) 16 (60.8)
TC 21000 21726 19472 21253 17023 19378
16 (60.8) SHC 18063 14368 19278 13726 16853 15270
IP 876 879 876 878 734 1189
TC 18377 19983 17002 18690 15925 19083
Outdoor (°C / °F)
25 (77)
35 (95)
SHC
IP
TC
SHC
16061 1195 17197 15993
12710 1208 18977 9991
16832 1172 15737 15580
12233 1185 17325 11865
15765 1171 14512 14366
13310 1503 16210 6590
IP 1300 1317 1373 1398 1349 1469
46 (114.8)
TC SHC
IP
11804 10978 1169
13026 6858 1184
10802 10694 1234
11892 8144 1257
9961 9861 1212
11126 4523 1321
20.1.4 CS-E24RKUAW CU-E24RKUA
Rated frequency (compressor speed is fixed during forced heating or cooling for capacity measurement and diagnosis purpose)
Indoor (°C / °F)
DB
WB
27 (80.6)
23 (73.4)
20 (68)
19 (66.2) 22 (71.6) 16 (60.8) 18 (64.4) 13 (55.4) 16 (60.8)
TC 29512 33855 25972 29036 22863 22804
-20 (-4) SHC 24706 20194 25712 19007 22634 16755
IP 1691 1477 1866 1708 1851 2137
TC 29483 33821 25946 29006 22840 22781
Outdoor (°C / °F)
-10 (14)
SHC
IP
TC
24681 1670 29446
20174 1459 32240
25686 1843 27583
18988 1687 31474
22612 1828 22693
16738 2111 23873
0 (32) SHC 25124 19735 27307 20475 22466 17302
IP 1621 1692 1534 1335 1214 1263
TC 29365 30071 26296 30112 21873 25806
5 (41) SHC 24568 18504 26033 17917 21654 18475
IP 1606 1688 1701 1775 1451 1246
Indoor (°C / °F)
DB
WB
27 (80.6)
23 (73.4)
20 (68)
19 (66.2) 22 (71.6) 16 (60.8) 18 (64.4) 13 (55.4) 16 (60.8)
16 (60.8)
TC
SHC
29250 24889
30261 19797
27122 26851
29602 18912
23711 23474
26991 21041
IP 1584 1589 1584 1588 1326 2149
TC 25596 27833 23682 26032 22181 26580
Outdoor (°C / °F)
25 (77)
35 (95)
SHC
IP
TC
SHC
22130 2159 23953 22037
17513 2183 26432 13767
23445 2119 21920 21700
16855 2141 24131 16348
21959 2117 20212 20010
18340 2717 22578 9080
IP 2350 2381 2481 2527 2438 2655
46 (114.8)
TC
SHC
IP
16441 15126 2113
18143 9449 2140
15046 14895 2231
16563 11221 2272
13874 13735 2192
15497 6233 2387
TC : Total capacity (BTU) SHC: Sensible Heat Capacity (BTU) IP: Input Power (Watt)
117
20.1.5 CS-E9RKUAW CU-E9RKUA
Maximum Capacity
Indoor (°C / °F)
Outdoor (°C / °F)
DB
WB
-20 (-4)
-10 (14)
0 (32)
5 (41)
TC
SHC
IP
TC
SHC
IP
TC
SHC
IP
TC
SHC
IP
27 19 (66.2) 10120 8963 508 10120 8963 516 10073 9043 504 10281 9231 476 (80.6) 22 (71.6) 10694 6372 540 10694 6372 549 10758 6463 517 11615 6866 386
23 16 (60.8) 9472 9377 485 9472 9377 493 9155 9063 527 10369 10266 424 (73.4) 18 (64.4) 9963 6348 498 9963 6348 506 9646 6238 530 10192 6565 447
20 13 (55.4) 8998 8908 525 8998 8908 534 8677 8590 547 8268 8185 412 (68) 16 (60.8) 9274 6312 535 9274 6312 544 9298 6265 525 9046 6386 430
Indoor (°C / °F)
DB
WB
16 (60.8)
TC
SHC
IP
27 19 (66.2) 10748 9039 432 (80.6) 22 (71.6) 11601 6753 500
23 16 (60.8) 10305 10202 530 (73.4) 18 (64.4) 10271 6516 481
20 13 (55.4) 7725 7648 274 (68) 16 (60.8) 8766 6099 482
Outdoor (°C / °F)
25 (77)
35 (95)
TC
SHC
IP
TC
SHC
IP
10739 9418 730 10236 9520 850
11301 6378 670 10898 6610 835
9830 9732 751 9433 9339 861
9963 6216 671 9676 6822 850
7766 7688 564 8668 8582 864
8906 6104 691 8809 6548 856
46 (114.8)
TC
SHC
IP
7391 6873 829
8066 4892 792
6695 6628 850
7609 5365 842
6057 5996 768
6773 5034 864
20.1.6 CS-E12RKUAW CU-E12RKUA
Maximum Capacity
Indoor (°C / °F)
Outdoor (°C / °F)
DB
WB
-20 (-4)
-10 (14)
0 (32)
5 (41)
TC
SHC
IP
TC
SHC
IP
TC
SHC
IP
TC
SHC
IP
27 19 (66.2) 12898 11300 688 12929 11327 701 12884 11443 682 13157 11686 645
(80.6) 22 (71.6) 13642 8041
734 13662 8053
746 13744 8168
699 14846 8682
520
23 16 (60.8) 12127 12005 659 12127 12005 669 11687 11570 721 13236 13103 575
(73.4) 18 (64.4) 12720 8018
676 12720 8018
684 12318 8677
718 13017 8294
609
20 13 (55.4) 11506 11391 721 11506 11391 723 11103 10992 738 10492 10387 534
(68) 16 (60.8) 11871 7992
722 11871 7992
735 11898 7931
719 10697 7470
480
Indoor (°C / °F)
DB
WB
16 (60.8)
TC
SHC
IP
27 19 (66.2) 13666 11369 573
(80.6) 22 (71.6) 14263 8212
574
23 16 (60.8) 12250 12127 651
(73.4) 18 (64.4) 13004 8161
628
20 13 (55.4) 9499 9404
305
(68) 16 (60.8) 10721 7380
570
TC 13140 14635 11721 12802 9998 11038
Outdoor (°C / °F)
25 (77)
SHC
IP
TC
11400 945 13307
8170 921 14168
11603 960 12263
7901 921 12579
9898 756 11269
7484 919 11452
35 (95) SHC 12243 8500 12140 8774 11156 8421
IP 1150 1130 1165 1149 1169 1158
46 (114.8)
TC
SHC
IP
10079 9273 1234
10219 6131 1165
8721 8634 1198
9233 6440 1198
8175 8094 1254
8384 6165 1196
118
20.1.7 CS-E18RKUAW CU-E18RKUA
Maximum Capacity
Indoor (°C / °F)
Outdoor (°C / °F)
DB
WB
-20 (-4)
-10 (14)
0 (32)
5 (41)
TC
SHC
IP
TC
SHC
IP
TC
SHC
IP
TC
SHC
IP
27
19 (66.2) 21189 17546 935 21166 17526 924 21142 17843 896 21084 17448 888
(80.6) 22 (71.6) 24305 14340 817 24281 14326 807 23148 14016 936 21930 13348 956
23 15.7 (60.26) 18647 18461 1059 18627 18441 1046 19804 19606 871 19869 19670 1020 (73.4) 18.4 (65.12) 20845 13497 969 20824 13483 958 23203 14540 758 22131 13801 1005
20 13.3 (55.94) 16429 16265 1051 16467 16302 1038 16344 16181 689 15969 15809 855 (68) 15.8 (60.44) 16395 11915 1213 16354 11885 1198 17238 12358 717 18699 13241 735
Indoor (°C / °F)
DB
WB
27 (80.6)
23 (73.4)
20 (68)
19 (66.2) 22 (71.6) 15.7 (60.26) 18.4 (65.12) 13.3 (55.94) 15.8 (60.44)
16 (60.8)
TC
SHC
21002 17676
22971 14257
20101 19900
21595 13647
17252 17079
21220 13940
IP 896 972 945 921 785 1340
TC 20650 22493 18876 20343 17043 20423
25 (77) SHC 17660 13999 18687 13029 16872 13938
Outdoor (°C / °F)
IP 1395 1415 1358 1341 1301 1682
TC 19790 21839 18110 19937 16700 18654
35 (95) SHC 18009 11251 17929 13360 16533 7421
IP 1600 1621 1689 1720 1660 1808
46 (114.8)
TC
SHC
IP
11803 10740 1169
13024 6710 1184
10803 10695 1234
12014 8051 1290
10107 10006 1268
11332 4508 1387
20.1.8 CS-E24RKUAW CU-E24RKUA
Maximum Capacity
Indoor (°C / °F)
DB
WB
27 (80.6)
23 (73.4)
20 (68)
19 (66.2) 22 (71.6) 15.7 (60.26) 18.4 (65.12) 13.3 (55.94) 15.8 (60.44)
TC 29529 33889 26041 29126 22981 22865
-20 (-4) SHC 24182 19776 25781 18651 22751 16434
IP 1698 1510 1886 1721 1883 2158
TC 29508 33886 26014 29109 22967 22899
Outdoor (°C / °F)
-10 (14)
SHC
IP
TC
24166 1681 29484
19774 1511 32286
25754 1858 27645
18640 1721 31678
22737 1856 22865
16459 2164 24103
0 (32) SHC 24610 19334 27369 19633 22636 17090
IP 1631 1699 1559 1374 1264 1301
TC 29396 30549 26693 30211 22118 25973
5 (41) SHC 24059 18389 26426 18633 21896 18190
IP 1621 1756 1721 1801 1498 1358
Indoor (°C / °F)
DB
WB
27 (80.6)
23 (73.4)
20 (68)
19 (66.2) 22 (71.6) 15.7 (60.26) 18.4 (65.12) 13.3 (55.94) 15.8 (60.44)
16 (60.8)
TC
SHC
29283 24375
30371 18644
27338 27065
29757 18598
23957 23717
29269 19017
IP 1591 1618 1654 1611 1336 2451
TC 28181 30348 26106 27928 23626 28170
25 (77) SHC 23835 18680 25845 17690 23389 19014
Outdoor (°C / °F)
IP 2541 2481 2431 2464 2400 3000
TC 27297 30122 24980 27499 23034 25730
35 (95) SHC 24567 15347 24730 18225 22804 10123
IP 2720 2756 2872 2924 2822 3074
46 (114.8)
TC
SHC
IP
16457 14811 2126
18200 9273 2180
15205 15052 2275
16904 11203 2321
14061 13921 2212
15553 6119 2421
TC : Total capacity (BTU) SHC: Sensible Heat Capacity (BTU) IP: Input Power (Watt)
119
20.2 Heat Mode Performance Data
Unit setting: Standard piping length, Hi Fan, Heat mode at 86°F Voltage: 230V
20.2.1 CS-E9RKUAW CU-E9RKUA
Rated frequency (compressor speed is fixed during forced heating or cooling for capacity measurement and diagnosis purpose)
Indoor (°C / °F) DB
24 (75.2) 20 (68) 16 (60.8)
-20 (-4)
TC
IP
4364
747
4598
736
3711
718
-8.3 (17.06)
TC
IP
8712
1039
9315
1035
9571
1024
Outdoor (°C / °F)
1.7 (35.06)
8.3 (46.94)
TC
IP
TC
IP
11021 1128 12059 1129
11336 1106 12011 1120
12262 1116 12890 1149
12 (53.6)
TC
IP
12375 1149
12253 1124
12988 1104
23.9 (75.02)
TC
IP
13471 1114
14239 1089
13891 1071
20.2.2 CS-E12RKUAW CU-E12RKUA
Rated frequency (compressor speed is fixed during forced heating or cooling for capacity measurement and diagnosis purpose)
Indoor (°C / °F) DB
24 (75.2) 20 (68) 16 (60.8)
-20 (-4)
TC
IP
5021
833
5290
822
4270
802
-8.3 (17.06)
TC
IP
10024 1159
10717 1155
11012 1143
Outdoor (°C / °F)
1.7 (35.06)
8.3 (46.94)
TC
IP
TC
IP
12681 1259 13875 1260
13043 1235 13819 1250
14108 1245 14831 1283
12 (53.6)
TC
IP
13337 1282
14098 1254
13753 1233
23.9 (75.02)
TC
IP
15499 1243
16383 1216
15983 1195
20.2.3 CS-E18RKUAW CU-E18RKUA
Rated frequency (compressor speed is fixed during forced heating or cooling for capacity measurement and diagnosis purpose)
Indoor (°C / °F) DB
24 (75.2) 20 (68) 16 (60.8)
-20 (-4)
TC
IP
6715
1213
6913
1169
6455
1117
-8.3 (17.06)
TC
IP
12572 1615
12610 1554
12720 1485
Outdoor (°C / °F)
1.7 (35.06)
8.3 (46.94)
TC
IP
TC
IP
16051 1628 21041 1850
16284 1561 21599 1750
16459 1495 22135 1654
12 (53.6)
TC
IP
21969 1839
22844 1765
23456 1671
23.9 (75.02)
TC
IP
23675 1767
24618 1695
25278 1605
20.2.4 CS-E24RKUAW CU-E24RKUA
Rated frequency (compressor speed is fixed during forced heating or cooling for capacity measurement and diagnosis purpose)
Indoor (°C / °F) DB
24 (75.2) 20 (68) 16 (60.8)
-20 (-4)
TC
IP
8975
1733
9239
1670
8627
1596
-8.3 (17.06)
TC
IP
16802 2307
16854 2220
17000 2122
Outdoor (°C / °F)
1.7 (35.06)
8.3 (46.94)
TC
IP
TC
IP
21452 2326 28122 2643
21764 2230 28867 2500
21997 2136 29584 2363
12 (53.6)
TC
IP
29361 2628
30530 2522
31349 2388
23.9 (75.02)
TC
IP
31641 2524
32901 2422
33784 2293
TC : Total capacity (BTU) IP: Input Power (Watt)
120
20.2.5 CS-E9RKUAW CU-E9RKUA
Maximum Capacity
Indoor (°C / °F) DB
24 (75.2) 20 (68) 16 (60.8)
-20 (-4)
TC
IP
7056
1301
7433
1295
6000
1261
-8.3 (17.06)
TC
IP
9370
1320
10019 1315
10294 1301
Outdoor (°C / °F)
1.7 (35.06)
8.3 (46.94)
TC
IP
TC
IP
12234 1459 14183 1512
12583 1431 14126 1500
13611 1443 15160 1539
12 (53.6)
TC
IP
14534 1525
14390 1491
15253 1466
23.9 (75.02)
TC
IP
15225 1424
16093 1393
15700 1369
20.2.6 CS-E12RKUAW CU-E12RKUA
Maximum Capacity
Indoor (°C / °F) DB
24 (75.2) 20 (68) 16 (60.8)
-20 (-4)
TC
IP
8129
1625
8564
1664
6914
1654
-8.3 (17.06)
TC
IP
10796 1505
11543 1499
11861 1484
Outdoor (°C / °F)
1.7 (35.06)
8.3 (46.94)
TC
IP
TC
IP
14095 1663 16342 1724
14498 1631 16276 1710
15682 1645 17468 1755
12 (53.6)
TC
IP
15685 1738
16580 1700
16175 1671
23.9 (75.02)
TC
IP
17541 1623
18542 1588
18089 1561
20.2.7 CS-E18RKUAW CU-E18RKUA
Maximum Capacity
Indoor (°C / °F) DB
24 (75.2) 20 (68) 16 (60.8)
-20 (-4)
TC
IP
9834
1881
10124 1825
9454
1750
-8.3 (17.06)
TC
IP
14795 1984
14840 1910
14969 1829
Outdoor (°C / °F)
1.7 (35.06)
8.3 (46.94)
TC
IP
TC
IP
18316 1952 21374 1903
18582 1843 21940 1800
18782 1781 22485 1702
12 (53.6)
TC
IP
22308 1892
23196 1816
23818 1719
23.9 (75.02)
TC
IP
24058 1783
25016 1711
25687 1620
20.2.8 CS-E24RKUAW CU-E24RKUA
Maximum Capacity
Indoor (°C / °F) DB
24 (75.2) 20 (68) 16 (60.8)
-20 (-4)
TC
IP
13092 2741
13478 2641
12585 2500
-8.3 (17.06)
TC
IP
19696 2832
19756 2761
19928 2684
Outdoor (°C / °F)
1.7 (35.06)
8.3 (46.94)
TC
IP
TC
IP
24383 2755 28454 2812
24738 2650 29208 2660
25003 2521 29933 2515
12 (53.6)
TC
IP
29697 2796
30880 2683
31708 2541
23.9 (75.02)
TC
IP
32027 2525
33303 2423
34196 2295
TC : Total capacity (BTU) IP: Input Power (Watt)
121
Outlet Air (°F)
21. Service Data
Service data provided are based on the air conditioner running under rated frequency during forced cooling / forced heating mode.
21.1 Cool Mode Outdoor Air Temperature Characteristic
Condition - Indoor room temperature: 80°F Dry Bulb/67°F Wet Bulb - Unit setting: Standard piping length, forced cooling at 60.8°F, Hi fan - Compressor frequency: Rated for cooling operation - Piping length: 24.6ft - Voltage: 230V
21.1.1 CS-E9RKUAW CU-E9RKUA
230 64.5 64.0 63.5 63.0 62.5 62.0 61.5 61.0 60.5 60.0 59.5 59.0
-4 6 16 26 36 46 56 66 76 86 96 106 116 Outdoor Air Temperature (°F)
4.0
3.5
3.0
2.5
2.0
1.5 -4 6 16 26 36 46 56 66 76 86 96 106 116 Outdoor Air Temperature (°F)
152.0 150.0 148.0 146.0 144.0 142.0 140.0 138.0 136.0 134.0
-4 6 16 26 36 46 56 66 76 86 96 106 116 Outdoor Air Temperature (°F)
122
Current (A)
Gas Side Piping Pressure (PSI)
Outlet Air (°F)
Current (A)
Gas Side Piping Pressure (PSI)
21.1.2 CS-E12RKUAW CU-E12RKUA
230 62.0 61.5 61.0 60.5 60.0 59.5 59.0 58.5 58.0 57.5 57.0
-4 6 16 26 36 46 56 66 76 86 96 106 116 Outdoor Air Temperature (°F)
5.5 5.0 4.5 4.0 3.5 3.0 2.5
-4 6 16 26 36 46 56 66 76 86 96 106 116 Outdoor Air Temperature (°F)
150.0 148.0 146.0 144.0 142.0 140.0 138.0 136.0 134.0 132.0
-4 6 16 26 36 46 56 66 76 86 96 106 116 Outdoor Air Temperature (°F)
123
Outlet Air (°F)
Current (A)
Gas Side Piping Pressure (PSI)
21.1.3 CS-E18RKUAW CU-E18RKUA
230 68.0 66.0 64.0 62.0 60.0 58.0 56.0 54.0 52.0
-4 6 16 26 36 46 56 66 76 86 96 106 116 Outdoor Air Temperature (°F)
6.5 6.0 5.5 5.0 4.5 4.0
-4 6 16 26 36 46 56 66 76 86 96 106 116 Outdoor Air Temperature (°F)
175.0 170.0 165.0 160.0 155.0 150.0 145.0 140.0 135.0 130.0 125.0
-4 6 16 26 36 46 56 66 76 86 96 106 116 Outdoor Air Temperature (°F)
124
Outlet Air (°F)
Current (A)
Gas Side Piping Pressure (PSI)
21.1.4 CS-E24RKUAW CU-E24RKUA
230 60.0 59.0 58.0 57.0 56.0 55.0 54.0 53.0 52.0 51.0 50.0 49.0 48.0
-4 6 16 26 36 46 56 66 76 86 96 106 116 Outdoor Air Temperature (°F)
11.0 10.5 10.0
9.5 9.0 8.5 8.0 7.5 7.0
-4 6 16 26 36 46 56 66 76 86 96 106 116 Outdoor Air Temperature (°F)
142.0 137.0 132.0 127.0 122.0 117.0 112.0 107.0 102.0
-4 6 16 26 36 46 56 66 76 86 96 106 116 Outdoor Air Temperature (°F)
125
21.2 Heat Mode Outdoor Air Temperature Characteristic
Condition - Indoor room temperature: 68°F Dry Bulb/-°F Wet Bulb - Unit setting: Standard piping length, forced heating at 86°F, Hi fan - Compressor frequency: Rated for Heating operation - Piping length: 24.6ft - Voltage: 230V
21.2.1 CS-E9RKUAW CU-E9RKUA
Outlet Air (°F)
Current (A)
230
102.0 100.0
98.0 96.0 94.0 92.0 90.0 88.0 86.0 84.0 82.0
-4 1 6 11 16 21 26 31 36 41 46 51 56 61 66 71 76 Outdoor Air Temperature (°F)
5.2 5.0 4.8 4.6 4.4 4.2 4.0 3.8
-4 1
6 11 16 21 26 31 36 41 46 51 56 61 66 71 76 Outdoor Air Temperature (°F)
380.0 360.0 340.0 320.0 300.0 280.0 260.0 240.0
-4 1
6 11 16 21 26 31 36 41 46 51 56 61 66 71 76 Outdoor Air Temperature (°F)
Gas Side Piping Pressure (PSI)
126
21.2.2 CS-E12RKUAW CU-E12RKUA
Outlet Air (°F)
Current (A)
110.0 108.0 106.0 104.0 102.0 100.0
98.0 96.0 94.0 92.0 90.0 88.0
-4 1
5.8 5.6 5.4 5.2 5.0 4.8 4.6 4.4 4.2
-4 1
420.0 400.0 380.0 360.0 340.0 320.0 300.0 280.0 260.0
-4 1
230
6 11 16 21 26 31 36 41 46 51 56 61 66 71 76 Outdoor Air Temperature (°F)
6 11 16 21 26 31 36 41 46 51 56 61 66 71 76 Outdoor Air Temperature (°F)
6 11 16 21 26 31 36 41 46 51 56 61 66 71 76 Outdoor Air Temperature (°F)
Gas Side Piping Pressure (PSI)
127
21.2.3 CS-E18RKUAW CU-E18RKUA
Outlet Air (°F)
Current (A)
230
106.0 104.0 102.0 100.0
98.0 96.0 94.0 92.0 90.0 88.0
-4 1 6 11 16 21 26 31 36 41 46 51 56 61 66 71 76 Outdoor Air Temperature (°F)
8.4 8.2 8.0 7.8 7.6 7.4 7.2 7.0 6.8 6.6 6.4
-4 1
6 11 16 21 26 31 36 41 46 51 56 61 66 71 76 Outdoor Air Temperature (°F)
420.0 400.0 380.0 360.0 340.0 320.0 300.0 280.0
-4 1
6 11 16 21 26 31 36 41 46 51 56 61 66 71 76 Outdoor Air Temperature (°F)
Gas Side Piping Pressure (PSI)
128
21.2.4 CS-E24RKUAW CU-E24RKUA
Outlet Air (°F)
Current (A)
122.0 120.0 118.0 116.0 114.0 112.0 110.0 108.0 106.0 104.0 102.0
-4 1
12.0
11.5
11.0
10.5
10.0
9.5
9.0 -4 1
520.0 500.0 480.0 460.0 440.0 420.0 400.0 380.0 360.0 340.0
-4 1
230
6 11 16 21 26 31 36 41 46 51 56 61 66 71 76 Outdoor Air Temperature (°F)
6 11 16 21 26 31 36 41 46 51 56 61 66 71 76 Outdoor Air Temperature (°F)
6 11 16 21 26 31 36 41 46 51 56 61 66 71 76 Outdoor Air Temperature (°F)
Gas Side Piping Pressure (PSI)
129
21.3 Piping Length Correction Factor
The characteristic of the unit has to be corrected in accordance with the piping length.
21.3.1 CS-E9RKUAW CU-E9RKUA CS-E12RKUAW CU-E12RKUA
Cooling Capacity Correction Factor
1.040
1.030
1.020
1.010
1.000
0.990
0.980
0.970
0.960 9.5
1.060 1.050 1.040 1.030 1.020 1.010 1.000 0.990 0.980 0.970 0.960 0.950
9.5
230
13.5 17.5 21.5 25.5 29.5 33.5 37.5 41.5 45.5 49.5 Piping Length (ft)
14.5
19.5
24.5
29.5
34.5
39.5
44.5
49.5
Piping Length (ft)
Heating Capacity Correction Factor
Note: The graphs show the factor after added right amount of additional refrigerant.
130
21.3.2 CS-E18RKUAW CU-E18RKUA CS-E24RKUAW CU-E24RKUA
Cooling Capacity Correction Factor
1.020 1.010 1.000 0.990 0.980 0.970 0.960 0.950
9.5
1.010
1.000
0.990
0.980
0.970
0.960 9.5
230
19.5 29.5 39.5 49.5 59.5 69.5 79.5 89.5 99.5 Piping Length (ft)
19.5 29.5 39.5 49.5 59.5 69.5 79.5 89.5 99.5 Piping Length (ft)
Heating Capacity Correction Factor
Note: The graphs show the factor after added right amount of additional refrigerant.
131
22. Exploded View and Replacement Parts List
22.1 Indoor Unit
22.1.1 CS-E9RKUAW CS-E12RKUAW
O/I 46 I/I 47 I/I 48
4
3
40
CWH55025J
45
CWH55051J
44
17 20
18 54
22 21
5
8 9
2 7
1
27
37
38 39
41 42 51
50 53
52
6
10
16 14
23 11
13
12 25
15 24
43 34
28 29 30
35
33 26
49 36
55
Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
132
SAFETY
REF. NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 20 21 22 23 24 25 26 27 28 29 30 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
PART NAME & DESCRIPTION CHASSIS COMPLETE FAN MOTOR CROSS-FLOW FAN COMPLETE BEARING ASSY SCREW - CROSS-FLOW FAN PARTICULAR PIECE EVAPORATOR FLARE NUT (LIQUID) FLARE NUT (GAS) CLIP FOR SENSOR CONTROL BOARD CASING TERMINAL BOARD COMPLETE ELECTRONIC CONTROLLER - MAIN PARTICULAR PIECE - TERMINAL ELECTRONIC CONTROLLER-INDICATOR SENSOR COMPLETE SENSOR COMPLETE (ECO) ELECTRONIC CONTROLLER (ECO SENSOR) ELECTRONIC CONTROLLER (COMPARATOR) LEAD WIRE - PCB ECO CONTROL BOARD CASING FOR PCB ECO CONTROL BOARD TOP COVER INDICATOR HOLDER CONTROL BOARD FRONT COVER CO. DISCHARGE GRILLE COMPLETE BACK COVER CHASSIS FULCRUM VERTICAL VANE CONNECTING BAR AIR SWING MOTOR CAP - DRAIN TRAY HORIZONTAL VANE COMPLETE REMOTE CONTROL COMPLETE FRONT GRILLE COMPLETE INTAKE GRILLE COMPLETE GRILLE DOOR COMPLETE AIR FILTER SCREW - FRONT GRILLE CAP - FRONT GRILLE DRAIN HOSE INSTALLATION PLATE BAG COMPLETE - INSTALLATION SCREW OPERATING INSTRUCTION INSTALLATION INSTRUCTION INSTALLATION INSTRUCTION REMOTE CONTROL HOLDER BAG
QTY. 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 8 2 1 1 1 1 1 1 1 2 2 2 1 1 1 1 1 1 1 1
CS-E9RKUAW CWD50C1633 L6CBYYYL0055 CWH02C1076 CWH64K007 CWH551146 CWD933067 CWB30C5033 CWT251030 CWT251031 CWH321085 CWH102605A CWA28C2357 CWA73C9156 CWD933137A CWA748158 CWA50C3228 CWA50C2820 CWA745791 CWA746769 CWA67C9786 CWD933427 CWH131467 CWD933406 CWH13C1333 CWE20C3495 CWD933233B CWH621131 CWE241374 CWE261251 CWA981264 CWH521259 CWE24C1385 CWA75C4567 CWE11C5960 CWE22C1946 CWE14C1131 CWD001279 XTT4+16CFJ CWH521227 CWH851173 CWH361134 CWH82C1705 CWF569755 CWF616529 CWF616530 CWH361078 CWG861497
CS-E12RKUAW
CWB30C5026
CWT251032
CWA73C9157
REMARK O O
O O O O O O O O
O O O O
133
SAFETY
REF. NO. 51 52 53 54 55
PART NAME & DESCRIPTION SHOCK ABSORBER ( L ) SHOCK ABSORBER ( R ) C.C.CASE AIR PURIFYING FILTER BAG COMPLETE (TUBE CONNECTOR)
QTY. 1 1 1 1 1
CS-E9RKUAW CWG713386 CWG713387 CWG567355 CWD00C1141 CWH82C2030
(Note)
All parts are supplied from PHAAM, Malaysia (Vendor Code: 00029488). "O" marked parts are recommended to be kept in stock.
CS-E12RKUAW
REMARK O
134
22.1.2 CS-E18RKUAW CS-E24RKUAW
O/I 46 I/I 47 I/I 48 4 3
40
CWH55025J
45 CWH55051J
17 20
18
22
21
54 37
2 5
8
9
7
38 39
41 42
44 1
27
6
10 16 14
12
13
25
23 11
43 24 15
51
50
53
31 52
34
28 29 30 35 55
49 36
32 33 26
Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
135
SAFETY
REF. NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
PART NAME & DESCRIPTION CHASSIS COMPLETE FAN MOTOR CROSS-FLOW FAN COMPLETE BEARING ASSY SCREW - CROSS-FLOW FAN PARTICULAR PIECE EVAPORATOR FLARE NUT (LIQUID) FLARE NUT (GAS) CLIP FOR SENSOR CONTROL BOARD CASING TERMINAL BOARD COMPLETE ELECTRONIC CONTROLLER - MAIN PARTICULAR PIECE - TERMINAL ELECTRONIC CONTROLLER-INDICATOR SENSOR COMPLETE SENSOR COMPLETE (ECO) ELECTRONIC CONTROLLER (ECO SENSOR) ELECTRONIC CONTROLLER (COMPARATOR) LEAD WIRE - PCB ECO CONTROL BOARD CASING FOR PCB ECO CONTROL BOARD TOP COVER INDICATOR HOLDER CONTROL BOARD FRONT COVER CO. DISCHARGE GRILLE COMPLETE BACK COVER CHASSIS FULCRUM VERTICAL VANE CONNECTING BAR CONNECTING BAR AIR SWING MOTOR ASS'Y. AIR SWING MOTOR CAP - DRAIN TRAY HORIZONTAL VANE COMPLETE REMOTE CONTROL COMPLETE FRONT GRILLE COMPLETE INTAKE GRILLE COMPLETE GRILLE DOOR COMPLETE AIR FILTER SCREW - FRONT GRILLE CAP - FRONT GRILLE DRAIN HOSE INSTALLATION PLATE BAG COMPLETE - INSTALLATION SCREW OPERATING INSTRUCTION INSTALLATION INSTRUCTION INSTALLATION INSTRUCTION
QTY. 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 1 1 2 3 3 1 1 1 1 1 1
CS-E18RKUAW CWD50C1637 L6CBYYYL0056 CWH02C1077 CWH64K007 CWH551146 CWD933067 CWB30C3963 CWT251030 CWT251032
CWH32142 CWH102605A CWA28C2357 CWA73C9158 CWD933137A CWA748158 CWA50C3228 CWA50C2827 CWA745791 CWA746769 CWA67C9935 CWD933455 CWH131467 CWD933406 CWH13C1333 CWE20C3496 CWD933031B CWH621138 CWE241374 CWE261257 CWE261258 CWA98K1024 CWA981241 CWH521259 CWE24C1392 CWA75C4569 CWE11C5961 CWE22C1945 CWE14C1131 CWD001283 XTT4+16CFJ CWH521227 CWH851173 CWH361098 CWH82C1705 CWF569756 CWF616730 CWF616731
CS-E24RKUAW
CWB30C3967
CWT251033
CWA73C9159
REMARK O O
O O O O O O O O
O O O O
136
SAFETY
REF. NO.
PART NAME & DESCRIPTION
49
REMOTE CONTROL HOLDER
50
BAG
51
SHOCK ABSORBER ( L )
52
SHOCK ABSORBER ( R )
53
C.C. CASE
54
AIR PURIFYING FILTER
55
BAG COMPLETE (TUBE CONNECTOR)
QTY. 1 1 1 1 1 1 1
CS-E18RKUAW CWH361078 CWG861498 CWG713402 CWG713403 CWG567455 CWD00C1141 CWH82C2030
(Note)
All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488). "O" marked parts are recommended to be kept in stock.
CS-E24RKUAW
REMARK O
137
22.2 Outdoor Unit
22.2.1 CU-E9RKUA CU-E12RKUA
38
49 34
48
47
29
31 28
11 2
45
46 6
7
4 5
20
50
51 30
40
3
19
23
36 37
24 39 43 12
18
22
17
8
42 13
10
44
9
1
27 26 32
15
16 14
33 41
Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
138
SAFETY
REF. NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 22 23 24 26 27 28 29 30 31 32 33 34 36 37 38 39 40 41 42 43 44 45 46 47 48 49
PART NAME & DESCRIPTION CHASSIS COMPLETE FAN MOTOR BRACKET SCREW - FAN MOTOR BRACKET FAN MOTOR SCREW - FAN MOTOR MOUNT PROPELLER FAN ASSY NUT - PROPELLER FAN COMPRESSOR ANTI - VIBRATION BUSHING NUT - COMPRESSOR MOUNT CONDENSER EXPANSION VALVE DISCHARGE MUFFLER (EXPANSION VALVE) HOLDER COUPLING 2-WAYS VALVE (LIQUID) 3-WAY VALVE (GAS) TERMINAL COVER NUT - TERMINAL COVER SOUND PROOF BOARD SOUND PROOF MATERIAL SENSOR CO-COMP TEMP CONTROL BOARD COVER - TOP ELECTRONIC CONTROLLER - MAIN TERMINAL BOARD ASSY CABINET SIDE PLATE CO. SENSOR CO-AIR TEMP AND PIPE TEMP CABINET SIDE PLATE CABINET FRONT PLATE CO. CABINET TOP PLATE PLATE - C. B. COVER TERMINAL CONTROL BOARD COVER CO. HANDLE REACTOR 4-WAYS VALVE WIRE NET V-COIL COMPLETE (4 W. VALVE) HEATER BAG-COMPLETE STRAINER V-COIL COMPLETE (EXPANSION VALVE) DISCHARGE MUFFLER (4 W. VALVE) BAG BASE BOARD-COMPLETE SHOCK ABSORBER ( R ) SHOCK ABSORBER ( L ) C.C.CASE
QTY. 1 1 2 1 4 1 1 1 3 3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
CU-E9RKUA CWD50K2081A
CWD541089 CWH551217 ARW6404AC CWH55252J CWH03K1014 CWH56053J 5RS102XHA21 CWH50077 CWH561096 CWB32C3394 CWB051016J CWB121021 CWH351231A CWB021180J CWB011374 CWH171039A CWH7080300J CWH151172A CWG302570 CWA50C2340 CWH131264 CWA73C9160R CWA28K1154 CWE04C1226 CWA50C2793 CWE041492A CWE06C1142 CWE031018A CWH131301 CWH13C1345 CWE161010 G0C193J00002 CWB001058 CWD041161A CWA43C2432 CWA341065 CWG87C900 CWB111061 CWA43C2393 CWB121047 CWG861078 CWG50C2388 CWG712210 CWG712209 CWG565107
CU-E12RKUA
CWB32C4129
CWB021654 CWB011367
CWA73C9161R CWE04C1558 CWA50C3315 G0C193J00004
REMARK
O
O
O O O
O O o O
O O O
O
139
SAFETY
REF. NO. 50 51
PART NAME & DESCRIPTION SOUND PROOF MATERIAL SOUND PROOF MATERIAL
QTY. 1 1
CU-E9RKUA CWG302292 CWG302569
(Note)
All parts are supplied from PHAAM, Malaysia (Vendor Code: 00029488). "O" marked parts are recommended to be kept in stock.
CU-E12RKUA
REMARK
140
22.2.2 CU-E18RKUA CU-E24RKUA
35
31 34
30
5 6
10 8
9
19
52 33
25 51
21
3
20
4
11 45
28
41 14
50 49
40
39 42
15
2
23
12
13 37
36 47
7
16
1
48
43
Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
24 44
27 26 32
46
29
22 18 17
141
SAFETY
REF. NO. PART NAME & DESCRIPTION
1
CHASSIS COMPLETE
2
ANTI - VIBRATION BUSHING
3
COMPRESSOR
4
NUT - COMPRESSOR MOUNT
5
FAN MOTOR BRACKET
6
FAN MOTOR
7
SCREW - FAN MOTOR BRACKET
8
SCREW - FAN MOTOR MOUNT
9
PROPELLER FAN ASSY
10
NUT - PROPELLER FAN
11
CONDENSER
12
EXPANSION VALVE
13
STRAINER
14
4-WAYS VALVE
15
DISCHARGE MUFFLER (4 W. VALVE)
16
HOLDER COUPLING
17
3-WAY VALVE (GAS)
18
2-WAYS VALVE (LIQUID)
19
SOUND PROOF BOARD
20
TERMINAL COVER
21
NUT - TERMINAL COVER
22
V-COIL COMPLETE (EXPANSION VALVE)
23
SENSOR CO-COMP TEMP
24
SENSOR CO-AIR TEMP AND PIPE TEMP
25
REACTOR
26
TERMINAL BOARD ASSY
27
TERMINAL BOARD ASSY
28
ELECTRONIC CONTROLLER - MAIN
29
CONTROL BOARD COVER - COMPLETE
30
CABINET SIDE PLATE
31
HANDLE
32
CABINET SIDE PLATE
33
CABINET FRONT PLATE CO.
34
WIRE NET
35
CABINET TOP PLATE
36
RECEIVER
37
PACKING
39
SOUND PROOF MATERIAL
40
SOUND PROOF MATERIAL
41
V-COIL COMPLETE (4 W. VALVE)
42
HEATER
43
BAG-COMPLETE
44
TUBE ASSY CO. (CAP. TUBE)
45
CONTROL BOARD COVER - TOP
46
CONTROL BOARD COVER
47
BAG
48
BASE BOARD-COMPLETE
QTY. 1 3 1 3 1 1 3 4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 3 1 1 1 1 1 1 1 1 1 1
142
CU-E18RKUA CWD52K1228A
CWH50055 5KD240XAF21 CWH561049 CWD541127 EHDS80CAC CWH551217 CWH551323 CWH00K1006 CWH561092 CWB32C3516 CWB051018J CWB111076 CWB001057 CWB121055 CWH351228A CWB011672 CWB021464 CWH151197 CWH171039A CWH7080300J CWA43C2393 CWA50C2689 CWA50C2710 G0C452J00002 CWA28K1277 CWA28K1076J CWA73C9162R CWH13C1210 CWE041490A CWE161010 CWE041488A CWE06K1070 CWD041128A CWE031131A
CWB14030 CWB81043 CWG302245 CWG302246 CWA43C2392 CWA341067 CWG87C900 CWT01C6093 CWH131333 CWH131332 CWG861154 CWG62C1082
CU-E24RKUA
CWB011363
CWA73C9163R
REMARK O O
O O O O
O O O O O O O
O
SAFETY
REF. NO. 49 50 51 52
PART NAME & DESCRIPTION SHOCK ABSORBER ( R ) SHOCK ABSORBER ( L ) C.C. CASE ELECTRONIC CONTROLLER - NF
QTY. 1 1 1 1
CU-E18RKUA CWG712880 CWG712879 CWG565614 CWA747077
(Note)
All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488). "O" marked parts are recommended to be kept in stock.
CU-E24RKUA
REMARK
Printed in Malaysia FB0115-0
143
Acrobat Distiller 9.5.5 (Windows)