Friedrich Air Conditioner Mr09C1H Users Manual DSS_Manual_05 05 11

MR12C1H to the manual 5db71477-e6e6-414f-9331-8b3cbeffb404

2015-02-02

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Service and Parts Manual

2 0 11
SPLIT TYPE ROOM AIR CONDITIONER
WALL MOUNTED TYPE

Models
Indoor Unit

MW09C1H

MW12C1H

Outdoor Unit

MR09C1H

MR12C1H

Table of Contents
Model and product code .................................................................................................. 3
Summary and features ......................................................................................................... 4
1. Safety Precautions ............................................................................................................... 5-7
2. Specifications ........................................................................................................................... 8
2.1 Unit Specifications........................................................................................................... 8-11
2.2 Operation Date ............................................................................................................... 12
2.3Expanded capacity data tables for both cooling and heating ..................................... 13
2.4 Operation
n Characteristic Curve ...................................................................................... 14
2.5 Noise criteria curve tables for both models.................................................................... 15

3. Construction Views ..............................................................................................................

3.1 Indoor Unit ....................................................................................................................... 16
3.2 Outdoor Unit .................................................................................................................... 16
4. Refrigerant System Diagram ....................................................................................... 17

5. Schematic Diagram ..............................................................................................................

18-21

5.1 Electrical Date ................................................................................................................. 18
5.2 Electrical Wiring ........................................................................................................... 18-19
5.3 Printed Circuit Board ..................................................................................................... 20-21
6. Function and Control ....................................................................................................... 22-35

7. Installation Manual ............................................................................................................ 36-43
8. Troubleshooting

................................................................................................................... 44-72
9.1 Precautions before Performing Inspection or Repair .................................................... 44
9.2 Confirmation ................................................................................................................. 44

9.3 Judgement by Flashing LED of Indoor/Outdoor Unit ........................................................... 44-51
9.4 How to Check simply the main part .................................................................................... 52-62

9. Removal Procedure

....................................................................................................... 73-78

10. Exploded Views and Parts List

............................................................................. 79-85

Model and product code

Model and product code
Voltage range

Complete unit model

Indoor unit model

Outdoor unit model

115V ~ 60H zM

M09CIH

MW09CIH

MR09CIH

115V ~ 60H zM

M12CH

MW12CIH

MR12CIH

Summary and features

Summary and features
OutdoorUnit
MR09CI H
MR012CIH

Remote control windo w
YB1FAF

IMPORTANT SAFETY INFORMATION
T h e i n f o r m a t i o n c o n t a i n e d i n t h i s m a n u a l i s i nt e n d e d f o r u s e by a q u a l i f i e d s e r v i c e
technician who is familiar with the safety procedures required for installation and repair, and
who is equipped with the proper tools and test instruments required to ser vice this product.
Installation or repairs made by unqualified persons can result in subjecting the unqualified person making
such repairs as well as the persons being served by the equipment to hazards resulting in injury or electrical
shock which can be serious or even fatal.
Safety warnings have been placed throughout this manual to alert you to potential hazards that may be
encountered. If you install or perform service on equipment, it is your responsibility to read and obey these
warnings to guard against any bodily injury or property damage which may result to you or others.

Your safety and the safety of others are very important.
We have provided many important safety messages in this manual and on your appliance. Always read, understand and obey
all safety messages.
This is a safety Alert symbol.
This symbol alerts you to potential hazards that can kill or hurt you and others.
All safety messages will follow the safety alert symbol with the word “WARNING” or “CAUTION”.
These words mean:

WARNING

You can be killed or seriously injured if you do not follow instructions.

CAUTION

You can receive minor or moderate injury if you do not follow instructions.

All safety messages will tell you what the potential hazard is, tell you how to reduce the chance of injury, and tell you what will
happen if the instructions are not followed.

NOTICE

A message to alert you of potential property damage will have the word “NOTICE”.
Potential property damage can occur if instructions are not followed.

PERSONAL INJURY OR DEATH HAZARDS
ELECTRICAL HAZARDS:
•

Unplug and/or disconnect all electrical power to the unit before performing inspections, maintenance,
or service.

•

Make sure to follow proper lockout/tag out procedures.

•

Always work in the company of a qualified assistant if possible.

•

Capacitors, even when disconnected from the electrical power source, retain an electrical charge
potential capable of causing electric shock or electrocution.

•

Handle, discharge, and test capacitors according to safe, established, standards, and approved
procedures.

•

Extreme care, proper judgment, and safety procedures must be exercised if it becomes necessary
to test or troubleshoot equipment with the power on to the unit.

•

Do not spray or pour water on the return air grille, discharge air grille, evaporator coil, control panel,
and sleeve on the room side of the air conditioning unit while cleaning.

•

Electrical component malfunction caused by water could result in electric shock or other electrically
unsafe conditions when the power is restored and the unit is turned on, even after the exterior is dry.

•

Never operate the A/C unit with wet hands.

•

Use air conditioner on a single dedicated circuit within the specified amperage rating.

•

Use on a properly grounded outlet only.

•

Do not remove ground prong of plug.

•

Do not cut or modify the power supply cord.

•

Do not use extension cords with the unit.

•

Follow all safety precautions and use proper and adequate protective safety aids such as: gloves,
goggles, clothing, adequately insulated tools, and testing equipment etc.

•

Failure to follow proper safety procedures and/or these warnings can result in serious injury or death.

REFRIGERATION SYSTEM REPAIR HAZARDS:
•

Use approved standard refrigerant recovering procedures and equipment to relieve pressure before
opening system for repair.

•

Do not allow liquid refrigerant to contact skin. Direct contact with liquid refrigerant can result in minor
to moderate injury.

•

Be extremely careful when using an oxy-acetylene torch. Direct contact with the torch’s flame or hot
surfaces can cause serious burns.

•

Make sure to protect personal and surrounding property with fire proof materials.

•

Have a fire extinguisher at hand while using a torch.

•

Provide adequate ventilation to vent off toxic fumes, and work with a qualified assistant whenever
possible.

•

Always use a pressure regulator when using dry nitrogen to test the sealed refrigeration system for
leaks, flushing etc.

•

Make sure to follow all safety precautions and to use proper protective safety aids such as: gloves,
safety glasses, clothing etc.

•

Failure to follow proper safety procedures and/or these warnings can result in serious injury or death.

MECHANICAL HAZARDS:

•

Extreme care, proper judgment and all safety procedures must be followed when testing,
troubleshooting, handling, or working around unit with moving and/or rotating parts.

•

Be careful when, handling and working around exposed edges and corners of the sleeve, chassis,
and other unit components especially the sharp fins of the indoor and outdoor coils.

•

Use proper and adequate protective aids such as: gloves, clothing, safety glasses etc.

•

Failure to follow proper safety procedures and/or these warnings can result in serious injury or death.

PROPERTY DAMAGE HAZARDS
FIRE DAMAGE HAZARDS:
•

Read the Installation/Operation Manual for the air conditioning unit prior to operating.

•

Use air conditioner on a single dedicated circuit within the specified amperage rating.

•

Connect to a properly grounded outlet only.

•

Do not remove ground prong of plug.

•

Do not cut or modify the power supply cord.

•

Do not use extension cords with the unit.

•

Be extremely careful when using acetylene torch and protect surrounding property.

•

Failure to follow these instructions can result in fire and minor to serious property damage.

WATER DAMAGE HAZARDS:
•

Improper installation, maintenance or servicing of the air conditioner unit can result in water damage
to personal items or property.

•

Insure that the unit has a sufficient pitch to the outside to allow water to drain from the unit.

•

Do not drill holes in the bottom of the drain pan or the underside of the unit.

•

Failure to follow these instructions can result in damage to the unit and/or minor to serious property
damage.

2.
1 Unit Specifications

Specifications

09
Kof115
VMo
del
s
Model
Function
Rated Voltage
Frequency
(Inverter different Compressor
speed)
Total Capacity
(Inverter different Compressor
speed)
Power Input
(Inverter different Compressor
speed)
Rated Input
Rated Current

Air Flow Volume

Indoor MW09CI
H
Outdoor
Unit MR09C1H
MW09CIH

High
Standard
Low
High
Standard
Low
High
Standard
Low
High
Standard
High
Standard
Turbo
SH

Hz
Hz
Hz
W / Btu/h
W / Btu/h
W / Btu/h
W
W
W
W
W
A
A

H
M

CFM

L
Dehumidifying Volume
STD
Indoor unit
Fan Motor
Speed

Turbo
SH
H
M
L

Output
Capacitor
RLA
Type
Diameter-Length

Fan

CFM
CFM
CFM
pints/hour
W /W

in.
in.
in.

25.4 X 1 X 10.5

r/ m i n
r/ m i n
r/ m i n
r/ m i n
W
F
A
in.

width (L)
Model
Output

Swing
Motor
Fuse (A)
Sound Pressure Level

Sound Power Level

Net Weight /Gross Weight

H
M
L
H
M
L

294
253
218
1.69
14.0
22
MW09CIH
1260
1050
920
730
20
4 .0
0.38
Cross flow fan
3.62 X 25.4
Aluminum fin-copper tube
216
0.019 - 0.055

Evaporator
Pipe Diameter
Row-Fin Gap

COOLING
115V~
70
41
15
3100/10600
2650/9000
1300/4435
1050
640
180
1050
640
16.8
7.0
330

in.

MP24AA
2 .4
PCB 3.15A
34
30
26
44
40
36
33 1/4
X 10 7/8 X 7 1/8
33.3X10.8X11

in.
lbs

36X10X14
22
16X24.3X130.9

W
A
dB (A)
dB (A)
dB (A)
dB (A)
dB (A)
dB (A)

Remar
k:
s
Rating conditions are:
Cooling: Indoor air temperature 80¡F D.B. / 67¡F W.B.
Outdoor air temperature 95.0¡F D.B. / 75¡F W.B.
Heating: Indoor air temperature 70¡F D.B./ 60¡F W.B.
Outdoor air temperature 47¡F D.B. / 43¡F W.B.

Specifications

12K of 115V Models
Model
Function
Rated Voltage
Frequency
(Inverter different Compressor
speed)
Total Capacity
(Inverter different Compressor
speed)
Power Input
(Inverter different Compressor
speed)
Rated Input
Rated Current

Air Flow Volume

Outdoor Unit
MR12CH - SYSTEM
MW12CIH

High
Standard
Low
High
Standard
Low
High
Standard
Low
High
Standard
High
Standard
Turbo
SH
H
M
L

Dehumidifying Volume
EER / C.O.P
SEER/HSPF
Indoor unit
Fan Motor
Speed

Turbo
SH
H
M
L

Output
Capacitor
RLA
Type
Diameter-Length

Fan

Hz
Hz
Hz
W / Btu/h
W / Btu/h
W / Btu/h
W
W
W
W
W
A
A
CFM
CFM
CFM
CFM
pints/hour
W /W

r/m i n
r/m i n
r/m i n
r/m i n
W
F
A
in.

Evaporator
Pipe Diameter
Row-Fin Gap

Sound Power Level

253
218
2.54
12.00
.
22
1260
1050
920
730
20
1.0
0.2
Cross flow fan
3.62X25.4
Aluminum fin-copper tube
.276
.077-.055

in.

H
M
L
H
M
L

25.4X1X10.5
MP24AA
2.4
PCB 3.15A
34
30
26
44
40
36

W
A
dB (A)
dB (A)
dB (A)
dB (A)
dB (A)
dB (A)
in.

Net Weight /Gross Weight

277

in.
in.

width (L)
Model
Output

Swing
Motor
Fuse (A)
Sound Pressure Level

COOLING
208-230V~
115
70
41
15
4100/14000
3520/12000
1320/4500
1050
640
180
1050
640
6.5
3.2
300

in.
lbs

33 1/433.3X10.3X7.1
X 10 7/8 X 7 1/8
36X10X14
22
.26.3/30.9

Remarks
Rating conditions are:
Cooling: Indoor air temperature 26.7¡C D.B. / 19.4¡C W.B.
Outdoor air temperature 35.0¡C D.B. / 23.9¡C W.B.
Heating: Indoor air temperature 21.1¡C D.B./ 15.6¡C W.B.
Outdoor air temperature 8.33¡C D.B. / 6.11¡C W.B.

Specifications

Outdoor Unit

MR09C1H
Manufacturer/trademark

SANYO

Model

C-6RZ110H1A

Type

Twin rotory

Compressor L.R.A. (A)

RLA(A)

4.59

Power Input(W)

800

Overload Protector

Int11l-3979
Electronic Expansion Valve
throttling
Transducer starting

Throttling Method
Starting Method
Working Temp Range
Heat
Exchanger
Coil

Coil

Aluminum fin-copper tube

Pipe Diameter

.275

Rows-Fin Gap

in.

2 - .005

Coil length (l) x height (H) x coil width (L)
Speed
Fan Motor

23.94 X 20 X 1.73
rpm

900/650

Output of Fan Motor

RL A

0.17

Capacitor
Air Flow Volume of Outdoor Unit
Fan

41 - 115

μF

CFM

1118

Type-Piece
Diameter

Axial fan - 1
in.

Defrosting Method
Climate Type

15.7
/
T1

Isolation

Moisture Protection
Permissible Excessive Operating
Pressure for the Discharge Side
Permissible Excessive Operating
Pressure for the Suction Side
Sound Pressure Level
Sound Power Level

IP24
PSI

552

PSI

175

dB (A)

Dimension (W×H×D)

in.

63
12.6
33 33.4
3/8 XX23
1/2XX21.3
12 1/2

Dimension of Package (L×W×H)

in.

34.6 X 14.2 X 22.3

Net Weight /Gross Weight

lbs

79.4/90.4
R410A

lbs

2.65
.

25
.33

Refrigerant

Name of refrigerant
Weight
Factory Prescharge

Connection Gas additional charge
Pipe
Liquid Pipe Diameter
Gas Pipe Diameter

02/H
mm

Φ6(1/4”)

Φ9(3/8”)

Max. Interunit Height Difference

Max. Interunit Piping Length

The above data is subject to change without notice. Please refer to the nameplate of the unit.

Specifications

Outdoor Unit

MR12C1H
Manufacturer/trademark

SANYO

Model

C-6RZ110H1A

Type

Twin rotory

Compressor L.R.A. (A)

RLA(A)

4.59

Power Input(W)

Overload Protector
Throttling Method
Starting Method
Working Temp Range
Heat
Exchanger
Coil

41 - 115
Aluminum fin-copper tube

Pipe Diameter

Rows-Fin Gap

in.

2 - .005

747X508X44

rpm

900/680

Speed

.275

Output of Fan Motor

RL A

0.17

μF

Capacitor
Air Flow Volume of Outdoor Unit
Fan

Coil

Coil length (l) x height (H) x coil width (L)

Fan Motor

800
Int11l-3979
Electronic Expansion Valve
throttling
Transducer starting

CFM

Type-Piece
Diameter

1118
Axial fan

in.

Defrosting Method
Climate Type

15.7
/
T1

Isolation

Moisture Protection
Permissible Excessive Operating
Pressure for the Discharge Side
Permissible Excessive Operating
Pressure for the Suction Side
Sound Pressure Level
Sound Power Level

dB (A)

IP24
PSI

552

PSI

175

dB (A)

55
65
33 3/8
X 23
1/2 XX12
1/2
33.4
X 12.6
21.3

Dimension (W×H×D)

in.

Dimension of Package (L×W×H)

in.

34.6 X 14.2 X 22.3

Net Weight /Gross Weight

lbs

79.4/90.4
R410A

Weight

lbs

2.65
.

Factory Prescharge
Connection Gas additional charge
Pipe
Liquid Pipe Diameter

ft
H

25
1/4 oz per ft

Refrigerant

Name of refrigerant

Gas Pipe Diameter

Φ6(1/4”)

Φ9(3/8”)

Max. Interunit Height Difference

Max. Interunit Piping Length

The above data is subject to change without notice. Please refer to the nameplate of the unit.

Specifications

Appending date
Table showing operation frequency limits for cooling and heating
Outdoor Relative Humidity 40%

Outdoor Relative Humidity 72%

140

130
120

Indoor Wet Bulb
Temperature( )

59°F
68°F

110

77°F

100
80
60
40

Capacity Change Ratio (%)

140

130
120

59°F
60.8°F

Indoor Wet Bulb
Temperature( )

110

62.6°F

100
80
60
40
20

15
35
55
75
95
Compressor Frequency(Hz)

Performance date for both cooling and heating
COOLING:
Temperature Condition
(°F)
Indoor

Outdoor

80.06/66.92
80/67

95/–

Model
name

Standard
pressure
P (MPa)

09K

0.8 to 1.1

12K

0 .8 to 1 .0

Heat exchanger pipe
temp.

EVP (°F)C

OD(°F)

53 to 57
50 to 54

105 to 104
109 to 113

Outdoor fan Compressor
revolution
Indoor fan mode
(rps)
mode
Turbo
Turbo

High

Rated

High

Rated

HEATING:
Temperature Condition
(°F)
Indoor

Outdoor

67/60
47/43
46.99/42.99
66.98/60.08

Model
name

Standard
pressure
P (MPa)

09K

2.8 to 3.2

12K

2.8 to 3.2

Heat exchanger pipe
temp.

EVP (°F)
99 to 100
108 to 111

COD(°C)
2 to 4
0 to 3

Compressor
Indoor fan Outdoor fan revolution
mode
(rps)
mode
Turbo
Turbo

High

Rated

High

Rated

NOTES :
(1) Measure surface temperature of heat exchanger pipe around center of heat exchanger path
U bent. (Thermistor themometer)
(2) Connecting piping condition : 7.6 m

Specifications

Expanded c apacity data tables for both cooling and heating
Cooling

Capacity Ratio (%)

110
• Conditions
DB80°F/WB67°F
Indoor: DB80.06˚F/WB66.92˚F
Indoor air flow : TURBO
Pipe length : 7.6m

100

115
113
111

108
106

104
102

100
99
97
95
93
91
90

Outdoor temp. (˚F)

Capacity Variation Ratio According to Pipe Length

110

110
• Conditions

• Conditions

Indoor: DB80°F/WB67°F
Outdoor: DB95°F/WB75°F

105

Indoor: DB80°F/WB67°F
Outdoor: DB95°F/WB75°F

105

Indoor air flow: TURBO

100

95
Standard pipe length 7.6m

Maximum Elevation 7.6m

Maximum pipe length 20m
80

Total pipe length (m)

3.04

6.07

9.0

Total Elevation (m)

Specifications

Operation C haracteristic Curve

Cooling

• Conditions

25.0
22.5

Indoor: DB80°F/WB67°F
Outdoor: DB95°F/WB75°F

Indoor air flow : TURBO
Pipe lengt: 7.6m

20.0

Current (A)

9 btu unit

17.5
15.0
12.5
10.0
7.5

115V

5.0
2.5
0
01

Compressor speed (rps)

1 2 K o12
f 11
5 Vunit
U n i ts
btu

Cooling

25.0
22.5

Current (A)

20.0

• Conditions
:
Indoor: DB80°F/WB67°F
Outdoor: DB95°F/WB75°F
Indoor air flow : TURBO
Pipe length: 7.6m

17.5
15.0
12.5
10.0

115V

7.5
5.0
2.5
0
01

Compressor speed (rps)

Specifications

2.5 Noise criteria curve tables for both models

0099 Kbtu
U nunits
i ts
70

Indoor side noise when blowing

Outdoor side noise

40
60

Noise/dB(A)

Low

MiddleH

igh

Turbo
20
0

Indoor fan motor rotating speed

100

Compressor frequency/Hz

112
2 Kbtu
U n iunit
ts

Indoor side noise when blowing

Outdoor side noise

40
60

Noise/dB(A)

30
20

Low

MiddleH

igh

Indoor fan motor rotating speed

Turbo
20
0

100

Compressor frequency/Hz

Constrction views

3. Construction Views
3.1 Indoor Unit

D
5
1 31/4
5

21
542

61 6
3/4
9

Unit:m m

3.2 Outdoor Unit
W2

W3
D2
W4

Indoor Unit (mm)

System
Model
Number
09K
0 9K
12K
1 2K

Outdoor Unit (mm)

Cabinet

Additional Dimensions

33 1/4

10 7/8

7 1/8

30 3/4

23 1/2

10 7/8

12 1/2

33 3/8

21 1/2

Refrigerant System Diagram

4. Refrigerant System Diagram
Cooling Models

INDOOR UNIT

OUTDOOR UNIT
GAS SIDE
3-WAY VALVE

Muffler

Discharge

HEAT
EXCHANGE
(EVAPORATOR)

Suction

Accumlator

COMPRESSOR
HEAT
EXCHANGE
(CONDENSER)

LIQUID SIDE
2-WAY VALVE

Strainer

Electric Expansion
Valve

Strainer

COOLING

Schematic Diagram

5. Schematic Diagram
5.1 Electrical Date
Indoor Unit
Symbol

Color symbol

Symbol

WHITE

Color symbol
BROWN

YELLOW

BLUE

RED

BLACK

YELLOW GREEN

YEGN

PROTECTIVE EARTH

Outdoor Unit
Symbol

Parts name

REACROR

PCB1~PCB2
S10/S11S40/S70/S80/S90

Symbol

Color symbol

WHITE

PRINTED CIRCUIT BOARD

YELLOW

CONNECTOR

RED

SAT

OVERLOAD

SAT OVERLOAD BN BROWN

COMP

COMPRESSOR

BLUE

PROTECTIVE EARTH

BLACK
YELLOW GREEN

YEGN

5.2 Electrical wiring
These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit.

Indoor Unit

ROOM
TEM.SENSOR

DISPLAY

TUBE
TEM.SENSOR

AP1
CN1 CN2

RT1

RT2

13
XT1

ROOM

DISP-1

TUBE

DISP-2

W4 BU
L1

COM-OUT

N(1)
W5 BK
W3 BN

L1
CAP
AC-L

AP2

PGF

SWING-UD

FAN MOTOR

EVAPORATOR

ELECTRIC BOX

TC
II

SWING MOTOR(U.D)

W1 YEGN

TR_IN

TR_OUT

M2
M1

W2 YEGN

L-OUT
K4

JUMP

2
OUTDOOR UNIT

TRANSFORMER

Schematic Diagram

Outdoor Unit
Cooling Models of 115V
COMP
CT1,2

W10 RD

W3YEGN

R COMP E

TUBE
OUTROOM EXHUAST
TEM.SENSOR TEM.SENSOR TEM.SENSOR

RT3
0

RT4
0

RT5
0

I
N
D
O
O
R

W4 BK
W14 BN
L1 W1 BN

L
U
N
I
T

W15 BU

N(1)
2
3

OUTROOM EXHAUST

OVERHEAT OUTTUBE

XT2

W8 YEGN

L2
L2
L2
W5 BU W6 YE W7 BK
U

L1 W2 BU

FILTER
1 3
2 4
E

AP1
L4 W17 RD
AC-L1
L4 W16 WH
AC-N1

W13 YEGN
POWER
N
L

COMU

AC-N3AC-N4 AC-L3 AC-L2

CN1

OFAN

EKV

AC-N5 AC-L2 AC-L4

W18 YEGN
W20 BU W23 OG W21 BN

G
G

W19 BU

W24 RD

C3
1
2

2
1

W22 WH

FAN MOTOR
G

Schematic Diagram

5.3 Printed Circuit Board

TOP VIEW
4

Interface of neutral wire

Transformer input

Interface of PG motor

Auto button

Feedback from PG motor

Up&Down swing

Jumper cap

Indoor temperature sensor

Pipe temperature sensor

DISP-1, DISP-2 display interface

Protective tube

Communication interface

12
8
11
9

BOTTOM VIEW

Schematic Diagram

TOP VIEW
Terminal of
jump wire,
live wire and
neutral wire,
AC-N4 joint
AC-N3,
External connect highAC-L2 joint capacity positive terminal
External connect highAC-L3
capacity negative
Protective
tube
terminal

Slug of on-off
power

High frequency
transformer

Stabilized voltage
block 7805

IPM module

Neutral wire terminal
of 4-way valve
Live wire terminal of 4-way
valve

Terminal of jumper
wire, neutral wire
Main relay

Terminal of DC fan

Terminal of
compressor
overload
protector

Discharge
terminal of
compressor

Terminal of
outdoor pipe
temperature

Outdoor
ambient
temperature
sensor

Protective
tube
Terminal of power
lead-in wire and
live wire

Terminal of
ground wire

Terminal of
Terminal of
power lead-in communication wire
wire and
neutral wire

BOTTOM VIEW

Function and Control

6. Function and Control
6.1 Remote Control Operations
1

START / STOP
P res
to s tart or s top operation.
s ON/OFF
Press it to start or stop operation
: P ress to decrease temperature
setting.

MODE

: P res
s to itincreas
e temperature
Press
to select
operation mode
setting.
(AUTO/COOL/DRY/FAN/HEAT)

AUTO
FAN +
: Press it to increase temperature
P res s to s et fan s peed.
setting

MODE
: Press it to decrease temperature
P res s to s elect operation mode
setting
(AUTO/COOL/DRY/FAN/HEAT).

1 1

10
10

12
13

9
12
13
15

TIMER
TIMER
ON ON

Press itPress
to set itauto-on
timer. timer
to set auto-on

7
11

CLOCK

6
8

Press itPress
set clock.
it to set swing angle

56
9

FAN
SENSOR
Press it to set fan speed

4
4

AIR
SWEEP
TIMER OFF

Press it set swing angle.
Press it to set auto-off timer

11
12

13
14

EXTEND
CLOCK
TEMPPress it to set clock
X-FAN (page 31) ?
TIMER OFF
itTEMP
Press
to set auto-off
timer
(page
31) ?
TURBO
TURBO(page 32)
?
SLEEP(page 32)
SLEEP

Note:
Onlyname
namedifferent
different between
Note:
Only
betweenX-FAN
X-Fanand BLOW,

15
butbut
thethe
function
is theissame.
and Blow,
function
the same.

LIGHT
LIGHT
PressPress
it to turn
light.
it toon/off
turn the
on/off
the light.

*Remote control works with cool and Heat Pump Models

Function and Control

1 ON/OFF :

Press this button to start the unit operation .Press this button again to stop the unit operation.
2 MODE :

Each time you press this button,a mode is selected in a sequence that goes from AUTO,
COOL,DRY, FAN,and HEAT * , as the following:
FAN
HEAT *
COOL
AUTO
DRY

*Note:Only for models with heating function.
After energization, AUTO mode is defaulted. In AUTO mode, the set temperature will not
be displayed on the LCD, and the unit will automatically select the suitable operation
mode in accordance with the room temperature to make indoor room comfortable.
3 + :
Press this button to increase set temperature.Holding down button above 2 seconds rapidly
increases set temperature. In AUTO mode, set temperature is not adjustable.
4
Press this button to decrease set temperature.Holding
down button above 2 seconds rapidly
.
decreases set temperature. In AUTO mode, set temperature is not adjustable.
5 FAN :
Every press of FAN button changes the fan speed in the following order:
Auto

Low speed
6

Medium speed

High speed

:
Every pressof the button changes the swing angle in the follow order:

OFF

This remote controller is universal . If any command
the unit will carry out the command as

is sent out,

indicates the guide louver swings as:

Function and Control

:
7 TIMER ON
Press TIMER ON button, "ON" blinks and

disappears. Within 5 seconds, every press of + or button increases or decreases the ON time setting by 1 minutes. Holding down either buton
above 2.5 seconds rapidly changes the time setting by 1 minute and then by 10 minutes.
Within 5 seconds after setting, press TIMER ON to confirm. To cancel the TIMER ON
operation, press TIMER ON button.

8 TIMER OFF :
Press TIMER OFF button to set TIMER OFF. The setting method is the same as TIMER
ON.
9 CLOCK :
Press CLOCK button, the icon

blinks. During 5 seconds blinking, pressing + or - button adjusts
preset time. Holding down either button above 2 seconds increases or decreases the time by
1 minute every 0.5 second. If you are still pressing the button after 10 minutes increased or
decreased, the time will be changed by 10 minutes every 0.5 second. During blinking, press
the CLOCK button again, the icon
will be constantly displayed and it indicates that setting
has been finished.

X-FAN:
Pressing X-FAN button in COOL or DRY mode,the icon

is displayed and the indoor

fan will continue operation for 10 minutes in order to dry the indoor unit even though you
have turned off the unit.
After energization, X-FAN OFF is defaulted. X-FAN is not available in AUTO,FAN or
HEAT mode.
11

TEMP:

Press TEMP button,
(set temperature),
(indoor ambient temperature) and
(outdoor ambient temperatur) is displayed circularly. Not displaying icon is defaulted.
During operation of TEMP button, the set temperature is always displayed.
Note: Outdoor ambient temperature is only displayed for some models.

Function and Control

TURBO:
Press this button in COOL or HEAT mode turns on/off Turbo function. After TURBO
function is set, its icon is displayed. When switching operation mode or changing

fan speed, this function will be canceled automatically.
at super high fan speed. (This function is not applicable for some models).
13

SLEEP:

Press SLEEP button into SLEEP operation. Press SLEEP button again to cancel SLEEP.
This function only can be used in COOL, HEAT (applicable to heat pump unit) or DRY
mode, to maintain the most comfortable temperature for you.
14

LIGHT:

Press LIGHT button turns on/off the display's light. If the light is tunrned on ,

displayed. If the light is tunrned off

disappears.

3 and 4 About lock
Press "+ " and "-" buttons simultaneously to lock or unlock the keypad. If the remote
controller is locked,
is displayed. In this case, pressing any button,
blinks
three times.

2 and 4

About switch between fahrenheit and cenrigrade

At unit OFF, press "MODE " and" - " buttons simultaneously to switch between ć and ̧ .

Function and Control

Replacement of Batteries
1.Remove the battery cover plate from the rear of the remote controller.
(As shown in the figure)
2.Take out the old batteries.
3.Insert two new AAA1.5V dry batteries, and pay attention to the polarity.
4. Replace the battery cover plate.

ƾ Notes:
● When changing the batteries, do not use old or different batteries,
otherwise, it may cause malfunction of the wireless remote control.

● If the wireless remote controller will not be used for a long time, please
remove batteries to prevent damage from leaking batteries.
● The operation should be performed in its receiving range.
● It should be kept 1m away from the TV set or stereo sound sets.
● If the wireless remote controller does not operate normally, please take
the batteries out and replace them after 30 s. If still not operating properly,
replace the batteries.

Sketch map for
replacing batteries

Emergency Operation

When the wireless remote controller is lost
o r damaged, please use the manual switch
on the main unit. Operation will be in AUTO
mode and the temperature setting or fan
speed can not be changed .
The manual switch can be operated as follow:
Manual switch

ƽ To operate: Pressing the AUTO/STOP button,
the unit enters into AUTO mode.
The microcomputer will monitor the room
temperature to select the (COOL, HEAT, FAN)
mode automatically,to abtain the comfortable
effect.
ƽ To turn off: Press the AUTO/STOP button to
switch the unit off.

Fig.3

Function and Control

6.2 Description of Each Control Operation
1. Temperature Parameters
Indoor preset temperature (Tpreset )
Indoor ambient temperature (Tamb.)
2. Basic Functions
Once energized, in no case should the compressor be restarted within less than 3 minutes. In the situation that memory
function is available, for the first energization, if the compressor is at stop before de-energization, the compressor will be
started without a 3-minute lag; if the compressor is in operation before de-energization, the compressor will be started with
a 3-minute lag; and once started, the compressor will not be stopped within 6 minutes regardless of changes in room
temperature;
(1) Cooling Mode
Working conditions and process of cooling
When Tamb.≥ Tpreset, the unit will enter cooling operation, in which case the indoor fan, the outdoor fan and the compressor
will work and the indoor fan will run at preset speed.
When Tamb.≤ Tpreset -28 F, the compressor will stop, the outdoor fan will stop with a time lag of 30s, and the indoor fan will
run at preset speed.
When Tpreset-28 F40 , the indoor fan also will run at low speed; and after
1-minute operation at low speed, the indoor fan will be converted to operation at preset speed. Within 1-minute low speed
operation or 2-minute non-operation, if Ttube >108°F , the fan will run at present speed.
In the case of Tindoor amb.≥75°F : if Ttube ≤108°F, the indoor fan will run at low speed, and after one minute, the indoor fan
will be converted to preset speed. With in one-minute low speed operation, if Ttube >108°F , the indoor fan will be converted
to preset speed.
1
2 refers to, under initially heating mode, the indoor ambient temperature before the
Note: Tindoor amb.
command to start the compressor is performed according to the program, or after the unit is withdrawn from defrost, the
indoor ambient temperature before the defrost symbol is cleared.
Total current up and frequency down protection
If the total current I total ≤W, frequency rise will be allowed; if Itotal ≥X, frequency rise will not be allowed; if Itotal ≥Y, the
compressor will run at reduced frequency; and if Itotal ≥Z, the compressor will stop and the outdoor fan will stop with a time
lag of 30s.
(4) Fan Mode
Under the mode, the indoor fan will run at preset speed and the compressor, the outdoor fan, the four-way valve and the
electric heater will stop.
Under the mode, temperature can be set within a range of 61°F - 86°F.
(5) AUTO Mode
Working conditions and process of AUTO mode
Under AUTO mode, standard cooling temperature Tpreset is 77°F and standard heating temperature Tpreset is 64.4°F.
a.
Once energized, if Tamb.≤68°F, the unit will be started under heating mode; if 68°F < Tamb .< 77°F, the unit will run
under fan mode and the operation indicator lamp will be bright; and if Tamb.≥77°F, the unit will be started under cooling mode.

Function and Control

a. Under AUTO mode, if Tamb.≥Tpreset is detected, the unit will select to run under cooling mode, in which case implicit
preset temperature is 77°F; if T amb.≤Tpreset 28°F, the compressor will stop, the outdoor fan will stop with a time lag of 1
minute, and the indoor fan will run at preset speed; and if Tpreset –(28°F )< Tamb.< Tpreset , the unit will remain at its original
state.
b. Under AUTO mode, if Tamb
. ≤Tpreset +36°F is detected, the unit will select to run under heating mode, in which case
implicit preset temperature is 64°F ; if Tamb .≥Tpreset 41°F, the compressor will stop, the outdoor fan will stop with a time lag
of 1 minute, and the indoor fan will run under the mode of residue heat blowing; and if Tpreset +36°F < Tamb.< Tpreset +41°F, the
unit will remain at its original state. The cooling-only unit will run under fan mode.
c. Under AUTO mode, if 68°F< Tamb.< 77°F, the unit will remain at its original state.
2.Protection
a. In cooling operation, protection is the same as that under the cooling mode;
b. In heating operation, protection is the same as that under the heating mode;
c. When ambient temperature changes, operation mode will be converted preferentially. Once started, the compressor will
remain unchanged for at least 6 minutes.
(6) Common Protection Functions and Fault Display under COOL, HEAT, DRY and AUTO Modes
Overload protection
Ttube : measured temperature of outdoor heat exchanger undercooling mode; and measured temperature of indoor heat
exchanger under heating mode.
1) Cooling overload
a. If T tube ≤106°F , the unit will return to its original operation state.
b. If T tube ≥131°F, frequency rise is not allowed.
c. If T tube ≥136°F, the compressor will r un
at reduced frequency.
d. If T tube ≥144°F , the compressor will stop and the indoor fan will run at preset speed.
2) Heating overload
a. If T tube ≤106°F , the unit will return to its original operation state.
b. If T tube ≥131°F, frequency rise is not allowed.
c. If T tube ≥136°F, the compressor will run at reduced frequency.
d. If T tube ≥144°F , the compressor will stop and the indoor fan will blow residue heat and then stop.
Exhaust temperature protection of compressor
If exhaust temperature ≥ 208°F, frequency is not allowed to rise.
If exhaust temperature ≥ 217°F, the compressor will run at reduced frequency.
If exhaust temperature ≥ 230°F, the compressor will stop.
If exhaust temperature ≤ 194°F and the compressor has stayed at stop for at least 3 minutes, the compressor will resume its
operation.
Communication fault
If the unit fails to receive correct signals for durative 3 minutes, communication fault can be justified and the whole system
will stop.
Module protection
Under module protection mode, the compressor will stop. When the compressor remains at stop for at least 3 minutes, the
compressor will resume its operation. If module protection occurs six times in succession, the compressor will not be started
again.
Overload protection
If temperature sensed by the overload sensor is over 239°F, the compressor will stop and the outdoor fan will stop with a
time lag of 30 seconds. If temperature is below 203°F, the overload protection will be relieved.
If voltage on the DC bus is below 150V or over 420V, the compressor will stop and the outdoor fan will stop with a time
lag of 30 seconds. When voltage on the DC bus returns to its normal value and the compressor has stayed at stop for at least
3 minutes, the compressor will resume its operation.
Faults of temperature sensors

Function and Control

Designation of sensors

Faults
The sensor is detected to be open-circuited or short-circuited for successive 30
Indoor ambient temperature
seconds
The sensor is detected to be open-circuited or short-circuited for successive 30
Indoor tube temperature
seconds
The sensor is detected to be open-circuited or short-circuited for successive 30
Outdoor ambient temperature
seconds
The sensor is detected to be open-circuited or short-circuited for successive 30
Outdoor tube temperature
seconds, and no detection is performed within 10 minutes after defrost begins.
After the compressor has operated for 3 minutes, the sensor is detected to be
Exhaust
open-circuited or short-circuited for successive 30 seconds.
After the compressor has operated for 3 minutes, the sensor is detected to be
Overload
open-circuited or short-circuited for successive 30 seconds.
3. Other Controls
(1) ON/OFF
Press the remote button ON/OFF: the on-off state will be changed once each time you press the button.
(2) Mode Selection:
Press the remote button MODE, then select and show in the following ways: AUTO, COOL, DRY, FAN, HEAT, AUTO.
(3) Temperature Setting Option Button
Each time you press the remote button TEMP+ or TEMP-, the setting temperature will be up or down by 34°F. Regulating
Range: 61°F~86°F, the button is useless under the AUTO mode.
(4) Time Switch
You should start and stop the machine according to the setting time by remote controller.
(5) SLEEP State Control
a. When the air conditioner is under the mode of COOL, DRY, and the SLEEP mode has been set well, after the SLEEP
state keeps about 1 hour, the pre-setting T will raise 34°F, and it will raise 34°F again after 2 hours, so it raise 36°F in
2 hours, then it will run on at the setting temperature and fan speed.
b. When the air conditioner is under the mode of HEAT, and the Timer has been set well, after the SLEEP state keeps about
1 hour, the pre-setting T will reduce 34°F, and it will reduce 34°F again after 2 hours, so it reduce 36°F in 2 hours, then
it will run on at the setting temperature and wind speed.
c. The setting temperature keeps the sa me under the FAN mode and AUTO mode.
(6) Indoor Fan Control
The Indoor Fan can be set as HIGH, MED, LOW by remote controller, and the Indoor Fan will be respectively run at high,
medium, low speed. It will also be set as AUTO, and the Indoor Fan is as the following at the automatic fan speed.
Cooling mode: Tring ≥ T setting+ 2, high speed; Tsetting- 2 T ring T setting+ 2, medium speed; Tring ≤ Tsetting – 2, low speed.
Sending fan mode: : Tring T setting+ 4, high speed; Tsetting +2≤T ring ≤ T setting+ 4, medium speed; T ring
T setting+2, low
speed.
Moisture removal mode: force to be set as the low speed
Heating mode: T ring ≤ Tsetting+ 1 high speed; Tsetting+1 Tring T setting+ 5, medium speed; Tring ≥Tsetting+ 2, low speed.
(7) Buzzer Control
The buzzer will send a
sound when the air conditioner is powered up or received the information sent by the remote
control or there is a button input, the single tube cooler doesn’t receive the remote control ON signal under the mode of
heating mode.
(8) Auto button
If the controller is on, it will stop by pressing the button, and if the controller is off, it will be automatic running state by
pressing the button, swing on and light on, and the main unit will run based on the remote control if there is remote control
order.
(9) Up-and-Down Swinging Control
When power on, the up-and-down motor will firstly move the air deflector to o counter-clockwise, close the air outlet.
After starting the machine, if you don’t set the swinging function, heating mode and auto-heating mode, the up-and-down
air deflector will move to D clockwise; under other modes, the up-and-down air deflector will move to L1. If you set the
swing function when you start the machine, then the wind blade will swing between L and D. The air deflector has 7
swing states: Location L, Location A, Location B, Location C, Location D, Location L to Location D, stop at any
location between L-D (the included angle between L~D is the same). The air deflector will be closed at 0 location, and the
swing is effectual only on condition that setting the swing order and the inner fan is running. The indoor fan and
compressor may get the power when air deflector is on the default location.

Function and Control

Heating angle

Cooling angle

(10) Display
Operation pattern and mode pattern display
All the display patterns will display for a time when the unit is powered on, the operation indication icon will display in red under
standby status. When the machine is start by remote controller, the indication icon will light and display the current
operation mode (the mode light includes: Cooling, heating and dry). If you close the light key, all the display icons
will close.
Double-8 display
According to the different setting of remote control, the nixie lamp may display the current temperature (the temperature
scope is from 61°F to 86°F ) and indoor ambient temperature. The heating and air supply temperature will display 77°F
under auto-mode, the temperature will display 64 F under the heating mode, and the temperature will display H1 under the
defrosting mode.(If you set the fahrenheit temperature display, the nixie lamp will display according to fahrenheit
temperature)
(11) Protection function and failure display
E2: Freeze-proofing protection
E4: Exhausting protection
E5: Overcurrent protection
E6: Communication failure
E8: Overload protection
F1: Indoor ambient sensor start and short circuit (continuously measured failure in 30S)
F2: Indoor evaporator sensor start and short circuit (continuously measured failure in 30S)
F3: Outdoor ambient sensor start and short circuit (continuously measured failure in 30S)
F2: Outdoor condenser sensor start and short circuit (continuously measured failure in 30S, and don’t measure within 10
minutes after defrosted)
F5: Outdoor exhausting sensor start and short circuit (continuously measured failure in 30S after the compressor operated 3
minutes)
H3: Overload protection of compressor
H5: Module protection
PH: High-voltage protection
PL: Low-voltage protection
P1: Nominal cooling and heating
P2: Maximum cooling and heating
P3: Medium cooling and heating
P0: Minimum cooling and heating
(12) Drying Function
You may start or stop the dry function under the modes of cooling and dry at the starting status (The modes of
automatism, heating and air supply do not have dry function). When you start the dry function, after stop the
machine by pressing the switch button, you should keep running the infoor fans for 10 minutes under low air damper (The
swing will operate as the former status within 10 minutes, and other load is stopped), then stop the entire machine; When
you stop the dry function, press the switch button will stop the machine directly.
When you start the drying function, operating the drying button will stop the inner fans and close the guide louver.
(13) Memory function when interrupting the power supply
Memory content: mode, swing function, light, set temperature and wind speed.
After interrupted the power supply, the machine will start when recovering the power according to the memory content
automatically. If the last remote control command has not set the timed function, the system will remember the last remote
control command and operate according it. If the last remote control command has set timed function and the power supply
is interrupted before the timed time, the system will remember the timed function of the last remote control command, the
timed time will recounted form power on. If the last remote control command has set timed function, the time is out and the
system is start or stop according to the set time when the power supply is interrupted, the system will remember the
operation status before the power supply was interrupted, and do not carry out timed action; The timed clock will not be
remembered.

Function and Control

6.3 Detection of temperature sensor malfunction
Detect malfunctions of temperature sensor any time.
In defrosting period, the temperature sensor malfunction will not be detected. 5 min after finishing defrosting, the system begins to
detect the temperature sensor malfunction. In other times, the temperature sensor malfunction will be detected.

1. When short-circuit occurs to the temperature sensor for 30s:
The temperature sensor overheats. In this case, the complete unit will stop for protection. At the same time, the temperature protection
and temperature sensor malfunction will be shown.
2. When break-circuit occurs to the temperature sensor for 30s:
The unit will stop and the temperature sensor malfunction will be displayed

6.4 Frequency Control

When starting the compressor, or when conditions are varied due to the change of the room, the frequency must be initialized according
to the D value of the indoor unit and the Q value of the indoor unit.
Q value: Indoor unit output determined from indoor unit volume, air flow rate and other factors.

1. Pcontrol
Calculate
D value in each sampling time (20 seconds), and adjust the frequency according to its difference from the frequency
previously calculated.

2. Icontrol
If the operating frequency is not change more than a certain fixed time, adjust the frequency up and down according to the
obtaining the fixed D value.
When the
When the

D value,

D value is small...lower the frequency.
D value is large...increase the frequency.

3. Frequency management when other controls are functioning
When frequency is drooping;
Frequency management is carried out only when the frequency droops.
For limiting lower limit
Frequency management is carried out only when the frequency rises.

4. Upper and lower limit of frequency by PI control
The frequency upper and lower limits are set depending on indoor unit.
When low noise commands come from the indoor unit or when outdoor unit low noise or quiet commands come from indoor unit, the
upper limit frequency must be lowered than the usual setting.

6.5 3-minutes Standby
Prohibit to turn ON the compressor for 3 minutes after turning it off.(except when defrosting)

6.6 Compressor Protection Function
When turning the compressor from OFF to ON, the upper limit of frequency must be set as follows. (The function must not be used when
defrosting.)
Frequency

FCG 3

FCG 2

FCG 1
TCG1

48
240

TCG2
TCG3

360
180

FCG3
FCG2
FCG1

TCG 1sec

TCG 2sec

TCG 3sec

Time

Function and Control

6.7 Discharge Pipe Control
Outline
The discharge pipe temperature is used as the compressor’s internal temperature. If the discharge pipe temperature rises above a
certain level, the operating frequency upper limit is set to keep this temperature from going up further.

Detail
Divide the Zone
Stop zone
Drooping zone
Keep zone
Up zone
Heat exchanger
thermistor
temperature

Reset zone

Management within the Zones
Zone
Stop zone
Drooping zone
Keep zone
Return / Reset zone

Control contents
When the temperature reaches the stop zone, stop the compressor and
correct abnormality.
Start the timer, and the frequency will be drooping.
Keep the upper limit of frequency.
Cancel the upper limit of frequency.

6.8 Input Current Control
Outline
Detect an input current by the CT during the compressor is running, and set the frequency upper
limit from such input current.
In case of heat pump model, this control is the upper limit control function of the frequency which
takes priority of the lower limit of four way valve activating compensation.

Detail
The frequency control will be made within the following zones.
2 Hz drooping
1.0second after
rushing in the
drooping zone

After 2.5 seconds
Compressor stops

Stop zone

Drooping zone
Keep zone

3
Reset zone

When a “stop current” continues for 2.5 seconds after rushing on the stop zone, the compressor operation stops.
If a “drooping current” is continues for 1.0 second after rushing on the drooping zone, the frequency will be 2 Hz drooping.
Repeating the above drooping continues until the current rushes on the drooping zone without change.
In the keep zone, the frequency limit will remain.
In the return / reset zone, the frequency limit will be cancelled.

Limitation of current drooping and stop value according to the outdoor air temperature
1. In case the operation mode is cooling
* The current droops when outdoor air temperature becomes higher than a certain level (model by model).
2. In case the operation mode is heating
* The current droops when outdoor air temperature becomes higher than a certain level (model by model).

6.9 Freeze-up Protection Control
Outline

Function and Control

During cooling operation, the signals being sent from the indoor unit allow the operating frequency limitation and then prevent
freezing of the indoor heat exchanger. (The signal from the indoor unit must be divided into the zones as the followings.)

Detail
Conditions for Start Controlling
Judge the controlling start with the indoor heat exchanger temperature after 2 sec from operation start.

Control in Each Zone
Heat exchanger
thermistor temperature
A

Up zone

Keep zone

Drooping zone

Stop zone

Return/Reset zone

Function and Control

Frequency

PI control
0Hz
60sec.
50sec.

Compressor

Four way valve

600sec.

50sec.

ON
OFF

ON
OFF
5sec.

Fan

5sec.

ON
OFF

Electronic expansion
valve opening

450pps

350pps

450pps

Initial opening

6.12 Fan Control
Outline
Fan control is carried out according to the following priority.
1. Fan ON control for electric component cooling fan
2. Fan control when defrosting
3. Fan OFF delay when stopped
4. ON/OFF control in cooling operation
5. Tap control when drooping function is working
6. Fan control in forced operation
7. Fan control in indoor/outdoor unit silent operation
8. Fan control in powerful mode
9. Fan control in normal operation

Detail
Fan OFF Control when Stopped
* Fan OFF delay for 60 seconds must be made when the compressor is stopped.

Tap Control in indoor/outdoor unit silent operation
1. When Cooling Operation
When the outdoor air temperature is lower than 99°F, the fan tap must be set to L.
2. When Heating Operation
When the outdoor air temperature is higher than 39°F, the fan tap must be turned to L (only for heat pump model).

Installation Manual

7. Installation Manual
7.1 Notices for installation

Important Notices
The unit installation work must be done by qualified personnel according to the local
rules and this manual.
Before installating, please contact with local authorized maintenance center, if unit is
not installed by the authorized maintenance center, the malfunction may not solved,
due to discommodious contacts.
When removing the unit to the other place, please firstly contact with the authorized
Maintenance Center in the local area.
T he appliance must be positioned so that the plug is accessible
After pull out the power plug then make the appliance operation again，to avoid the
icing of outdoor unit damage axial flow fan，should electrify the appliance but not
operation for 4 hours for warm-up purpose(only for Heat Pump models).

Basic Requirements For Installation Position
Install in the following place may cause malfunction. If it is unavoidable contact with
service center please:
Place where strong heat sources, vapors, flammable gas or volatile object are emitted.
Place where high-frequency waves are generated by radio equipment, welders and
medical equipment.
Place where a lot of salinities such as coast exists.
Place where the oil (machine oil) is contained in the air.
Place where a sulfured gas such as the hot spring zones is generated.
Other place with special circumstance.

Indoor Unit Installation Position Selection
The air inlet and outlet vent should be far from the obstruction, make sure that the air
can be blown through the whole room.
Select a position where the condensing water can be easily drained out, and the place
is easily connected for outdoor unit.
Select a location where the children can not reach.
Can select the place where is strong enough to withstand the full weight and vibration o f
the unit. And will not increase the noise.
Be sure to leave enough space to allow access for routine maintenance. The height of the
installed location should be 8ft or more from the floor.
Select a place about 1m or more away from TVset or any other electric appliances.
Select a place where the filter can be easily taken out.
Make sure that the indoor unit installation should accord with installation dimension
diagram requirements.
Do not use the unit in the immediate surroundings of a laundry a bath a shower or a
swimming pool.

Installation Manual

Outdoor Unit Installation Position Selection
Select a location from which noise and outflow air emitted by unit will not inconvenience
neighbors, animals, plants.
Select a location where there should be sufficient ventilation.
Select a location where there should be no obstructions cover the inlet and outlet vent .
The location should be able to withstand the full weight and vibration of the outdoor unit
and permit safe installation.
Select a dry place, but do not expose under the direct sunlight or strong wind.
Make sure that the outdoor unit installation dimension should accord with installation
dimension diagram, convenient for maintenance, repair.
The height difference of connecting the tubing within 16ft, the length of connecting the
tubing within 32ft.
Select a place where it is out of reach for the children.
Select a place where will not block the passage and do not influence the city appearance.

Safety Requirements For Electric Appliances
1. The power supply should be used the rated voltage and AC exclusive circuit,
the power cable diameter should be satisfied.
2. Don't drag the power cable emphatically.
3. It should be reliably earthed, and it should be connected to the special earth device,
the installation work should be operated by the professional.
The air switch must have the functions of magnetic tripping and heat tripping, in order
to protect the short circuit and overloading.
4. The min. distance from the unit and combustive surface is 5ft.
5. The appliance shall be installed in accordance with national wiring regulations.
6. An all-pole disconnection switch having a contact separation of at least 3mm in all poles
should be connected in fixed wiring.

Make sure that the Live wire or Zero line as well as the ground wire in the family power
socket can not be wrong connected, there should be reliable and no short circuit in the
diagram.
wrong connection may cause fire.

Ground requirements
1. Air conditioner is type I electric appliance, thus please do conduct reliable earthing
measure.
2. The yellow-green two-color wire in air conditioner is earthing wire and cannot be used
for other propose. It cannot be cut off and be fix it by screw, otherwise it would cause
electric shock.
3. The earth resistance should accord to the National Criterion.
4. The user power must offer the reliable grounding terminal. Please don't connect the
earthing wire with the following place:
Tap water pipe.
Gas pipe.
Contamination pipe.
Other places that professional personnel consider them unreliable.
5. The model and rating values for fuses according the silk print on fuse cover or related
PCB board.

Installation Manual

7.2 Installation dimension diagram

Space to the ceiling
6 in.
side
above

Space to the wall
6 in. to side

6 in. to side

Space to the wall

ft.

m
fro

nt
f ro

6 ft.
from
bottom

Air outlet side
Space to the floor

Space to the obstruction

12 in. side

19 in. top

The dimensions of the space necessary for correct
installation of the appliance including the minimum
permissible distances to adjacent structures

Air inlet side

ck
ba
n.
i
12
Space to the wall

Space to the wall

12 in. side

nt
fro

Air outlet side

Installation Manual

7.3 Installing Indoor Unit
Installing Mounting Plate
1.Make the mounting plate completely level . As the water tray's oulet of the indoor unit is two-way type, the
indoor unit during installation should slightly slant to watert tray's outlet for smooth drainage of condensing
water.
2.Fix the mounting plate on the wall with screws.(Where is pre-covered with plastic granula)
3.Be sure that the mounting plate has been fixed firmly enough to withstand the weight of an adult of 60kg;
further more, the weight should be evenly shared by each screw.

Wall
Space
to the
wall
6 in
above

Mark on the middle of it

Gradienter

Wall
Space
to the
wall
6 in
above

Right

Left

2.5 in

Fig.5

(Rear piping hole)

2.5 in

(Rear piping hole)

Boring Piping Hole
Indoor
1.Make the piping hole (2.5 in) in the wall at a slight downward slant to the
outdoor side.

Wall pipe

2.Insert the piping-hole sleeve into the hole to prevent the connection piping
and wiring from being damaged when passing through the hole.

Outdoor
Seal pad

Ø55

Installing Drain Hose
1.For proper draining, the drain hose should be placed at a downward slant. Wrenched
2.Do not wrench or bend the drain hose or flood its end by water.
3.The long drain hose passing through indoor areas should
be wrapped with insulation material.

Bent

Flooded

Connecting Indoor and Outdoor Electric Wires
1.Open the front panel.
2.Remove the wiring cover as shown in Fig 6.
unit)
the the
holehole
in the
3.Make the power connection cord and signal control wire (only
(onlyffororheat
heatpump
pump
unitthrough
) through
in the
the back of indoor unit.
4.Reinstall the clamp and wiring cover.
5.Recovert he front panel.

Fig.6

Installation Manual

NOTE:
All interconnecting wiring between indoor and outdoor unit must be performed by a
a licenced electrical contractor
The electric wiring must be correctly connected.Improper connection may cause spare parts
malfunction.
Tighten the terminal screws adequately to prevent loosening.
After tightening the screws, slightly pull the wire and confirm whether it is firm or not.
Ensure the electrical connections are properly earthed to prevent electrical shocks.
Ensure all wiring connections are secure and the cover plates are reinstalled properly.Poor
installations that allow dust or moisture incursion may cause fire or electrocution.

Installing Indoor Unit
The piping can be output from right, right rear, left
or left rear.
When routing the piping and wiring from the left
or right side of indoor unit, cut off the tailings
from the chassis as necessary(As shown in Fig.7)
Cut off the tailings 1 when routing the wiring only;
Cut off the tailings 1 and tailings 2 when routing
both the wiring and piping.
Take out the piping from body case, wrap the piping,
power cords, drain hose with the tape and make them
through the piping hole. (As shown in Fig.8)
Hang the mounting slots of the indoor unit on the
upper hooks of the mounting plate and check if it is
firm enough.(As shown in Fig.9)
The height of the installed location should be 6ft
8ft
or more from the floor.

Gas side pipe

External connection
electric wire
Liquid side piping

Tailing 2
side piping
Tailing 1 Gas
insulation

Fig.7

Liquid side
Piping insulation

Finally wrap it
Water drainage pipe
with tape

Left
Left rear

Right
Right rear
Fixing hook
Mounting
plate

Fig.8
Mounting
plate

Fig.9

Installing Connection Pipe
Align the center of the piping flare with the relevant valve.
Screw in the flare nut by hand and then tighten the
nut with spanner and torque wrench referring to the
following:
Hex nut diameter

Tightening torque (lb ft)
11 ~ 14.7
22.8 ~ 25.8
36.9 ~ 40.6
44.3 ~ 47.9
51.6 ~ 55.3

Indoor unit piping

Spanner

Taper nut Piping

Torque
wrench

NOTE: Firstly connect the connection pipe to indoor unit, then to outdoor unit; pay attention
to the piping bending, do not damage the connection pipe; ensure the joint nut is adequately
tightened, otherwise it may cause leakage.

Installation Manual

7.4 Installing Outdoor Unit

Electric wiring
Disassemble the cable cross plate sub-assy on the outdoor unit right side plate.
Take off wire clamp. Connect and fix power connect
cord (for cooling and heating unit,connect and fix power
connect cord and signal control wire)to terminal of line
bank. Wiring should fit that of indoor unit.
Fix the power connection cable with wire clamp,
(for cooling and heating unit, use the wire clamp
to fix the power connection cable and the signal
control wire), then connect the corresponding
connector.
Ensure wire has been fixed well.
Install the cable cross plate sub-assy.

Cable Cross Plate sub-assy

For 115V Uints

Power

For 208~230V Uints

Power

NOTE:

*Note: Terminal 2 is the communication connection
Wrong wiring may cause spare parts malfunction.
After the cable fixed, make sure there should be a free space between the connection
and connection and fixing place on the lead wire.

Air purging and leakage test
1. Connect charging hose of manifold valve to charge end of low pressure
valve (both high/low pressure valves must be tightly shut).
2. Connect joint of charging hose to vacuum pump.
Liquid pipe
3. Fully open handle handle of Lo manifold valve.
Gas pipe
4. Open the vacuum pump to evacuate. At the beginning, slightly
Valve
cap
loosen joint nut of low pressure valve to check if there
is air coming inside. (If noise of vacuum pump has
been changed, the reading of multimeter is 0) Then
tighten the nut.
5. Keep evacuating for more than 15mins and make
5
sure the reading of multi-meter is

Vacuum
gauge

Vacuum pump

Fig.

6. Fully open high/low pressure valves.
7. Remove charging hose from charging end of low pressure valve.
8. Tighten bonnet of low-pressure valve. (As shown in Fig.10)
Condensate drainage of outdoor unit (not for cooling only)
The condensate and defrosting water formd during heating
in the outdoor unit can be properly discharged by drainage
pipe .
Installation method:set the drain connection in Ø 25 hole of the
chassis has been installed and then connect drainage pipe
with drain nozzle,so that condensate and defrosting water can
be properly discharged

Chassis
Drain
connection

Installation Manual

7.5 Check after Installation and Operation Test

Check after Installation
Items to be checked

Possible malfunction

Has it been fixed firmly?

The unit may drop, shake or emit noise.

Have you done the refrigerant leakage test?

It may cause insufficient cooling(heating)
capacity

Is heat insulation sufficient?

It may cause condensation and dripping.

Is water drainage satisfactory?

It may cause condensation and dripping.

Is the voltage in accordance with the rated
voltage marked on the nameplate?
Is the electric wiring and piping
connection installed correctly and securely?
Has the unit been connected to a secure
ground connection?

It may cause electric malfunction
or damage the product.
It may cause electric malfunction
or damage the part.
It may cause electrical leakage.

Is the power cord specified?

It may cause electric malfunction
or damage the part.

Are the inlet and outlet openings blocked?

It may cause insufficient cooling(heating)
capacity.

Is the length of connection pipes
and refrigerant capacity been recorded?

The refrigerant capacity is not accurate.

Operation Test
Before Operation Test
Do not switch on power before installation is finished completely.
Electric wiring must be connected correctly and securely.
Cut-off valves of the connection pipes should be opened.
All the impurities such as scraps and thrums must be cleared from the unit.
Operation Test Method
Switch on power and press "ON/OFF" button on the wireless remote controller to start
the operation.
Press MODE button to select the COOL, HEAT (Cooling only unit is not available),
FAN to check whether the operation is normal or not.

Installation Manual

7.6 Installation and Maintenance of Healthy Filter(Optional)
Installation of Healthy Filter

1. Lift up the front panel from the two ends
of it, as the arrow direction shown. Then
pull the air filter out. (as shown Fig.a)

Fig. a

2. Attach the healthy filter onto the air filter,
(as shown in Fig.b)..

Fig. b
Air filter
Healthy filter

3. Mount the air filter properly along the arrow
direction in Fig.c, and then close the panel cover.
Fig. c

Cleaning and Maintenance
Remove the healthy filter before cleaning and re-install it after clean
according to the installation instruction, but can't with brush or hard
things. After washing, be sure to shake off remaining water and dry
in the shade.

Service Life
The healthy filter commonly has its usage life time for one year under
normal condition. As for silver ion filter, it is invalid when its surface
becomes black (green).
ƽThis

supplementary instruction is provided for reference to the unit with
healthy filter. If the graphics provided herein is different from the physical
goods, the latter one shall prevail. The quantity of healthy filters shall be
based on the actual delivery.

Troubleshooting

9. Troubleshooting
9.1 Precautions before Performing Inspection or Repair
Be cautious during installation and maintenance. Do operation following the regulations to avoid electric shock and casualty or even death
due to drop from high altitude.
* Static maintenance is the maintenance during de-energization of the air conditioner.
For static maintenance, make sure that the unit is de-energized and the plug is disconnected.
* Dynamic maintenance is the maintenance during energization of the unit.
Before dynamic maintenance, check the electricity and ensure that there is ground wire on the site. Check if there is electricity on the
housing and connection copper pipe of the air conditioner with voltage tester. After ensure insulation place and the safety, the maintenance can be performed.
Take sufficient care to avoid directly touching any of the circuit parts without first turning off the power.
At times such as when the circuit board is to be replaced, place the circuit board assembly in a vertical position.
Normally,diagnose troubles according to the trouble diagnosis procedure as described below.(Refer to the check points in servicing
written on the wiring diagrams attached to the indoor/outdoor units.)

No.

Troubleshooting procedure

Precautions when inspecting the control section of the outdoor
unit:
A large-capacity electrolytic capacitor is used in the outdoor unit controller

Confirmation

Judgement by Flashing LED of Indoor/Outdoor Unit

How to Check simply the main part

(inverter).Therefore,if the power supply is turned off,charge(charging voltage DC280V to 380V)remains and discharging takes a lot of time.. After
turning off the power source,if touching the charging section before
discharging, an electrical shock may be caused.
Please open the outdoor unit after the unit is power off for 20min.

9.2 Confirmation
(1)Confirmation of Power Supply
Confirm that the power breaker operates(ON) normally;
(2)Confirmation of Power Voltage
Confirm that power voltage is AC
220-240±
115
± 10%. 10%.
If power voltage is not in this range, the unit may not operate normally.

9.3 Judgement by Flashing LED of Indoor/Outdoor Unit
*Trouble shooting is for cooling and Heat Pump models.

Troubleshooting

The breaker trips at once when it is set to
"ON".
Trip of breaker or blow
of fuse
The breaker trips in few
minutes
when it is set to "ON"

Measure insulation resistance to grou
nd to see if there is any leakage.

The circuit or the part of the air conditioner has
malfunction. They heat and break the insulation
and lead to short circuit or creepage. Measure
the insulation resistance or eliminate the malfunction one by one. If the breaker itself has
malfunction, then replace the breaker.

Check power supply circuit.

Air conditioner can not start up

No power

The air conditioner
does not react after
it is powered ( after
the plug is inserted,
the buzzer does
not sound and the
remote startup has
no response)

Power plug is not well plugged in and poor
connection

Check if the plug is properly plugged in
and make the loose contact firm.

Fuse of controller burnt out

Change controller fuse

The transformer connection is loose or has
bad contact or the transformer has
malfunction

Fasten the wiring; measure the output
voltage of the transformer, if it is
incorrect, change the transformer

Controller is broken

The remote controller signals (after it is
powered, the buzzer
will sound, unless it
has malfunction)

Check remote controller

Remote controller is short of power

Change batteries

Remote controller malfunction

First, press the manual switch button
AUTO,if there is no response,check
based on the above methods. If it runs
normally after pressing the button,check
again whether the installation position
and the connection wire of the reception
head is correct. If it is correct,then replace the receiver or the remote controller.

Receiver loose or poor connection

Receiver is broken

Power voltage is too low

Check the voltage. If it is lower than 10% of the rated
voltage, check the cause, improve the power supply
condition and add the stabilized voltage power supply.

Troubleshooting

Improper set of temperature

Adjust set temperature

If cooling (heating) load is

Check the forecasted load of cooling (heating)

proper
The refrigerant has leakage or is
insufficient

heck and fill the leakage, then
vacuumize it and supplement the refrigerant as required

Leakage between the high presMalfunction of
refrigerant
flow

sure and the low pressure inside the compressor
Malfunction of four-way valve

Local block of capillary
Poor COOL(HEAT) operation

Replace the compressor

Blockage of cooling system

Heat insulation for the connection
pipes of the indoor unit and the outdoor unit is bad.

Replace the four-way valve

Replace the capillary
Judge whether the system is blocked by
observing the condensation of evaporator and the pressure value of the high
pressure manometer and take measures
to deal with the system.

Make sure that heat insulation for the thick and thin pipes
is good. Heat insulation must also be provided for the
joint andthe exposed part of the copper pipe .

Block of outdoor heat exchanger

Clean the dust accumulated on the surface of
the heat exchanger.

Air filter were blocked

Clean the filter

To set the fan speed to high or
Fan speed was set too slow

Air circulation
is insufficient
Fan rotation speed becomes
low

The installation position of the
outdoor unit is not appropriate.

The outdoor temperature is too high.

The air tightness is not enough. People
come in and out too frequently. There
are heating devices indoors.

middle speed
Capacitor
damage

Replace the capaci-

Motor damage

Replace the motor

tor

Good ventilation must be provided for the
installation position of the outdoor unit.

Properly install the rainproof plate or the sunproof plate. If the
maximum cool air still can not meet the requirement, it is suggested to replace the air conditioner.

Keep certain air tightness indoors, try not to use
electricalappliance with large quantity of heat

Troubleshooting

The fan does not
run when it is set
to supply air.

In the cooling and
heating mode, the
compressor runs,
but the outdoor
fan does not run.

The indoor fan motor is burned or breaks or has the heat protector malfunction.

Replace the fan motor or the defective part.

The built-in heat protector of the motor
breaks frequently because the motor is
abnormal.

Replace the fan motor

Wrong connection

Make the correction connection based on the circuit
drawing.

The fan capacitor has open circuit or
is damaged

Replace the fan capacitor of the same type and same
specification.

The outdoor fan motor is damaged.

Replace the fan motor

Wrong connection

Make the correct connection based on the circuit
drawing.

The outdoor fan capacitor is damaged.

Replace the fan capacitor

Malfunction of compressor
When cooling or
heating, outdoor
fanruns,compressor
doesn't run.

The compressor is
too hot and leads to
the action of the
protector.

Replace the compressor

Breakage of running capacitor of
compressor

Replace the capacitor

The voltage is too low or too high.

Manostat is recommended.

Wrong wire connection

Connect the circuit diagram correctly

The protector itself has malfunction.

Use the multimeter to check whether the contact of
the compressor is on when it is not overheated. If it
is not on, then replace the protector

The refrigerant is not enough or is too
much.

Adjust the volume of the refrigerant

The capillary is blocked and the temperature rises.

Replace the capillary

The compressor does not run smoothly
or is stuck. The air discharge valve is
damaged
The protector itself has malfunction.

Replace the compressor

Replace the protector

The torque of the swing motor is not
enough
The swing fan
does not run.

wrong connection

First, check whether the connection is wrong. If no,
replace the parts

The controller is damaged IC2003 is
damaged, the swing relay can not close,
etc

Troubleshooting

In cool, heat mode,
the outdoor unit and
compressor will not
run.

Controller malfunction (IC200 3 b r o k e n , creepage of parallel
capacitor of relay loop,relay is broken etc.)

Change controller

Wire loose or wrong connection

Correctly wire according to the drawing

Improper setting of temperature

Adjust setting temp.

Drainage pipe blocked or broken

Change drainage pipe

Wrap of refrigerant pipe joint is not close

enough.

Re-wrap and make it tight.

Fan of indoor unit contacts other parts.

Adjust fan location.

Foreign object in indoor unit

Take out the foreign object.

Compressor shakes too much.

Adjust support washer of compressor, and
tighten loosen screws.

Touch of pipeline of outdoor unit

Separate the touching pipeline.

Touch of inner plates

1. Tighten connect screw.
2. Stick absorbing clay between plates.

Louver of outdoor unit touched outer
case.

Adjust location of louver.

Abnormal sound inside compressor

Change compressor

Water leakage

Abnormal sound
and shake

Troubleshooting

If malfunction occurs,corresponding code will display and the unit will resume normal until protection or
malfunction disappears.

Yellow indicator blinks for once

Yellow indicator blinks for twice
Yellow indicator blinks for 3 times

Compressor stars (normal)
Defrosting (normal display of indoor unit)
Anti-freezing protection (normal
display of indoor unit)

Yellow indicator blinks for 4 times

IPM protection

Yellow indicator blinks for 5 times

Overcurrent protection

Yellow indicator blinks for 6 times

Overload protection

Yellow indicator blinks for 7 times

Exhaust protection

Yellow indicator blinks for 8 times

Overlod protection of compresoor

Indicator display
of outdoor unit

Red indicator blinks for once

Cooling (dehumidify) or heating current
dropped frequency current.

Red indicator blinks for twice

r
Exhaust
temp.

Red indicator blinksfor 3 times

Tube temp.

Red indicator blinks for 4 times

T tube-in

Red indicator blinks for 5 times

Outdoor condenser temp. sensor mal.

Red indicator for 6 times

dropped frequency temp.

Outdoor ambient temp. sensor mal.

Red indicator blinks for 7 times

Outdoor exhaust temp. sensor mal.

Red indicator blinks for 8 times

Starting at temp. does not reach

Green indicator does not blink

Communication is abnormal

Troubleshooting

Name of running status

Red light

Green light

Indoor unit display

Compressor start

Blink once

Defrosting

Blink twice

Anti-freezing protection

Blink three times

IPM protection

Blink four times

Overcurrent protection

Blink five times

Overload protection

Blink six times

Air exhaust protection

Blink seven times

Overload protection

Blink eight times

Limited frequency (current)

Blink once

Limited frequency (Air exhaust)

Blink twice

Limited frequency (overload)

Blink three times

Limited frequency (anti-freezing)

Blink four times

Outdoor unit ambient sensor malfunction

Blink five times

Outdoor unit tube temp. sensor malfunction

Blink six times

Outdoor air exhaust sensor malfunction

Blink seven times

Achieve the temperature of unitstartsup

Blink eight times

Communication is normal

Communication malfunction

Overload sensor malfunction

Low voltage protection

Blink twelve times

High voltage protection

Blink thirteen times

Indoor ambient sensor malfunction

Indoor tube temperature sensormalfunction

Normal cooling or norminal heating

Max. cooling or max. heating

Interim cooling or interim heating

Min. cooling or Min. heating

YELLOW-LED4

Yellow light

Blink continuously
OFF

Blink nine times

GREEN-LED2

RED-LED3

Troubleshooting

Analysis or processing of some of the malfunction display:
1. Compressor discharge protection
Possible reasons: shortage of refrigerant; blockage of air filter; poor ventilation or air flow short pass for condenser;
the system has noncondensing gas (such as air, water etc.); blockage of capillary assy (including filter); leakage
inside four-way valve causes incorrect operation; malfunction of compressor; malfunction of protection relay;
malfunction of discharge sensor; outdoor temperature too high.
Processing method: refer to the malfunction analysis in the above section.
2. Low voltage over current protection
Possible reas on: Sudden drop of supply voltage.
3. Communication malfunction
Processing method:Ch eck if communica tion signal cable is connected reliably.
4. Sensor openo rs hort circuit
Processing method: Check whether sensor is normal, connected with the corresponding position on the
controller and if damage lf lead wire is found.
5. Compressor overload protection
Possible reasons: insufficient or too much refrigrant; blockage of capillary and increase of suction temp.;
improper running of compressor, burning in or stuck of bearing, damage of discharge valve;
malfunctioning of protector.
Processing method: adjust refrigerant amount; replace the capillary; replace the compressor; use
universal meter to check if the contactor of compressor is fine when it is not overheated, if not replace
the protector.
6. System malfunction
i.e.overload protection.When tube temperature (Check the temperature of outdoor heat exchanger
when cooling and check the temperature of indoor heat exchanger when heating) is too high,
protection will be activated.
Possible reasons: Outdoor temperature is too high when cooling; insufficient outdoor air circulation;
refrigerant flow malfunction.
please refer to the malfunction analysis in the previous section for handling method .
7. IPM module protection
Processing method:Once the module malfunction happens,if it persists for a long time and can not be self- canceled,
cut off the power and turn off the unit,and then re-energize the unit again after about 10 min. After repeating the
procedure for sever times, if the malfunction still exists, replace the module.

Troubleshooting

9.4 How to Check simply the main part
Main Check Points:
Units of 115V: Use AC voltmeter to check wether the voltage between terminal L and N on the wiring board is 115V AC
Units of 115V: Whether the reactor ( L) is correctly connected? Whether the connection is loose or fallen? Whether the reactor
(L) is damaged ?
Fault diagnosis process:
Switch on the unit
and wait 1 minute

Use DC voltmeter
to measure the
voltage on the two
ends of electrolytic
capacitor (test3)

Voltage higher than 103.5V?
For 115V Units
Voltage higher than 187V?
For 208~230V Units
N

Fault with the
voltage testing
circuit on control panel AP1

Replace the
control panel
AP1

Measure the AC voltage between
terminal L and N on wiring board
XT

Voltage within 103.5~126.5V?
For 115V Units

Switch off the
power and repair
the supply power
to restore the voltage to 103.5~126.5
VVAC For 115V
Units

Re-energize
and switch
on the unit

If the fault is
eliminated?

Switch off the power and wait 20 minutes;
or use DC voltmeter to measure the voltage on the use DC voltmeter to measure
the voltage on the two ends of capacitor
(test3), until the voltage is lower than 20V

Check the
connection of reactor
(L in the Electrical
Wiring Diagram)

If the wiring of
reactor L is normal?

Connect the reactor L according to
Electrical Wiring
Diagram

Re-energize
and switch on
the unit

Replace the control
panel AP1

End

If the fault
is eliminated?

Troubleshooting

Mainly detect:
Whether the connection between control panel AP1 and compressor COMP is secure? Whether loose? Whether the connection
is in correct order?
Whether the voltage input of the machine is within normal range? (Use AC voltmeter to measure the voltage
between terminal L and N on the wiring board XT)
Whether the compressor coil resistance is normal? Whether the insulation of compressor coil against the copper tube
is in good condition?
Whether the working loads of the machine are too high? Whether the radiation is good?
Whether the charge volume of refrigerant is correct?

Troubleshooting
Fault diagnosis process:
Energize and
switch on

IPM protection
occurs after the
machine has run for
a period of time?

Use AC voltmeter
to measure the
voltage between
terminal L and N
on the wiring
board XT)

If the voltage
between terminal L
and N on wiring
board XT is within
210VAC~250VAC?

Check the supply
voltage and
restore it to
210VAC~250VAC

Y
Start and run the
unit. Before
protection occurs,
use DC voltmeter to
measure the voltage
between the two
ends of electrolytic
capacitor on control
panel AP1 (test3)

Voltage between
the two ends of
electrolytic
capacitor (test3) is
higher than 250V

Please confirm:
1. If the indoor and
outdoor heat
exchangers are
dirty? If they are
obstructed by other
objects which affect
the heat exchange
of indoor and
outdoor unit.
2. If the indoor and
outdoor fans are
working normally?
3. If the environment
temperature is too
high, resulting in
that the system
pressure is too high
and exceeds the
permissible range?
4. If the charge
volume of
refrigerant is too
much, resulting in
that the system
pressure is too
high?
5. Other conditions
resulting in that the
system pressure
becomes too high.

The connection
of capacitor C2
is loose.

Stop the unit and
disconnect the power
supply. Wait 20 minutes,
or use DC voltmeter to
measure the voltage
between the two ends of
capacitor C2, until the
voltage is lower than 20V

If capacitor
C2 is failed?

Replace the capacitor
C2. Then, energize
and start the unit.

Replace the
control panel AP1

If there is any
abnormality
described above?

Replace the
control panel AP1

Connect the control panel
AP1 and compressor
COMP correctly according
to the Electrical Wiring
Diagram. Then, energize
and start the unit.

If the
resistance is
normal?

If the unit can
work
normally?

Replace the
compressor
COMP

Resistance higher
than 500MΩ?

N
Replace the
control panel
AP1

END

If the unit can
work
normally?

Take corrective actions
according to Technical
Service Manual, and
then energize and start
the unit.

N
Use ohmmeter to
measure the resistance
between the two
terminals of compressor
COMP and copper tube.

Reconnect the
capacitor C2 according
to Electrical Wiring
Diagram. Then,
energize and start the
unit.

N
Remove the wires
on the two ends of
capacitor C2. Then,
use
capacitance
meter to measure
the capacitor C2.
Verify as per the
Parameters Sheet.

Use ohmmeter to
measure the resistance
between the three
terminals on compressor
COMP, and compare the
measurements with the
compressor resistance on
Service Manual.

If the unit can
work
normally?

N
Stop the unit and
disconnect the power
supply. Then, check
the connection of
capacitor C2
according to Electrical
Wiring Diagram.

Refer to the
Electrical Wiring
Diagram and check
if the connection
between AP1 and
COMP is loose and if
the connection order
is correct.

If the connection
between AP1 and
COMP is unsecure
or the connection
order is wrong?

If the unit can
work
normally?

Troubleshooting

Mainly detect:
Is outdoor ambient temperature in normal range?
Are the outdoor and indoor fans operating normally?
Is the heat dissipation environment inside and outside the unit is good?

Overheat and high
temperature protection

Is outdoor ambient temperature higher than 53?

Normal protection, please operate it after the
outdoor ambient temperature is normalized.

20 minutes after the complete
unit is powered off.

Is heat dissipation of the indoor unit
and outdoor unit abnormal?

Improve the heat
dissipation environment
of the unit

Does the outdoor fan work normally?

1. Check if the fan terminal O FAN
is connected correctly
2. Resistance between any two
terminals is measure by an ohm
gauge and should be less than 1K
Ohm.

Y
Replace the fan
capacitor C1
Replace the control panel

AP1
Replace the
outdoor fan

End

Troubleshooting

Mainly detect:
Whether the compressor wiring is connected correct?
Is time for compressor stopping enough?
Is compressor broken?

Power on the unit

Is stop time of the compressor
longer than 3 minutes?

Restart it up after 3 minutes

Y
Does startup fail?

Are the wires for the compressor connected
correctly? Is connection sequence right?

Connect the wires as per the
connection diagram

Replace the control panel AP1

N
If the fault is eliminated?

N
Replace the
compressor

End

Troubleshooting

Mainly detect:
Whether the unit voltage is too high?
Whether the work voltage is too low?

Out of step occurs once the
unit is powered on.

Out of step occurs in
operation

Is stop time of the
compressor longer than
3 minutes?

Is the outdoor fan working
normally?

Is the outdoor unit blocked
by foreign objects?
Are the wires for the compressor connected
correctly? Is connection sequence right?
Is the connection made in clockwise
direction?

Replace the
control panel AP1

Connect the
wires correctly
Replace the control
panel AP1
If the fault is eliminated?

If the fault is eliminated?

Replace the
compressor
Replace the
compressor

End
End

Check if the fan terminal
O FAN is connected correctly

Replace the fan
capacitor C1

Replace the
outdoor fan
Remove foreign objects

Troubleshooting

Mainly detect:
Whether the electronic expansion valve is connected well or not? Is electronic expansion valve damaged?
Is refrigerant leaked?

20 minutes after the
complete unit is
powered off

Is the terminal FA for the
electronic expansion valve
connected correctly?

Connect the
wires correctly

Resistances between the first four pins
close to the terminal hole and the fifth
pin are almost the same, less than 100
ohm.

Replace the electronic
expansion valve

If the fault is eliminated?

Replace the
control panel
AP1

If the fault is eliminated?

Coolant leakage, refilling
the coolant

End

Troubleshooting

Mainly detect:
Check if the reactor (L) of the outdoor unit and the PFC capacitor are broken
The failure diagnosis process is as follows:

Start

Check wiring of the
reactor (L) of the
outdoor unit and the
PFC capacitor

Whether there is any
damage or
short-circuit?

Replace it as per the
wiring diagram and
reconnect the wires

If the fault is eliminated?

Remove the PFC capacitor
and measure resistance
between the two terminals.

Is the resistance around zero?

The capacitor is
short circuited and
the capacitor
should be replaced

Restart the unit

If the fault is eliminated?

N
Disconnect the terminals for the
reactor and measure the resistance
between the two terminals of the
reactor by an ohm gauge

Whether there is any damage
or short-circuit?

Replace the reactor

Restart the unit

If the fault is eliminated?

Replace the control
panel AP1

End

Troubleshooting

Mainly detect:
Detect the indoor and outdoor units connection wire and indoor and outdoor units inside wiring is connect
well or not, if is there any damage?
Is there any damage for the indoor unit mainboard communication circuit? Is communication circuit damaged?
The flow chart for malfunction detect:

Start

Did the equipment operate
normally before the failure
occurs?

Check the wiring of the indoor and
outdoor units with reference to the
wiring diagram
Check wiring inside of
the indoor and outdoor
units

Is the connection right?
N
N

The AP1 voltage
detection circuit
is at fault

Correctly connect the
corresponding wires for
the indoor and outdoor
units with reference to
the wiring diagram

Are wires broken?

If the fault is eliminated?

Check the communication
circuit of the outdoor unit
If the fault is eliminated?

The communication
circuit is abnormal

Replace the main board
˄AP1˅of the outdoor unit

If the fault is eliminated?
N

Replace the main board
of the indoor unit
Y

End

Troubleshooting

Start

Measure voltage at the
Test 10 position as
shown in the diagram
with a voltmeter

Value jumping

N
Y
Measure voltage at the
Test 15 position as
shown in the diagram
with a voltmeter

Value jumping

Fault with
outdoor unit

Measure voltage at the
Test 11 position as
shown in the diagram
with a voltmeter

Value jumping

Y
Measure voltage at the
Test 12 position as
shown in the diagram
with a voltmeter

Value jumping

Y
The communication
circuit of the outdoor
unit is normal

End

Troubleshooting

(9) Flow chart for outdoor communitcation circuit detecting:
7HVWWKHYROWDJHEHWZHHQ1SRLQWRIZLULQJERDUGDQGFRPPXQLFDWLRQFDEOHZLWKXQLYHUVDOPHWHU7KHYROWDJHVKDOOEH
YDULDEOH2WKHUZLVHLWPLJKWEHPDOIXQFWLRQRIPDLQERDUGRILQGRRUXQLWRUPDOIXQFWLRQRIPDLQERDUGRIRXWGRRUXQLWRU
ZURQJZLUHFRQQHFWLRQRILQGRRUDQGRXWGRRUXQLW3OHDVHHQVXUHWKDWWKHUHLVQRPDOIXQFWLRQRIPDLQERDUGRILQGRRUXQLWRU
ZURQJZLUHFRQQHFWLRQRILQGRRUDQGRXWGRRUXQLW$IWHUUHPRYLQJWKHPDOIXQFWLRQRILQGRRUXQLWUHPRYHWKHPDOIXQFWLRQRI
RXWGRRUXQLW
7HVWWKHYROWDJHRISLQDQGSLQRI8ZLWKXQLYHUVDOPHWHUYROWDJHRIERWKVLGHVRI57KHYROWDJHVKRXOGEH
YDULDEOH7HVW7HVWWKHYROWDJHRISLQDQGSLQRI8ZLWKXQLYHUVDOPHWHUYROWDJHRIERWKVLGHVRI57KH
YROWDJHVKRXOGEHYDULDEOH7HVW2WKHUZLVHWKHUHLVPDOIXQFWLRQRIPDLQERDUGRIRXWGRRUXQLW

7HVWWKHYROWDJHRISLQDQGSLQRI8ZLWKXQLYHUVDOPHWHUYROWDJHRIERWKVLGHVRI57KHYROWDJHVKRXOG
EHYDULDEOHWHVW7HVWWKHYROWDJHRISLQDQGSLQRI8ZLWKXQLYHUVDOPHWHUYROWDJHRIERWKVLGHVRI&7KH
YROWDJHVKRXOGEHYDULDEOHWHVW2WKHUZLVHWKHUHLVPDOIXQFWLRQRIPDLQERDUGRIRXWGRRUXQLW
7HVWWKHYROWDJHEHWZHHQSLQRI5ZKLWHDQGSLQRI87KHYROWDJHVKRXOGEHYDULDEOH7HVWYROWDJHEHWZHHQ
SLQRI5ZKLWHDQGSLQRI8ZLWKXQLYHUVDOPHWHU7KHYROWDJHVKRXOGEHYDULDEOH2WKHUZLVHWKHUHLVPDOIXQFWLRQRI
PDLQERDUGRIRXWGRRUXQLW

Troubleshooting

Troubleshooting Guide
Appendix 1: form for indoor/outdoor unit's ambient sensor numerical value of resistance
Temp.

Resistance

Temp.

(°F)

-2
0
1
3
5
7
9
10
12
14
16
18
19
21
23
25
27
28
30
32
34
36
37
39
41
43
45
46
48
50
52
54
55
57
59
61
63
64
66

68
70
72
73
75
77
79
81
82
84
86
88
90
91
93
95
97
99
100
102
104
106
108
109
111
113
115
117
118
120
122
124
126
127
130
131
133
135
136

Resistance

Temp.

(°F)

138
140
142
144
145
147
149
151
153
154
156
158
160
162
163
165
167
169
171
172
174
176
178
180
181
183
185
187
189
190
192
194
196
198
199
202
203
205
207

Resistance

Temp.

(°F)

208
210
212
214
216
217
219
221
223
225
226
228
230
232
234
235
237
239
241
243
244
246
248
250
252
253
255
257
259
261
262
264
266
268
270
271
273
275
277

Resistance

Troubleshooting

Troubleshooting Guide
Appendix 2: form for indoor/outdoor unit's tube temperature sensor numerical value of resistance
Temp.

Resistance

Temp.

Resistance

Temp.

(°F)

-2
0
1
3
5
7
9
10
12
14
16
18
19
21
23
25
27
28
30
32
34
36
37
39
41
43
45
46
48
50
52
54
55
57
59
61
63
64
66

68
70
72
73
75
77
79
81
82
84
86
88
90
91
93
95
97
99
100
102
104
106
108
109
111
113
115
117
118
120
122
124
126
127
130
131
133
135
136

138
140
142
144
145
147
149
151
153
154
156
158
160
162
163
165
167
169
171
172
174
176
178
180
181
183
185
187
189
190
192
194
196
198
199
202
203
205
207

Resistance

Temp.

(°F)

Resistance

208
210
212
214
216
217
219
221
223
225
226
228
230
232
234
235
237
239
241
243
244
246
248
250
252
253
255
257
259
261
262
264
266
268
270
271
273
275
277
65

Troubleshooting

Troubleshooting Guide
Appendix 3: form for indoor/outdoor unit's air exhaust temperature sensor numerical value of resistance
Temp.

Resistance

Temp.

Resistance

Temp.

Resistance

Temp.

(°F)

-2
0
1
3
5
7
9
10
12
14
16
18
19
21
23
25
27
28
30
32
34
36
37
39
41
43
45
46
48
50
52
54
55
57
59
61
63
64
66

68
70
72
73
75
77
79
81
82
84
86
88
90
91
93
95
97
99
100
102
104
106
108
109
111
113
115
117
118
120
122
124
126
127
130
131
133
135
136

138
140
142
144
145
147
149
151
153
154
156
158
160
162
163
165
167
169
171
172
174
176
178
180
181
183
185
187
189
190
192
194
196
198
199
202
203
205
207

208
210
212
214
216
217
219
221
223
225
226
228
230
232
234
235
237
239
241
243
244
246
248
250
252
253
255
257
259
261
262
264
266
268
270
271
273
275
277

Resistance

Troubleshooting

9.5 2-way, 3-way Valve Appearance
2-way Valve (Liquid Side)

Hexagonal wrench (4mm)
Flare nut

3-way Valve (Gas Side)

Valve cap
Open position
Flare nut
Closed position

Open position
Closed position
To
piping
connection

To
piping
connection
To outdoor unit

Works
Shipping

Air purging
(Installation)

Operation

Service Service
port cap port

To outdoor unit

Shaft position

Service port

Closed
(with valve cap)

Closed
(with cap)

Closed
(clockwise)

Open
(with vacumm pump)

Open
(with valve cap)

Closed
(with cap)

Closed
(clockwise)

Open
Open
(counter-clockwise) (connected manifold
gauge)

Pumping down
(Transfering)
Evacuation
(Servicing)

Open

Open
(with charging
cylinder)

Gas charging
(Servicing)

Open

Open
(with charging
cylinder)

Pressure check
(Servicing)

Open

Open
(with charging cylinder)

Gas releasing
(Servicing)

Open

Open
(with charging cylinder)

Troubleshooting

Liquid side

Indoor unit

Clsed

Outdoor unit

2-way
valve

Gas side
Clsed
3-way
valve

Vacuum pump
Lo
OPEN

* Procedure
(1)Connect the charge hose from the manifold valve to the service port of the gas side packed valve.
(2)Connect the charge hose to the port of the vacuum pump.
(3) Open fully the low pressure side handle of the gauge manifold valve.
(4)Operate the vacuum pump to begin evacuating. Perform
evacuating for about 15 minutes if the piping length is 20 meters
(15 minutes for 20 meters) (assuming a pump capacity of 27
liters per minute). Confirm that the compound pressure gauge
reading is –101 kPa (–76 cmHg).
(5)Close the low pressure valve handle of gauge manifold.
– Check the flare connections for gas leakage.
(6)Use torque wrench to tighten the service port nut to a torque
of 1.8kg.cm.
(7)Set the 3-way valve to the back seat.
(8)Mount the valve stem nuts to the 2-way and 3-way valves.
(9)Check for gas leakage.
– At this time, especially check for gas leakage from the 2-way
and 3-way valve’s stem nuts, and from the service port nut.

CAUTION:
If gas leakage are discovered in step 5 above, take the
following mesures :
If the gas leaks stop when the piping connections are
tightened further, continue working from step 6. If the
gas leaks do not stop when the connections are
retightened, repair the location of the leak, discharge
all of the gas through the service port, and then recharge
with the specified amount of gas from a gas cylinder.

Troubleshooting

Liquid side

Indoor unit

2-Way
valve

Open

Outdoor unit

Gas side

Closed
3-Way
valve

Lo
CLOSE

Purge the air

• Procedure
(1) Confirm that both the 2-way and 3-way valves are set to
the open position.
– Remove the valve stem caps and confirm that the valve stems

(7) Immediately set the 3-way valve to the closed position.
– Do this quickly so that the gauge ends up indicating 3 to 5kg/
cm2g.

are in the raised position.
– Be sure to use a hexagonal wrench to operate the valve stems.
(8) Disconnect the charge set, and mount the 2-way and 3(2) Operate the unit for 10 to 15 minutes.

way valve’s stem nuts and the service port nut.
– Use torque wrench to tighten the service port nut to a torque of
1.8 kg.m.
– Be sure to check for gas leakage.

(3) Stop operation and wait for 3 minutes, then connect the
charge set to the service port of the 3-way valve.
– Connect the charge hose with the push pin to the service port.

(4) Air purging of the charge hose.
– Open the low-pressure valve on the charge set slightly to air
purge from the charge hose.

(5) Set the 2-way valve to the closed position.

(6) Operate the air conditioner at the cooling cycle and stop it
when the gauge indicates 1kg/cm2g.

Troubleshooting

Liquid side

Indoor unit

3-Way
valve

Closed

Outdoor unit

Gas side

Closed
3-Way
valve

Gas cylinder

Lo
R410A

OPEN

• Procedure
(1) Confirm that both the liquid side valve and the gas side
valve are set to the closed position.

(6) Disconnect the charge set and the gas cylinder, and set
the Liquid side and Gas side valves to the open position.
– Be sure to use a hexagonal wrench to operate the valve stems.

(2) Connect the charge set and a gas cylinder to the service
port of the Gas side valve.
– Leave the valve on the gas cylinder closed.

(8) Mount the valve stem nuts and the service port nut.
– Use torque wrench to tighten the service port nut to a torque of
1.8 kg.m.
– Be sure to check for gas leakage.

(3) Air purging.
– Open the valves on the gas cylinder and the charge set. Purge
the air by loosening the flare nut on the liquid side valve approximately 45o or 3 seconds then closing it for 1 minute;repeat
3 times.
– After purging the air, use a torque wrench to tighten the flare
nut on liquid side valve.

(4) Check for gas leakage.
– Check the flare connections for gas leakage.

(5) Discharge the refrigerant.
– Close the valve on the gas cylinder and discharge the refrigerant until the gauge indicates 3 to 5 kg/cm2g.

CAUTION: Do not leak the gas in the air during Air Purging.

Troubleshooting

Balance Refrigerant of the 3-way Valve
(Gas leakage)

Liquid side

Indoor unit

Outdoor unit
3-Way
valve

Open

Gas side

3-Way
valve

Open

Lo
OPEN

• Procedure
(1) Confirm that both the 2-way and 3-way valves
are set to the back seat.
(2) Connect the charge set to the 3-way valve’s
port.
– Leave the valve on the charge set closed.
– Connect the charge hose to the service port.

(3) Open the valve (Lo side) on the charge set and
discharge the refrigerant until the gauge indicates 0 kg/cm2G.
– If there is no air in the refrigerant cycle (the
pressure when the air conditioner is not running
is higher than 1 kg/cm2G), discharge the refrigerant until the gauge indicates 0.5 to 1
kg/cm2G. if this is the case, it will not be necessary to apply a evacuatin.
– Discharge the refrigerant gradually; if it is discharged too suddenly, the refrigeration oil will
also be discharged.

Troubleshooting

Evacuation
(All amount of refrigerant leaked)

Liquid side

Indoor unit

Outdoor unit
3-Way
valve

Open

Gas side

3-Way
valve

Open

Vacuum pump
Lo
OPEN

• Procedure
(1) Connect the vacuum pump to the center hose
of charge set center hose
(2) Evacuation for approximately one hour.
– Confirm that the gauge needle has moved
toward -76 cmHg (vacuum of 4 mmHg or less).

(3) Close the valve (Lo side) on the charge set,
turn off the vacuum pump, and confirm that
the gauge needle does not move (approximately 5 minutes after turning off the vacuum
pump).
(4) Disconnect the charge hose from the vacuum
pump.
– Vacuum pump oil.
If the vacuum pump oil becomes dirty or
depleted, replenish as needed.

Troubleshooting

Gas Charging
(After Evacuation)
Liquid side

Indoor unit

3-Way
valve

Open

Outdoor unit

Gas side

Open
3-Way
valve

Check valve

Charging
cylinder
Lo
(1)

OPEN

• Procedure
\

(1) Connect the charge hose to the charging
cylinder.
– Connect the charge hose which you dis-connected from the vacuum pump to the valve at
the bottom of the cylinder.
– If you are using a gas cylinder, also use a
scale and reverse the cylinder so that the system can be charged with liquid.
(2) Purge the air from the charge hose.
– Open the valve at the bottom of the cylinder
and press the check valve on the charge set to
purge the air. (Be careful of the liquid refrigerant). The procedure is the same if using a gas
cylinder.
(3) Open the valve (Lo side on the charge set and
charge the system with liquid refrigerant.
– If the system can not be charged with the specified amount of refrigerant, it can be charged
with a little at a time (approximately 150g each
time) while operating the air conditioner in the
cooling cycle; however, one time is not sufficient, wait approximately 1 minute and then
repeat the procedure (pumping down-pin).

This is different from previous procedures.
Because you are charging with liquid refrigerant
from the gas side, absolutely do not attempt to
charge with larger amounts of liquid refrigerant
while operating the air conditioner.

(4) Immediately disconnect the charge hose from
the 3-way valve’s service port.
– Stopping partway will allow the gas to be discharged.
– If the system has been charged with liquid
refrigerant while operating the air conditioner
turn off the air conditioner before disconnecting
the hose.
(5) Mount the valve stem nuts and the service
port nut.
– Use torque wrench to tighten the service port
nut to a torque of 1.8 kg.m.
– Be sure to check for gas leakage.

Removal Procedure

10. Removal Procedure
10.1 Removal Procedure of Indoor Unit
Warning

Be sure to wait 10 minutes or more after turning
off all power supplies before disassembling work.

Image shown here is indicative only. Actual product
you receive may differ.
front panel
1. Remove front panel
Open the front panel and slightly pull it to remove it.
filter

2. Remove guide louver
Push out the shaft sleeve and slightly bend the
guide louver to remove it.

guide louver

3. Remove electirc box cover
Unscrew the screw fixing the electric box cover to
remove it.

screw

Removal Procedure

clasps

temp. sensor

4. Remove front case
Unscrew the 6 tapping screws fixng the front panel
and turn the front case backward to remove it.

screws

clasps

5. Remove electric box
Unscrew the 2 screws fixing the electric box
Pull out the wiring terminal of motor and then un-

screw

screw the 3 screws fixing electric box.Lift the electric box to remove it.

6. Remove evaporator
Unscrew the screws on the rear pipe cardplate
and then remove the cardplate.
screw

clasp

Removal Procedure

screws

7. Remove motor and cross flow fan
Unscrew the screws fixing the motor press plate
of motor and then the screws connecting the motor and cross flow fan to separate and remove
them.

screws

screw

Removal Procedure

10.2 Removal Procedure of Outdoor Unit
Cable Cross Plate sub-assy

1. Remove top cover and the Cable Cross Plate subassy Unscrew the screw on the handle and pull the
Cable Cross Plate sub-assy forcibly downwards to re-

top cover

move it. Unscrew the 3 screws fixing the top cover to
remove it.

screws

2. Remove cabinet

screws

Unscrew the 4 screws fixing the cabinet to remove it.
cabinet

3. Remove front panel
Unscrew the 5 screws fixing the front panel and
pull out the front panel to remove it.
(If it's 108-230V, there are 6 screws need to be unscrewed
because there are one more power transformer.)

front panel

screws

Removal Procedure

4. Remove electric box cover
Unscrew the 2 screws fixing the electiric box. Pull
theelectric box upwards and unplug the plug-in
line to remove the electric box.
screws

5. Remove axial flow fan
Unscrew the nut and remove the washer fixing the
axial flow fan and then pull it out.

nut and washer

axial flow fan

6.Remove 4-way valve
Wrap the 4-way valve with wet cloth and unsolder
the 4 weld spots of the 4-way valve to remove it.

4-way valve

weld spots

Removal Procedure

7. Remove electronic expannsion valve
Unsolder the weld spots of eletronic expansion
valve connecting with other pipelines to remove it.
electronic expannsion valve

8. Remove gas valve and liquid valve
Unscrew the 2 screws fixing the gas valve and
unsolder the weld spots of gas valve and suction
pipe to remove the gas valve.
Unscrew the 2 screws fixing the liquid valve and

liquid valve
screws

unsolder the weld spots of liquid valve and suction pipe to remove the liquid valve.
gas valve

9 . Remove compressor
Unsolder the 2 weld spots of the compressor and
unscrew the 3 feet nuts and remove the washeres fixing the compressor to remove it.

compressor foot

SPLIT TYPE ROOM AIR CONDITIONER - WALL MOUNTED
SYSTEM COMPONENTS

MW09C1H / MW12C1H Exploded Diagram

MW09C1H Parts List

NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41

FPN
69700100
69700101
69700102
69700103
69700104
69700105
69700106
69700107
69700108
69700109
69700110
69700111
69700112
69700113
69700114
69700115
69700116
69700117
69700118
69700119
69700120
69700121
69700122
69700123
69700124
69700125
69700126
69700127
69700128
69700129
69700130
69700131
69700132
69700133
69700134
69700135
69700136
69700137
69700138
69700139
69700140

Part Description
Filter Sub-Assy
Front Case Sub-Assy
Front Case
Evaporator Assy
Evaporator Support
Guide Louver
Axile Bush (guide louver)
Rear Grill
Helicoid tongue
Air Louver 2
Air Louver 1
Left Axile Bush
Bearing cushion rubber base
O-Gasket sub-assy of Bearing
Cross Flow Fan
Water Tray Glue Plug
Wall Mounting Frame
MotorPressPlate
Pipe Clamp
Drainage Pipe
Cable Cross Plate
Rear Case assy
Fan Motor
Motor MP24AA
Crank
Display Board
Ambient Temperature Sensor
Transformer
Electric Box Assy
Electric Box
4-bit Terminal Board
Main Board
Jumping Connector
Tube Sensor (20K black)
Electric Box Cover1
Shield cover of Electric Box sub-assy
Remote Control
Electric Box Cover2
Screw Cover
Front panel D1
Front Panel Sub-Assy

MW12C1H Parts List

NO.
1
2
3
4
5
6
7

FPN
69700100
69700141
69700142
69700103
69700104
69700105
69700106

Part Description
Filter Sub-Assy
Front Case Sub-Assy
Front Case
Evaporator Assy
Evaporator Support
Guide Louver
Axile Bush (guide louver)

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41

69700108
69700109
69700110
69700111
69700112
69700113
69700114
69700115
69700116
69700117
69700118
69700119
69700120
69700121
69700122
69700123
69700124
69700125
69700126
69700127
69700143
69700129
69700130
69700131
69700144
69700133
69700134
69700135
69700145
69700137
69700138
69700139
69700140

Helicoid tongue
Air Louver 2
Air Louver 1
Left Axile Bush
Bearing cushion rubber base
O-Gasket sub-assy of Bearing
Cross Flow Fan
Water Tray Glue Plug
Wall Mounting Frame
MotorPressPlate
Pipe Clamp
Drainage Pipe
Cable Cross Plate
Rear Case assy
Fan Motor
Motor MP24AA
Crank
Display Board
Ambient Temperature Sensor
Transformer
Electric Box Assy
Electric Box
4-bit Terminal Board
Main Board
Jumping Connector
Tube Sensor (20K black)
Electric Box Cover1
Shield cover of Electric Box sub-assy
Remote Controller
Electric Box Cover2
Screw Cover
Front panel D1
Front Panel Sub-Assy

SPLIT TYPE ROOM AIR CONDITIONER - WALL MOUNTED
SYSTEM COMPONENTS

31
30

MR09C1H Exploded Diagram

MR09C1H Parts List

NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

FPN
69700000
69700001
69700002
69700003
69700004
69700005
69700006
69700007
69700008
69700009
69700010
69700011
69700012
69700013
69700014
69700015
69700016
69700017
69700018
69700019
69700020
69700021
69700022
69700023
69700024
69700025
69700026
69700027
69700028
69700029
69700030

Part Description
Mesh Enclosure
Cabinet
Axial-flow Fan
Motor FW30G-ZL
Reactor Support Assy
Choke Plug
Compressor Gasket
Compressor C-6RZ110H1A
Electric Expansion Valve Sub-Assy
Cut-off Valve (1/4)
Cut-off Valve (3/8)
Valve Support
Cable Cross Plate Assy
Right Side Plate Assy
Wire cover
Magnet Coil
Temperature Sensor for Discharge Gas
Tube Sensor (20K black)
Discharge Tube
Inhalation Tube
Overload Protector
Sensor
Rear Grill
Condenser Assy
Clapboard Sub-Assy
Top Cover Plate
Motor suport spot welding sub-assy
Electric box cover sub-assy
Main Board
Electric Box Assy
Terminal Board

SPLIT TYPE ROOM AIR CONDITIONER - WALL MOUNTED
SYSTEM COMPONENTS

MR12C1H Exploded View

MR12C1H Parts List

NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27

FPN
69700000
69700031
69700002
69700003
69700017
69700016
69700021
69700032
69700033
69700019
69700025
69700034
69700035
69700015
69700036
69700011
69700027
69700029
69700020
69700006
69700037
69700010
69700009
69700007
69700038
69700039
69700028

Part Description
Mesh Enclosure
Front Panel
Axial-flow Fan
Motor FW30G-ZL
Tube Sensor (20K black)
Temperature Sensor for Discharge Gas
Sensor
Motor suport spot welding sub-assy
Condenser Assy
Inhalation Tube
Top Cover Plate
Rear Grill
Discharge Tube
Magnet Coil
Right Side Plate
Valve Support
Electric box cover sub-assy
Electric Box Assy
Overload Protector
Compressor Gasket
Drainage Plug
Cut-off Valve (3/8)
Cut-off Valve (1/4)
Compressor C-6RZ110H1A
Clapboard Sub-Assy
Chassis Sub-assy
Main Board

FRIEDRICH AIR CONDITIONING CO.
10001 Reunion Place, Ste. 500, San Antonio, TX 78216
(210) 546-0500 877-599-5665 x 261 FAX (210) 546-0630
Email: tac@friedrich.com
www.friedrich.com
Printed in the U.S.A.

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Friedrich Air Conditioner Mr09C1H Users Manual DSS_Manual_05 05 11

MR12C1H to the manual 5db71477-e6e6-414f-9331-8b3cbeffb404

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