Toshiba Ras 10Gavp E Service Manual

2014-12-13

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FILE NO. A05-008

SERVICE MANUAL

SPLIT TYPE
Indoor Unit

Outdoor Unit

RAS-B10GKVP-E
RAS-B13GKVP-E
RAS-B16GKVP-E

RAS-10GAVP-E
RAS-13GAVP-E
RAS-16GAVP-E

R410A
PRINTED IN JAPAN, Nov.,2005 ToMo

CONTENTS
1. SAFETY PRECAUTIONS .......................................................................... 3
2. SPECIFICATIONS ..................................................................................... 5
3. REFRIGERANT R410A ............................................................................. 7
4. CONSTRUCTION VIEWS ........................................................................ 15
5. WIRING DIAGRAM .................................................................................. 17
6. SPECIFICATIONS OF ELECTRICAL PARTS ......................................... 18
7. REFRIGERANT CYCLE DIAGRAM ........................................................ 19
8. CONTROL BLOCK DIAGRAM ................................................................ 22
9. OPERATION DESCRIPTION ................................................................... 24
10. INSTALLATION PROCEDURE ................................................................ 47
11. HOW TO DIAGNOSE THE TROUBLE ...................................................... 60
12. HOW TO REPLACE THE MAIN PARTS ................................................... 82
13. EXPLODED VIEWS AND PARTS LIST ................................................. 101
Cord Heater Installation Work ........................................................ Appendix-1

–2–

1. SAFETY PRECAUTIONS
For general public use
Power supply cord of outdoor unit shall be more than 1.5 mm 2 (H07RN-F or 245IEC66) polychloroprene
sheathed flexible cord.
•
•
•
•

Read this “SAFETY PRECAUTIONS” carefully before servicing.
The precautions described below include the important items regarding safety. Observe them without fail.
After the servicing work, perform a trial operation to check for any problem.
Turn off the main power supply switch (or breaker) before the unit maintenance.

CAUTION
New Refrigerant Air Conditioner Installation
• THIS AIR CONDITIONER ADOPTS THE NEW HFC REFRIGERANT (R410A) WHICH DOES NOT
DESTROY OZONE LAYER.
R410A refrigerant is apt to be affected by impurities such as water, oxidizing membrane, and oils because
the working pressure of R410A refrigerant is approx. 1.6 times of refrigerant R22. Accompanied with the
adoption of the new refrigerant, the refrigeration machine oil has also been changed. Therefore, during
installation work, be sure that water, dust, former refrigerant, or refrigeration machine oil does not enter into
the new type refrigerant R410A air conditioner circuit.
To prevent mixing of refrigerant or refrigerating machine oil, the sizes of connecting sections of charging
port on main unit and installation tools are different from those used for the conventional refrigerant units.
Accordingly, special tools are required for the new refrigerant (R410A) units. For connecting pipes, use new
and clean piping materials with high pressure fittings made for R410A only, so that water and/or dust does
not enter. Moreover, do not use the existing piping because there are some problems with pressure fittings
and possible impurities in existing piping.

CAUTION
TO DISCONNECT THE APPLIANCE FROM THE MAIN POWER SUPPLY
This appliance must be connected to the main power supply by a circuit breaker or a switch with a contact
separation of at least 3 mm.
The installation fuse (25A D type
) must be used for the power supply line of this air conditioner.

DANGER
• ASK AN AUTHORIZED DEALER OR QUALIFIED INSTALLATION PROFESSIONAL TO INSTALL/MAINTAIN THE AIR CONDITIONER.
INAPPROPRIATE SERVICING MAY RESULT IN WATER LEAKAGE, ELECTRIC SHOCK OR FIRE.
• TURN OFF MAIN POWER SUPPLY BEFORE ATTEMPTING ANY ELECTRICAL WORK. MAKE SURE
ALL POWER SWITCHES ARE OFF. FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK.

DANGER: HIGH VOLTAGE
The high voltage circuit is incorporated.
Be careful to do the check service, as the electric shock may be caused in case of touching parts
on the P.C. board by hand.
• CORRECTLY CONNECT THE CONNECTING CABLE. IF THE CONNECTING CABLE IS INCORRECTLY CONNECTED, ELECTRIC PARTS MAY BE DAMAGED.
• CHECK THAT THE EARTH WIRE IS NOT BROKEN OR DISCONNECTED BEFORE SERVICE AND
INSTALLATION. FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK.

–3–

• DO NOT INSTALL NEAR CONCENTRATIONS OF COMBUSTIBLE GAS OR GAS VAPORS. FAILURE
TO FOLLOW THIS INSTRUCTION CAN RESULT IN FIRE OR EXPLOSION.
• TO PREVENT THE INDOOR UNIT FROM OVERHEATING AND CAUSING A FIRE HAZARD, PLACE
THE UNIT WELL AWAY (MORE THAN 2 M) FROM HEAT SOURCES SUCH AS RADIATORS, HEAT
REGISTORS, FURNACE, STOVES, ETC.
• WHEN MOVING THE AIR-CONDITIONER FOR INSTALLATION IN ANOTHER PLACE, BE VERY CAREFUL NOT TO ALLOW THE SPECIFIED REFRIGERANT (R410A) TO BECOME MIXED WITH ANY
OTHER GASEOUS BODY INTO THE REFRIGERATION CIRCUIT. IF AIR OR ANY OTHER GAS IS
MIXED IN THE REFRIGERANT, THE GAS PRESSURE IN THE REFRIGERATION CIRCUIT WILL
BECOME ABNORMALLY HIGH AND IT MAY RESULT IN THE PIPE BURSTING AND POSSIBLE PERSONNEL INJURIES.
• IN THE EVENT THAT THE REFRIGERANT GAS LEAKS OUT OF THE PIPE DURING THE SERVICE
WORK AND THE INSTALLATION WORK, IMMEDIATELY LET FRESH AIR INTO THE ROOM. IF THE
REFRIGERANT GAS IS HEATED, SUCH AS BY FIRE, GENERATION OF POISONOUS GAS MAY
RESULT.

WARNING
• Never modify this unit by removing any of the safety guards or bypass any of the safety interlock
switches.
• Do not install in a place which cannot bear the weight of the unit. Personal injury and property
damage can result if the unit falls.
• After the installation work, confirm that refrigerant gas does not leak.
If refrigerant gas leaks into the room and flows near a fire source, such as a cooking range, noxious gas
may generate.
• The electrical work must be performed by a qualified electrician in accordance with the Installation
Manual. Make sure the air conditioner uses an exclusive circuit.
An insufficient circuit capacity or inappropriate installation may cause fire.
• When wiring, use the specified cables and connect the terminals securely to prevent external
forces applied to the cable from affecting the terminals.
• Be sure to provide grounding.
Do not connect ground wires to gas pipes, water pipes, lightning rods or ground wires for telephone cables.
• Conform to the regulations of the local electric company when wiring the power supply.
Inappropriate grounding may cause electric shock.

CAUTION
• Exposure of unit to water or other moisture before installation may result in an electrical short.
Do not store in a wet basement or expose to rain or water.
• Do not install in a place that can increase the vibration of the unit. Do not install in a place that can amplify
the noise level of the unit or where noise or discharged air might disturb neighbors.
• To avoid personal injury, be careful when handling parts with sharp edges.
• Perform the specified installation work to guard against an earthquake.
If the air conditioner is not installed appropriately, accidents may occur due to the falling unit.

For Reference:
If a heating operation would be continuously performed for a long time under the condition that the outdoor
temperature is 0°C or lower, drainage of defrosted water may be difficult due to freezing of the bottom plate,
resulting in a trouble of the cabinet or fan.
It is recommended to procure an antifreeze heater locally for a safe installation of the air conditioner.
For details, contact the dealer.

–4–

2. SPECIFICATIONS
2-1. Specifications
RAS-B10GKVP-E/RAS-B13GKVP-E/RAS-B16GKVP-E, RAS-10GAVP-E/RAS-13GAVP-E/RAS-16GAVP-E
Unit model

Indoor
Outdoor

Cooling capacity
Cooling capacity range
Heating capacity
Heating capacity range
Power supply
Indoor
Electric
characteristics
Outdoor

COP
Operating
noise

Indoor
Outdoor
Unit model
Dimension

Indoor unit

(kW)
(kW)
(kW)
(kW)
Operation mode
Running current
Power consumption
Power factor
Operation mode
Running current
Power consumption
Power factor
Starting current
(Cooling/Heating)
High
(Cooling/Heating)
Medium (Cooling/Heating)
Low
(Cooling/Heating)
(Cooling/Heating)
Height
Width
Depth

(A)
(W)
(%)
(A)
(W)
(%)
(A)
(dB•A)
(dB•A)
(dB•A)
(dB•A)

(mm)
(mm)
(mm)
(kg)
(W)
(Cooling/Heating) (m³/h)

Net weight
Fan motor output
Air flow rate
Unit model
Height
Dimension Width
Depth
Net weight
Outdoor unit
Motor output
Compressor Type
Model
Fan motor output
Air flow rate
(Cooling/Heating)
Type
Liquid side
Indoor unit
Gas side
Liquid side
Piping
Outdoor unit
connection
Gas side
Maximum length
Maximum chargeless length
Maximum height difference
Name of refrigerant
Refrigerant
Weight
Power supply
Wiring
connection
Interconnection
Indoor (Cooling/Heating)
Usable temperature range
Outdoor (Cooling/Heating)
Installation plate
Wireless remote controller
Batteries
Remote controller holder
Zeolite-plus filter
Indoor unit Mounting screw
Accessory
Remote controller holder
mounting screw
Plasma pure filter
Installation manual
Owner’s manual
Drain nipple
Outdoor unit
Water-proof rubber cap

(mm)
(mm)
(mm)
(kg)
(W)

(W)
(m³/h)

(m)
(m)
(m)
(kg)

(°C)
(°C)

RAS-B10GKVP-E
RAS-B13GKVP-E
RAS-B16GKVP-E
RAS-10GAVP-E
RAS-13GAVP-E
RAS-16GAVP-E
2.5
3.5
4.5
0.5–3.5
0.6–4.5
0.8–5.0
3.2
4.2
5.5
0.6–5.8
0.6–6.6
0.8–7.8
1 Ph/50Hz/220–240 V, 1 Ph/60Hz/220 V
Cooling
Heating
Cooling
Heating
Cooling
Heating
0.15
0.15
0.15
0.15
0.15
0.15
30
30
30
30
30
30
87
87
87
87
87
87
Cooling
Heating
Cooling
Heating
Cooling
Heating
2.48/2.37/2.26 3.25/3.10/2.96 4.25/4.06/3.89 4.52/4.31/4.13 6.45/6.17/5.90 7.07/6.76/6.47

520
680
890
945
1350
1480
95
95
95
95
95
95
3.40/3.25/3.11
4.67/4.46/4.28
7.22/6.91/6.62
4.55/4.51
3.80/4.31
3.26/3.64
42/43
43/44
45/45
33/34
34/35
36/36
27/27
27/27
29/29
46/47
48/50
49/50
RAS-B10GKVP-E
RAS-B13GKVP-E
RAS-B16GKVP-E
250
250
250
790
790
790
215
215
215
9
9
9
30
30
30
550/610
560/640
640/660
RAS-10GAVP-E
RAS-13GAVP-E
RAS-16GAVP-E
550
550
550
780
780
780
290
290
290
35
37
37
750
750
750
Twin rotary type with DC-inverter variable speed control
DA111A1F-20F1
DA111A1F-20F1
DA111A1F-20F1
43
43
43
2150/2150
2410/2410
2410/2410
Flare connection
Flare connection
Flare connection
Ø6.35
Ø6.35
Ø6.35
Ø9.52
Ø9.52
Ø12.7
Ø6.35
Ø6.35
Ø6.35
Ø9.52
Ø9.52
Ø12.7
25
25
25
15
15
15
10
10
10
R410A
R410A
R410A
0.82
0.96
0.96
3 Wires : includes earth (Outdoor)
4 Wires : includes earth
21–32/0–28
21–32/0–28
21–32/0–28
5–43/–15–24
5–43/–15–24
5–43/–15–24
1
1
1
1
1
1
2
2
2
1
1
1
1
1
1
6 (Ø4 × 25L)
6 (Ø4 × 25L)
6 (Ø4 × 25L)
2 (Ø3.1 × 16L)

2 (Ø3.1 × 16L)

1
1
1
1
2

• The specifications may be subject to change without notice for purpose of improvement.

–5–

2-2. Operation Characteristic Curve

RAS-B10GKVP-E
RAS-B13GKVP-E
RAS-B16GKVP-E

4
3

• Conditions
Indoor : DB 27˚C/WB 19˚C
Outdoor : DB 35˚C
Air flow : High
Pipe length : 7.5m
Voltage : 230V

1
0
0

RAS-B10GKVP-E
RAS-B13GKVP-E
RAS-B16GKVP-E

Current (A)

40
60
80
100
Compressor speed (rps)

• Conditions
Indoor : DB 20˚C
Outdoor : DB 7˚C/WB 6˚C
Air flow : High
Pipe length : 7.5m
Voltage : 230V

120

0
0

140

100
40
60
80
Compressor speed (rps)

120

140

2-3. Capacity Variation Ratio According to Temperature

110

120

100

Capacity ratio (%)

RAS-B10GKVP-E
RAS-B13GKVP-E
RAS-B16GKVP-E

• Conditions
Indoor : DB27˚C/WB19˚C
Indoor air flow : High
Pipe length : 7.5m

0
–15

50
32 33 34 35 36 37 38 39 40 41 42 43 44 45 46

• Conditions
Indoor : DB 20˚C
Indoor air flow : High
Pipe length : 7.5m

–10

–5

Outdoor temp. (˚C)

* Capacity ratio : 100% = 2.5 kW (RAS-B10GKVP-E)
3.5 kW (RAS-B13GKVP-E)
4.5 kW (RAS-B16GKVP-E)

–6–

3. REFRIGERANT R410A
This air conditioner adopts the new refrigerant HFC
(R410A) which does not damage the ozone layer.
The working pressure of the new refrigerant R410A
is 1.6 times higher than conventional refrigerant
(R22). The refrigerating oil is also changed in
accordance with change of refrigerant, so be careful
that water, dust, and existing refrigerant or refrigerating oil are not entered in the refrigerant cycle of the
air conditioner using the new refrigerant during
installation work or servicing time.
The next section describes the precautions for air
conditioner using the new refrigerant. Conforming to
contents of the next section together with the
general cautions included in this manual, perform
the correct and safe work.

6. When an air conditioning system charged with a
large volume of refrigerant is installed in a small
room, it is necessary to exercise care so that,
even when refrigerant leaks, its concentration
does not exceed the marginal level.
If the refrigerant gas leakage occurs and its
concentration exceeds the marginal level, an
oxygen starvation accident may result.
7. Be sure to carry out installation or removal
according to the installation manual.
Improper installation may cause refrigeration
trouble, water leakage, electric shock, fire, etc.
8. Unauthorized modifications to the air conditioner
may be dangerous. If a breakdown occurs
please call a qualified air conditioner technician
or electrician.
Improper repair’s may result in water leakage,
electric shock and fire, etc.

3-1. Safety During Installation/Servicing
As R410A’s pressure is about 1.6 times higher than
that of R22, improper installation/servicing may
cause a serious trouble. By using tools and materials exclusive for R410A, it is necessary to carry out
installation/servicing safely while taking the following
precautions into consideration.
1. Never use refrigerant other than R410A in an air
conditioner which is designed to operate with
R410A.
If other refrigerant than R410A is mixed, pressure
in the refrigeration cycle becomes abnormally
high, and it may cause personal injury, etc. by a
rupture.
2. Confirm the used refrigerant name, and use tools
and materials exclusive for the refrigerant R410A.
The refrigerant name R410A is indicated on the
visible place of the outdoor unit of the air conditioner using R410A as refrigerant. To prevent
mischarging, the diameter of the service port
differs from that of R22.
3. If a refrigeration gas leakage occurs during
installation/servicing, be sure to ventilate fully.
If the refrigerant gas comes into contact with fire,
a poisonous gas may occur.
4. When installing or removing an air conditioner, do
not allow air or moisture to remain in the refrigeration cycle. Otherwise, pressure in the refrigeration cycle may become abnormally high so
that a rupture or personal injury may be caused.
5. After completion of installation work, check to
make sure that there is no refrigeration gas
leakage.
If the refrigerant gas leaks into the room, coming
into contact with fire in the fan-driven heater,
space heater, etc., a poisonous gas may occur.

3-2. Refrigerant Piping Installation
3-2-1. Piping Materials and Joints Used
For the refrigerant piping installation, copper pipes
and joints are mainly used. Copper pipes and joints
suitable for the refrigerant must be chosen and
installed. Furthermore, it is necessary to use clean
copper pipes and joints whose interior surfaces are
less affected by contaminants.

1. Copper Pipes
It is necessary to use seamless copper pipes
which are made of either copper or copper alloy
and it is desirable that the amount of residual oil
is less than 40 mg/10 m. Do not use copper
pipes having a collapsed, deformed or discolored
portion (especially on the interior surface).
Otherwise, the expansion valve or capillary tube
may become blocked with contaminants.
As an air conditioner using R410A incurs pressure higher than when using R22, it is necessary
to choose adequate materials.
Thicknesses of copper pipes used with R410A
are as shown in Table 3-2-1. Never use copper
pipes thinner than 0.8 mm even when it is
available on the market.

–7–

Table 3-2-1 Thicknesses of annealed copper pipes
Thickness (mm)
Nominal diameter

Outer diameter (mm)

R410A

R22

1/4

6.35

0.80

3/8

9.52

0.80

1/2

12.70

0.80

5/8

15.88

1.00

2. Joints
For copper pipes, flare joints or socket joints are used. Prior to use, be sure to remove all contaminants.
a) Flare Joints
Flare joints used to connect the copper pipes cannot be used for pipings whose outer diameter exceeds
20 mm. In such a case, socket joints can be used.
Sizes of flare pipe ends, flare joint ends and flare nuts are as shown in Tables 3-2-3 to 3-2-6 below.
b) Socket Joints
Socket joints are such that they are brazed for connections, and used mainly for thick pipings whose
diameter is larger than 20 mm.
Thicknesses of socket joints are as shown in Table 3-2-2.

Table 3-2-2 Minimum thicknesses of socket joints

Nominal diameter

Reference outer diameter of
copper pipe jointed (mm)

Minimum joint thickness
(mm)

1/4

6.35

0.50

3/8

9.52

0.60

1/2

12.70

0.70

5/8

15.88

0.80

3-2-2. Processing of Piping Materials
When performing the refrigerant piping installation, care should be taken to ensure that water or dust does not
enter the pipe interior, that no other oil than lubricating oils used in the installed air-water heat pump is used,
and that refrigerant does not leak. When using lubricating oils in the piping processing, use such lubricating oils
whose water content has been removed. When stored, be sure to seal the container with an airtight cap or any
other cover.

1. Flare processing procedures and precautions
a) Cutting the Pipe
By means of a pipe cutter, slowly cut the pipe so that it is not deformed.
b) Removing Burrs and Chips
If the flared section has chips or burrs, refrigerant leakage may occur.
Carefully remove all burrs and clean the cut surface before installation.
c) Insertion of Flare Nut

–8–

d) Flare Processing
Make certain that a clamp bar and copper
pipe have been cleaned.
By means of the clamp bar, perform the flare
processing correctly.
Use either a flare tool for R410A or conventional flare tool.
Flare processing dimensions differ according
to the type of flare tool. When using a conventional flare tool, be sure to secure “dimension A” by using a gauge for size adjustment.

ØD
A

Fig. 3-2-1 Flare processing dimensions

Table 3-2-3 Dimensions related to flare processing for R410A
A (mm)
Nominal
diameter

Outer
diameter
(mm)

Thickness
(mm)

Conventional flare tool

Flare tool for R410A
clutch type

Clutch type

Wing nut type

1/4

6.35

0.8

0 to 0.5

1.0 to 1.5

1.5 to 2.0

3/8

9.52

0.8

0 to 0.5

1.0 to 1.5

1.5 to 2.0

1/2

12.70

0.8

0 to 0.5

1.0 to 1.5

2.0 to 2.5

5/8

15.88

1.0

0 to 0.5

1.0 to 1.5

2.0 to 2.5

Table 3-2-4 Dimensions related to flare processing for R22
A (mm)
Nominal
diameter

Outer
diameter
(mm)

Thickness
(mm)

Conventional flare tool

Flare tool for R22
clutch type

Clutch type

Wing nut type

1/4

6.35

0.8

0 to 0.5

0.5 to 1.0

1.0 to 1.5

3/8

9.52

0.8

0 to 0.5

0.5 to 1.0

1.0 to 1.5

1/2

12.70

0.8

0 to 0.5

0.5 to 1.0

1.5 to 2.0

5/8

15.88

1.0

0 to 0.5

0.5 to 1.0

1.5 to 2.0

Table 3-2-5 Flare and flare nut dimensions for R410A
Dimension (mm)

Nominal
diameter

Outer diameter
(mm)

Thickness
(mm)

Flare nut width
(mm)

1/4

6.35

0.8

9.1

9.2

6.5

3/8

9.52

0.8

13.2

13.5

9.7

1/2

12.70

0.8

16.6

16.0

12.9

5/8

15.88

1.0

19.7

19.0

16.0

–9–

Table 3-2-6 Flare and flare nut dimensions for R22
Dimension (mm)

Nominal
diameter

Outer diameter
(mm)

Thickness
(mm)

Flare nut width
(mm)

1/4

6.35

0.8

9.0

9.2

6.5

3/8

9.52

0.8

13.0

13.5

9.7

1/2

12.70

0.8

16.2

16.0

12.9

5/8

15.88

1.0

19.7

19.0

16.0

3/4

19.05

1.0

23.3

24.0

19.2

45˚

6˚

to 4

43˚

to 4

5˚

Fig. 3-2-2 Relations between flare nut and flare seal surface

2. Flare Connecting Procedures and Precautions
a) Make sure that the flare and union portions do not have any scar or dust, etc.
b) Correctly align the processed flare surface with the union axis.
c) Tighten the flare with designated torque by means of a torque wrench. The tightening torque for R410A is
the same as that for conventional R22. Incidentally, when the torque is weak, the gas leakage may occur.
When it is strong, the flare nut may crack and may be made non-removable. When choosing the tightening torque, comply with values designated by manufacturers. Table 3-2-7 shows reference values.
NOTE :
When applying oil to the flare surface, be sure to use oil designated by the manufacturer.
If any other oil is used, the lubricating oils may deteriorate and cause the compressor to burn out.

Table 3-2-7 Tightening torque of flare for R410A [Reference values]
Nominal
diameter

Outer diameter
(mm)

Tightening torque
N•m (kgf•cm)

Tightening torque of torque
wrenches available on the market
N•m (kgf•cm)

1/4

6.35

14 to 18 (140 to 180)

16 (160), 18 (180)

3/8

9.52

33 to 42 (330 to 420)

42 (420)

1/2

12.70

50 to 62 (500 to 620)

55 (550)

5/8

15.88

63 to 77 (630 to 770)

65 (650)

– 10 –

3-3. Tools
3-3-1. Required Tools
The service port diameter of packed valve of the outdoor unit in the air-water heat pump using R410A is
changed to prevent mixing of other refrigerant. To reinforce the pressure-resisting strength, flare processing
dimensions and opposite side dimension of flare nut (For Ø12.7 copper pipe) of the refrigerant piping are
lengthened.
The used refrigerating oil is changed, and mixing of oil may cause a trouble such as generation of sludge,
clogging of capillary, etc. Accordingly, the tools to be used are classified into the following three types.
1. Tools exclusive for R410A (Those which cannot be used for conventional refrigerant (R22))
2. Tools exclusive for R410A, but can be also used for conventional refrigerant (R22)
3. Tools commonly used for R410A and for conventional refrigerant (R22)
The table below shows the tools exclusive for R410A and their interchangeability.

Tools exclusive for R410A (The following tools for R410A are required.)
Tools whose specifications are changed for R410A and their interchangeability
R410A
air-water heat pump installation
No.

Used tool

Usage

Existence of
new equipment
for R410A

Whether conventional equipment
can be used

Conventional air-water
heat pump installation
Whether new equipment
can be used with
conventional refrigerant

Flare tool

Pipe flaring

Yes

*(Note 1)

Copper pipe gauge for
adjusting projection
margin

Flaring by
conventional flare tool

Yes

*(Note 1)

Torque wrench
(For Ø12.7)

Connection of flare nut

Yes

Gauge manifold
Charge hose

Evacuating, refrigerant
charge, run check, etc.

Yes

Vacuum pump adapter

Vacuum evacuating

Yes

Electronic balance for
refrigerant charging

Refrigerant charge

Yes

Refrigerant cylinder

Refrigerant charge

Yes

Leakage detector

Gas leakage check

Yes

Charging cylinder

Refrigerant charge

(Note 2)

×
×
×
×
×

×
¡

(Note 1) When flaring is carried out for R410A using the conventional flare tools, adjustment of projection
margin is necessary. For this adjustment, a copper pipe gauge, etc. are necessary.
(Note 2) Charging cylinder for R410A is being currently developed.

General tools (Conventional tools can be used.)
In addition to the above exclusive tools, the following equipments which serve also for R22 are necessary
as the general tools.
1. Vacuum pump
Use vacuum pump by attaching
vacuum pump adapter.
2. Torque wrench (For Ø6.35, Ø9.52)
3. Pipe cutter

4.
5.
6.
7.
8.

Reamer
Pipe bender
Level vial
Screwdriver (+, –)
Spanner or Monkey wrench

9. Hole core drill (Ø65)
10. Hexagon wrench
(Opposite side 4mm)
11. Tape measure
12. Metal saw

Also prepare the following equipments for other installation method and run check.
1. Clamp meter
2. Thermometer

3. Insulation resistance tester
4. Electroscope

– 11 –

3-4. Recharging of Refrigerant
When it is necessary to recharge refrigerant, charge the specified amount of new refrigerant according to the
following steps.
Recover the refrigerant, and check no refrigerant
remains in the equipment.

When the compound gauge’s pointer has indicated
–0.1 Mpa (–76 cmHg), place the handle Low in the
fully closed position, and turn off the vacuum pump’s
power switch.

Connect the charge hose to packed valve service
port at the outdoor unit’s gas side.

Keep the status as it is for 1 to 2 minutes, and ensure
that the compound gauge’s pointer does not return.

Connect the charge hose to the vacuum pump
adapter.

Set the refrigerant cylinder to the electronic balance,
connect the connecting hose to the cylinder and the
connecting port of the electronic balance, and charge
liquid refrigerant.

Open fully both packed valves at liquid and gas
sides.

(For refrigerant charging, see the figure below.)
Place the handle of the gauge manifold Low in the
fully opened position, and turn on the vacuum pump’s
power switch. Then, evacuating the refrigerant in the
cycle.

1. Never charge refrigerant exceeding the specified amount.
2. If the specified amount of refrigerant cannot be charged, charge refrigerant bit by bit in COOL mode.
3. Do not carry out additional charging.
When additional charging is carried out if refrigerant leaks, the refrigerant composition changes in the
refrigeration cycle, that is characteristics of the air conditioner changes, refrigerant exceeding the
specified amount is charged, and working pressure in the refrigeration cycle becomes abnormally high
pressure, and may cause a rupture or personal injury.

(Water heat
exchanger unit)

(Outdoor unit)

Opened

Refrigerant cylinder
(with siphon)
Check valve
Opened

Opened
Open/close
valve for charging

Closed

Service port
Electronic balance for refrigerant charging

Fig. 3-4-1 Configuration of refrigerant charging

– 12 –

1. Be sure to make setting so that liquid can be charged.
2. When using a cylinder equipped with a siphon, liquid can be charged without turning it upside down.
It is necessary for charging refrigerant under condition of liquid because R410A is mixed type of refrigerant.
Accordingly, when charging refrigerant from the refrigerant cylinder to the equipment, charge it turning the
cylinder upside down if cylinder is not equipped with siphon.

[ Cylinder with siphon ]

[ Cylinder without siphon ]

Gauge manifold

Gauge manifold
OUTDOOR unit

OUTDOOR unit

Refrigerant
cylinder

Refrigerant
cylinder
Electronic
balance

Electronic
balance

Siphon

R410A refrigerant is HFC mixed refrigerant.
Therefore, if it is charged with gas, the composition of the charged refrigerant changes and the
characteristics of the equipment varies.

Fig. 3-4-2

3-5. Brazing of Pipes

1. Phosphor bronze brazing filler tends to react
with sulfur and produce a fragile compound
water solution, which may cause a gas
leakage. Therefore, use any other type of
brazing filler at a hot spring resort, etc., and
coat the surface with a paint.
2. When performing brazing again at time of
servicing, use the same type of brazing filler.

3-5-1. Materials for Brazing
1. Silver brazing filler
Silver brazing filler is an alloy mainly composed
of silver and copper. It is used to join iron, copper
or copper alloy, and is relatively expensive though
it excels in solderability.
2. Phosphor bronze brazing filler
Phosphor bronze brazing filler is generally used
to join copper or copper alloy.
3. Low temperature brazing filler
Low temperature brazing filler is generally called
solder, and is an alloy of tin and lead. Since it is
weak in adhesive strength, do not use it for
refrigerant pipes.

3-5-2. Flux
1. Reason why flux is necessary
• By removing the oxide film and any foreign
matter on the metal surface, it assists the flow
of brazing filler.
• In the brazing process, it prevents the metal
surface from being oxidized.
• By reducing the brazing filler’s surface tension,
the brazing filler adheres better to the treated
metal.

– 13 –

2. Characteristics required for flux
• Activated temperature of flux coincides with the
brazing temperature.
• Due to a wide effective temperature range, flux
is hard to carbonize.
• It is easy to remove slag after brazing.
• The corrosive action to the treated metal and
brazing filler is minimum.
• It excels in coating performance and is harmless to the human body.
As the flux works in a complicated manner as
described above, it is necessary to select an
adequate type of flux according to the type and
shape of treated metal, type of brazing filler and
brazing method, etc.
3. Types of flux
• Noncorrosive flux
Generally, it is a compound of borax and boric
acid.
It is effective in case where the brazing temperature is higher than 800°C.
• Activated flux
Most of fluxes generally used for silver brazing
are this type.
It features an increased oxide film removing
capability due to the addition of compounds
such as potassium fluoride, potassium chloride
and sodium fluoride to the borax-boric acid
compound.
4. Piping materials for brazing and used
brazing filler/flux
Piping material

Used brazing filler

Used flux

Copper - Copper

Phosphor copper

Do not use

Copper - Iron

Silver

Paste flux

Iron - Iron

Silver

Vapor flux

3-5-3. Brazing
As brazing work requires sophisticated techniques,
experiences based upon a theoretical knowledge, it
must be performed by a person qualified.
In order to prevent the oxide film from occurring in
the pipe interior during brazing, it is effective to
proceed with brazing while letting dry Nitrogen gas
(N2) flow.

Never use gas other than Nitrogen gas.
1. Brazing method to prevent oxidation
1) Attach a reducing valve and a flow-meter to
the Nitrogen gas cylinder.
2) Use a copper pipe to direct the piping material, and attach a flow-meter to the cylinder.
3) Apply a seal onto the clearance between the
piping material and inserted copper pipe for
Nitrogen in order to prevent backflow of the
Nitrogen gas.
4) When the Nitrogen gas is flowing, be sure to
keep the piping end open.
5) Adjust the flow rate of Nitrogen gas so that it
is lower than 0.05 m3/Hr or 0.02 MPa
(0.2kgf/cm2) by means of the reducing valve.
6) After performing the steps above, keep the
Nitrogen gas flowing until the pipe cools down
to a certain extent (temperature at which
pipes are touchable with hands).
7) Remove the flux completely after brazing.

M Flow meter

Stop valve
Nitrogen gas
cylinder

1. Do not enter flux into the refrigeration cycle.
2. When chlorine contained in the flux remains
within the pipe, the lubricating oil deteriorates.
Therefore, use a flux which does not contain
chlorine.
3. When adding water to the flux, use water
which does not contain chlorine (e.g. distilled
water or ion-exchange water).
4. Remove the flux after brazing.

From Nitrogen cylinder

Pipe
Nitrogen
gas
Rubber plug

Fig. 3-5-1 Prevention of oxidation during brazing

– 14 –

4. CONSTRUCTION VIEWS
4-1. Indoor Unit
RAS-B10GKVP-E
RAS-B13GKVP-E
RAS-B16GKVP-E

790

Plasma pure filter

Indoor heat exchanger

Front panel

Air filter

215

250

790

53
Knockout system

Zeolite-plus filter

Air ionizer

54.5

Remote controller holder
64

5
125.5

Installation plate hanging section

Wireless remote controller
58

Connecting pipe
(Outside length:0.4m)
Flare Ø9.52
(RAS-B16GKVP-E : Ø12.7)

Connecting pipe
(Outside length:0.45m)
Flare Ø6.35

163

Drain hose
(Outside length:0.54m)

290

Installation plate
hanging section

Parts name of remote controller

674
450
288

25
Stud bolt hole
for Ø6

Minimum
distance
to ceilinfg

Stud bolt hole
for Ø8 to Ø10
Minimum
distance
to wall

Minimum
distance
to wall

74 or more

140 or more

Lower part
hanging section

250
42 167.5

Hanging
section

47 or more

Outline of
installation plate

Center line
of main unit
91

Center line of
installation plate

304

304
790

– 15 –

WH-H03JE

4-2. Outdoor Unit
RAS-10GAVP-E, RAS-13GAVP-E, RAS-16GAVP-E

108

Ø25 drain hole
125

RAS-13GAVP-E)
(Pipe dia. Ø9.52:RAS-10GAVP-E,
Ø12.7:RAS-16GAVP-E

290

Connecting pipe port
(Pipe dia. Ø6.35)

8-Ø7 hole
(for fixing outdoor unit)
Ø11x14 long hole
(for Ø8-Ø10 anchor bolt)

B leg part

257

483

Packed valve cover
157

147

108
69.5

Ø11-14U-shape hole
(for Ø8-Ø10 anchor bolt)
Connecting pipe port

145.5

320
(Anchor bort
long hole pitch)
306
Ø7 hole pitch

2-Ø20x88 drain long hole

600

A leg part

483
449

25
22

35
52

143

137

550

145

500

342

780

Charging port
4-Ø4.5 embossment

Fan guard

Fin guard

Detailed A leg part
600
54
38

When installing the outdoor unit,
leave open in at least two of
directions (A), (B), (C) and (D)
shown in the figure below.

5
R1
hole
2-Ø7

320

Z view

Mounting dimensions of anchor bolt
2-Ø11x14U- Shape hole
(for Ø8-Ø10 anchor bolt)
D

50 or more

Outside line
of product

600

Intake
250 or more A

C 100 or more

Outside line
of product
200 or more

Outlet

Minimum distance
from wall
2-Ø11x14 long hole
(for Ø8-Ø10 anchor bolt)

Outside line
of product

320

Intake

38
54
600

Detailed B leg part

– 16 –

2-Ø
7h
ole
R1
5
R5
.5

5. WIRING DIAGRAM
5-1. Outdoor Unit
RAS-10GAVP-E, RAS-13GAVP-E, RAS-16GAVP-E

Color
Identification

220-240V
220V

RED : RED
WHI : WHITE
BLK : BLACK
BLU : BLUE
BRW : BROWN
ORN : ORANGE
PUR : PURPUL
YEL : YELLOW
GRY : GRAY
PNK : PINK
GRN& GREEN&
YEL : YELLOW

~50Hz
~60Hz

5-2. Indoor Unit
RAS-B10GKVP-E, RAS-B13GKVP-E, RAS-B16GKVP-E

RED
BRW
BRW
BRW

1
2
3
4
5
6

HEAT EXCHANGER
SENSOR (TC) CN03
(WHI)
BLK
1 1
BLK

BLK WHI RED

3
CN22

CN33
(WHI)

2 2

INDOOR
TERMINAL 1 2 3
BLOCK

Ion electrode

1 2 3 4
1 2 3 4
CN01
(BLU)
BLK
1 1
BLK

Air purifier
Electrode

1 2 3 4
1 2 3 4

1
2
3
4
5
6

High-voltage
Power supply

BLK
BLK

Heat
exchanger
GRN & YEL

CN23

CN21

1 1

CN34 2 2
(RED)

FUSE
F01
AC 250V

T3.15A

CN10
(WHI)

1 1

2 2

THERMO SENSOR
(TA)

1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
MCC-899 10 10

BLU
BLU
BLU
BLU
BLU
BLU
BLU
BLU
WHI

CN13
(WHI)

9
8
7
6
5
4
3
2
1

9
8
7
6
5
4
3
2 MAIN P.C. BOARD
1
(MCC-5020)

LINE
FILTER

DC5V
DB01
DC12V

TNR

CN08 (WHI)

POWER SUPPLY
CIRCUIT

Wireless Unit Assembly

CN100
(WHI)

3
4
5
6

Micro SW
BLU
FAN MOTOR
RED
BLK

3
WHI
4
YEL
5
BLU
6

CN07
(WHI)

1
2
3
4
5

BRW

1
2
3
4
5

WHI
YEL
YEL
YEL
YEL

DC MOTOR

1
2
3
4
5

LOUVER MOTOR

1 2 3 4

– 17 –

6. SPECIFICATIONS OF ELECTRICAL PARTS
6-1. Indoor Unit
RAS-B10GKVP-E, RAS-B13GKVP-E, RAS-B16GKVP-E
Parts name

No.

Type
MF-280-30-5R

Specifications

Fan motor (for indoor)

DC280–340V, 30W

Room temp. sensor (TA-sensor)

(–)

10kΩ at 25°C

Heat exchanger temp. sensor (TC-sensor)

(–)

10kΩ at 25°C

Louver motor

MP24Z

Output (Rated) 1W, 16 poles, DC12V

Model name

Rating

6-2. Outdoor Unit
RAS-10GAVP-E, RAS-13GAVP-E, RAS-16GAVP-E
Parts name

No.
1

Reactor

CH-57

Outside fan motor

Suction temp. sensor (TS sensor)

(Inverter attached)

10kΩ (25°C)

Discharge temp. sensor (TD sensor)

(Inverter attached)

62kΩ (20°C)

Outside air temp. sensor (TO sensor)

(Inverter attached)

10kΩ (25°C)

Heat exchanger temp. sensor (TE sensor)

(Inverter attached)

10kΩ (25°C)

Terminal block (6P)

——

20A, AC250V

Compressor

Coil for P.M.V.

Coil for 4-way valve

ICF-140-43-4R

DA111A1F-20F1
CAM-MD12TF
VHV

– 18 –

L = 10mH, 16A × 2
DC140V, 43W

3-phases 4-poles 750W
DC12V
AC220–240V

7. REFRIGERANT CYCLE DIAGRAM
7-1. Refrigerant Cycle Diagram
RAS-B10GKVP-E/RAS-10GAVP-E

INDOOR UNIT

Temp. measurement

Indoor heat
exchanger

P Pressure measurement
Gauge attaching port
Vacuum pump connecting port

Deoxidized copper pipe
Outer dia. : 6.35mm
Thickness : 0.8mm
Sectional shape
of heat insulator

Deoxidized copper pipe
Outer dia. : 9.52mm
Thickness : 0.8mm

Allowable pipe length

Cross flow fan

Allowable height
difference : 10m

Max. : 25m
Min.
: 2m
Chargeless : 15m
Charge : 20g/m
(16 to 25m)

Strainer

Muffler
4-way valve
(STF-0108Z)

Pulse motor
valve at liquid side
(CAM-B22YGTF-3)

Muffler
TD

Compressor
DA111A1F-20F1

Strainer

TS
TO

Outdoor heat
exchanger

Temp. measurement T2

Refrigerant amount : 0.82kg

Propeller fan

OUTDOOR UNIT

NOTE :

Gas leak check position
Refrigerant flow (Cooling)
Refrigerant flow (Heating)

NOTE :
• The maximum pipe length of this air conditioner is 25 m. When the pipe length exceeds 15m, the additional
charging of refrigerant, 20g per 1m for the part of pipe exceeded 15m is required. (Max. 200g)

– 19 –

RAS-B13GKVP-E/RAS-13GAVP-E, RAS-B16GKVP-E/RAS-16GAVP-E

INDOOR UNIT

Temp. measurement

Indoor heat
exchanger

P Pressure measurement
Gauge attaching port
Vacuum pump connecting port

Deoxidized copper pipe
Outer dia. : 6.35mm
Thickness : 0.8mm
Sectional shape
of heat insulator

Deoxidized copper pipe
Outer dia. : 9.52mm(13),
12.7mm(16)
Thickness : 0.8mm

Allowable pipe length

Cross flow fan

Allowable height
difference : 10m

Max. : 25m
Min.
: 2m
Chargeless : 15m
Charge : 20g/m
(16 to 25m)

Strainer

Muffler
4-way valve
(STF-0108Z)

Pulse motor
valve at liquid side
(CAM-B22YGTF-3)

Muffler
TD

Compressor
DA111A1F-20F1
TS
TO

Outdoor heat
exchanger

Split capillary
Ø1.2 x 80
Ø1.2 x 80

Temp. measurement T2

Refrigerant amount : 0.96kg

Propeller fan

OUTDOOR UNIT

NOTE :

Gas leak check position
Refrigerant flow (Cooling)
Refrigerant flow (Heating)

– 20 –

7-2. Operation Data

Temperature
condition (°C)
Indoor

27/19

Model name
RAS-

Outdoor

35/–

Standard
pressure
P (MPa)

Heat exchanger
pipe temp.
T1 (°C)

T2 (°C)

Indoor
fan mode

Outdoor
fan mode

Compressor
revolution
(rps)

B10GKVP-E

0.9 to 1.1

13 to 15

42 to 44

High

B13GKVP-E

0.8 to 1.0

11 to 14

42 to 45

High

B16GKVP-E

0.7 to 0.9

8 to 11

43 to 47

High

Model name
RAS-

Standard
pressure
P (MPa)

Indoor
fan mode

Outdoor
fan mode

Compressor
revolution
(rps)

Temperature
condition (°C)
Indoor

20/–

Outdoor

7/6

Heat exchanger
pipe temp.
T1 (°C)

T2 (°C)

B10GKVP-E

2.2 to 2.4

37 to 39

0 to 3

High

B13GKVP-E

2.5 to 2.7

42 to 45

0 to 2

High

B16GKVP-E

2.8 to 3.0

48 to 49

0 to 2

High

NOTES :
1. Measure surface temperature of heat exchanger pipe around center of heat exchanger path U bent.
(Thermistor themometer)
2. Connecting piping condition : 7.5 m

– 21 –

8. CONTROL BLOCK DIAGRAM
8-1. Indoor Unit
RAS-B10GKVP-E, RAS-B13GKVP-E, RAS-B16GKVP-E
Indoor Unit Control Unit

M.C.U.
Heat Exchanger Sensor (Tc)

Louver
Motor

Functions
• Cold draft preventing Function

Room Temperature Sensor (Ta)
• 3-minute Delay at Restart for Compressor
Infrared Rays Signal Receiver
and Indication

Initializing Circuit
Clock Frequency
Oscillator Circuit

Louver Motor
Drive Control

• Fan Motor Starting Control
Indoor Fan
Motor Control

• Processing
(Temperature Processing)

Indoor
Fan Motor

• Timer
• Serial Signal Communication
• Clean Function

Power Supply
Circuit

Air purifier
unit

Converter
(D.C circuit)

Micro Switch

Noise Filter

From Outdoor Unit
220-240V ~50Hz
220V ~60Hz

Serial Signal Transmitter/Receiver

Serial Signal Communication
(Operation Command and Information)

Remote Controller

REMOTE CONTROLLER
Operation (START/STOP)
Operation Mode Selection
AUTO, COOL, DRY, HEAT
Thermo. Setting
Fan Speed Selection
ON TIMER Setting
OFF TIMER Setting
Louver AUTO Swing
Louver Direction Setting
ECO
Hi-POWER
Air Purifier
SLEEP

– 22 –

Infrared Rays, 36.7kHz

~50Hz
~60Hz
MCC5009 (P.C.B)
Indoor unit
send/receive
circuit

Outdoor air
temp. sensor

– 23 –

Suction temp.
sensor
Heat exchanger
temp.sensor

Noise
Filter

Current
detect

M.C.U
•
•
•
•
•
•
•
•
•
•
•

Discharge
temp. sensor

OUTDOOR UNIT

PWM synthesis function
Input current release control
IGBT over-current detect control
Outdoor fan control
High power factor correction control
Inverter output frequency control
A/D converter function
P.M.V. control
Discharge temp. control
4-way valve control
Signal communication to indoor unit

High Power
factor Correction
circuit

Clock
frequency
4MHz

Input current
sensor

Converter
(AC → DC)

Driver circuit
of P.M.V.

P.M.V.

Gate drive
circuit

Current
detect

Gate drive
circuit

Inverter
(DC → AC)

Relay
circuit

4-way
valve

Inverter
(DC → AC)

P.M.V. : Pulse Motor Valve
M.C.U. : Micro Control Unit

Outdoor
Fan motor

Compressor

8-2. Outdoor Unit (Inverter Assembly)

220–240 V
220 V

RAS-10GAVP-E, RAS-13GAVP-E, RAS-16GAVP-E

MICRO-COMPUTER BLOCK DIAGRAM

For INDOOR UNIT

9. OPERATION DESCRIPTION
• Detection of inverter input current and current
release operation
• Over-current detection and prevention operation
to IGBT module (Compressor stop function)
• Compressor and outdoor fan stop function when
serial signal is off (when the serial signal does not
reach the board assembly of outdoor control by
trouble of the signal system)
• Transferring of operation information (Serial
signal) from outdoor unit controller to indoor unit
controller
• Detection of outdoor temperature and operation
revolution control
• Defrost control in heating operation (Temp.
measurement by outdoor heat exchanger and
control for 4-way valve and outdoor fan)

9-1. Outline of Air Conditioner Control
This air conditioner is a capacity-variable type air
conditioner, which uses DC motor for the indoor fan
motor and the outdoor fan motor. And the capacityproportional control compressor which can change the
motor speed in the range from 13 to 115 rps is
mounted. The DC motor drive circuit is mounted to the
indoor unit. The compressor and the inverter to control
fan motor are mounted to the outdoor unit.
The entire air conditioner is mainly controlled by the
indoor unit controller.
The indoor unit controller drives the indoor fan motor
based upon command sent from the remote controller,
and transfers the operation command to the outdoor
unit controller.
The outdoor unit controller receives operation command from the indoor unit side, and controls the
outdoor fan and the pulse motor valve. (P.M.V)
Besides, detecting revolution position of the compressor motor, the outdoor unit controller controls speed of
the compressor motor by controlling output voltage of
the inverter and switching timing of the supply power
(current transfer timing) so that motors drive according
to the operation command.
And then, the outdoor unit controller transfers reversely
the operating status information of the outdoor unit to
control the indoor unit controller.

3. Contents of operation command signal
(Serial signal) from indoor unit controller to
outdoor unit controller
The following three types of signals are sent from
the indoor unit controller.
• Operation mode set on the remote controller
• Compressor revolution command signal defined
by indoor temperature and set temperature
(Correction along with variation of room temperature and correction of indoor heat exchanger
temperature are added.)
• Temperature of indoor heat exchanger
• For these signals ([Operation mode] and [Compressor revolution] indoor heat exchanger temperature), the outdoor unit controller monitors the
input current to the inverter, and performs the
followed operation within the range that current
does not exceed the allowable value.

As the compressor adopts four-pole brushless
DC motor, the frequency of the supply power
from inverter to compressor is two-times cycles
of the actual number of revolution.

1. Role of indoor unit controller
The indoor unit controller judges the operation
commands from the remote controller and assumes
the following functions.
• Judgment of suction air temperature of the indoor
heat exchanger by using the indoor temp. sensor.
(TA sensor)
• Judgment of the indoor heat exchanger temperature by using heat exchanger sensor (TC sensor)
(Prevent-freezing control, etc.)
• Louver motor control
• Indoor fan motor operation control
• LED (Light Emitting Diode) display control
• Transferring of operation command signal (Serial
signal) to the outdoor unit
• Reception of information of operation status
(Serial signal including outside temp. data) to the
outdoor unit and judgment/display of error
• Air purifier operation control

4. Contents of operation command signal
(Serial signal) from outdoor unit controller
to indoor unit controller

2. Role of outdoor unit controller

The following signals are sent from the outdoor unit
controller.
• The current operation mode
• The current compressor revolution
• Outdoor temperature
• Existence of protective circuit operation
For transferring of these signals, the indoor unit
controller monitors the contents of signals, and
judges existence of trouble occurrence.
Contents of judgment are described below.
• Whether distinction of the current operation
status meets to the operation command signal
• Whether protective circuit operates
When no signal is received from the outdoor
unit controller, it is assumed as a trouble.

Receiving the operation command signal (Serial
signal) from the indoor unit controller, the outdoor
unit performs its role.
• Compressor operation control
• Operation control of outdoor fan motor
Operations followed to judgment
of serial signal from indoor side.
• P.M.V. control
• 4-way valve control





– 24 –

9-2. Operation Description
9-2.

1. Basic operation ........................................................................................................... 26
1. Operation control ................................................................................................... 26
2. Cooling/Heating operation ..................................................................................... 27
3. AUTO operation ..................................................................................................... 27
4. DRY operation ........................................................................................................ 27
2. Indoor fan motor control ............................................................................................. 28
3. Outdoor fan motor control........................................................................................... 30
4. Capacity control .......................................................................................................... 31
5. Current release control ............................................................................................... 31
6. Release protective control by temperature of indoor heat exchanger ........................ 32
7. Quick heating control .................................................................................................. 33
8. Defrost control (Only in heating operation) ................................................................ 33
9. Louver control ............................................................................................................. 34
1) Louver position ....................................................................................................... 34
2) Air direction adjustment ......................................................................................... 34
3) Swing ..................................................................................................................... 34
10. ECO operation ............................................................................................................ 35
11. Temporary operation ................................................................................................... 36
12. Air purifying control [Detection of abnormality] .......................................................... 37
13. Discharge temperature control ................................................................................... 37
14. Pulse motor valve (P.M.V.) control .............................................................................. 38
15. Clean operation .......................................................................................................... 39
16. Clean operation release ............................................................................................ 40
17. Select switch on remote controller ............................................................................. 41

9-3. Auto Restart Function............................................................................................. 42
9-3-1. How to Set the Auto Restart Function .................................................................... 42
9-3-2. How to Cancel the Auto Restart Function ............................................................. 43
9-3-3. Power Failure During Timer Operation ................................................................... 43

9-4. FILTER Indicator ...................................................................................................... 43
9-4-1. How to Turn Off FILTER Indicator ............................................................................ 43

9-5. Remote Controller and Its Fuctions ...................................................................... 44
9-5-1. Parts Name of Remote Controller ........................................................................... 44
9-5-2. Name and Functions of Indications on Remote Controller ................................. 45

9-6. Hi-POWER Mode
([Hi-POWER] button on the remote controller is pressed) .................................. 46

– 25 –

Item

Operation flow and applicable data, etc.

1. Basic
operation

Description

1. Operation control
Receiving the user’s operation condition setup, the operation statuses of indoor/outdoor units are
controlled.
1) The operation conditions are selected by the remote controller as shown in the below.
2) A signal is sent by ON button of the remote controller.
3) The signal is received by a sensor of the indoor unit and processed by the indoor controllers as
shown in the below.
4) The indoor controller controls the indoor fan motor and louver motor.
5) The indoor controller sends the operation command to the outdoor controller, and sends/receives
the control status with a serial signal.
6) The outdoor controller controls the operation as shown in the left, and also controls the compressor, outdoor fan motor, 4-way valve and pulse motor valve.

Remote controller
Selection of
operation conditions
ON/OFF

Control contents of remote controller
• ON/OFF (Air conditioner/Air purifier)
• Operation select (COOL/HEAT/AUTO/DRY)
• Temperature setup
• Air direction
• Swing
• Air volume select (AUTO/LOW/LOW+/MED/MED+/HIGH)
• ECO
• ON timer setup
• OFF timer setup
• High power

Indoor unit
Signal receiving
Indoor unit control
Operation command
Serial signal send/receive

Indoor unit control
• Command signal generating function of
indoor unit operation
• Calculation function (temperature calculation)
• Activation compensation function of indoor fan
• Cold draft preventive function
• Timer function
• Indoor heat exchanger release control

Outdoor unit
Serial signal send/receive
Outdoor unit control

Outdoor unit control
• Frequency control of inverter output
• Waveform composite function
• Calculation function
(Temperature calculation)
• AD conversion function
• Quick heating function
• Delay function of compressor reactivation
• Current release function
• GTr over-current preventive function
• Defrost operation function

– 26 –

• Indoor fan motor
• Louver motor

Inverter

• Compressor
• Outdoor fan motor
• 4-way valve
• Pulse motor valve
(P.M.V.)

Item
1. Basic
operation

Operation flow and applicable data, etc.

Description

2. Cooling/Heating operation
The operations are performed in the following parts by controls according to cooling/heating conditions.
1) Receiving the operation ON signal of the remote controller, the cooling or heating operation signal
starts being transferred form the indoor controller to the outdoor unit.
2) At the indoor unit side, the indoor fan is operated according to the contents of “2. Indoor fan
motor control” and the louver according to the contents of “9. Louver control”, respectively.
3) The outdoor unit controls the outdoor fan motor, compressor, pulse motor valve and
4-way valve according to the operation signal sent from the indoor unit.
*1. The power coupler of 4-way valve is usually turned off, and it is turned on during defrost
operation. (Only in heating)
Operation ON
Indoor unit control

Setup of remote controller
Indoor fan motor control / Louver control

Sending of operation command signal

Outdoor unit control

Compressor revolution control / Outdoor fan motor control /
4-way valve control
In cooling operation: ON
In heating operation: OFF
Pulse motor valve control

[

3. AUTO operation
Selection of operation mode
As shown in the following figure, the operation starts by
selecting automatically the status of room temperature
(Ta) when starting AUTO operation.
*1. When reselecting the operation mode, the fan
speed is controlled by the previous operation mode.

Ta
Cooling operation

Ts + 1
Monitoring (Fan)

Ts – 1
Heating operation

]

1) Detects the room temperature (Ta) when
the operation started.
2) Selects an operation mode from Ta in
the left figure.
3) Fan operation continues until an
operation mode is selected.
4) When AUTO operation has started
within 2 hours after heating operation
stopped and if the room temperature is
20°C or more, the fan operation is
performed with ”Super Ultra LOW” mode
for 3 minutes.
Then, select an operation mode.
5) If the status of compressor-OFF
continues for 15 minutes the room
temperature after selecting an operation
mode (COOL/HEAT), reselect an
operation mode.

4. DRY operation
1) Detects the room temperature (Ta) when
the DRY operation started.
DRY operation is performed according to the difference
between room temperature and the setup temperature as 2) Starts operation under conditions in the
shown below.
left figure according to the temperature
difference between the room temperaIn DRY operation, fan speed is controlled in order to
ture and the setup temperature (Tsc).
prevent lowering of the room temperature and to avoid air
Setup temperature (Tsc)
flow from blowing directly to persons.
= Set temperature on remote controller
(Ts) + (0.0 to 1.0)
[˚C]
3) When the room temperature is lower
Ta
L– (W5)
1°C or less than the setup temperature,
turn off the compressor.

+1.0

(W5+W3) / 2

+0.5
SL (W3)

Tsc
Fan speed

– 27 –

Item

Operation flow and applicable data, etc.

2. Indoor fan
motor control

Description

(This operation controls the fan speed at indoor unit side.)
The indoor fan (cross flow fan) is operated by the phasecontrol induction motor. The fan rotates in 5 stages in
MANUAL mode, and in 5 stages in AUTO mode, respectively. (Table 1)

UH
H
M+
M
L+
L
LUL
SUL

COOL ON

Fan speed setup

MANUAL
(Fig. 1)

Fan speed

Indication

AUTO

L+

(L + M) / 2

M+

(M + H) / 2

WC
(Fig. 2)

Air volume AUTO
Ta
[˚C]
M+(WB)

+2.5
+2.0

*3 : Fan speed = (M + –L) x 3/4 + L

+1.5

*4 : Fan speed = (M + –L) x 2/4 + L

+1.0

*5 : Fan speed = (M + –L) x 1/4 + L

+0.5

Tsc

L(W6)

* Symbols
: Ultra High
: High
: Medium+
: Medium
: Low+
: Low
: Low–
: Ultra Low
: Super Ultra Low

* The fan speed broadly varies due
to position of the louver, etc.
The described value indicates one
under condition of inclining
downward blowing.
1) When setting the fan speed to L,
L+, M, M+ or H on the remote
controller, the operation is
performed with the constant
speed shown in Fig. 1.
2) When setting the fan speed to
AUTO on the remote controller,
revolution of the fan motor is
controlled to the fan speed level
shown in Fig. 2 and Table 1
according to the setup temperature, room temperature, and heat
exchanger temperature.

(Linear approximation
from M+ and L)

(Table 1) Indoor fan air flow rate
Fan speed
COOL HEAT
level
WF
WE
WD
WC
WB
WA
W9
W8
W7
W6
W5
W4
W3
W2
W1

UH
H
M+
M
L+
L
L–
UL
SUL

RAS-B10GKVP-E
DRY

UH
H
M+

M
L+
L
L–
UL

SUL

L+
L
L–
UL
SUL

RAS-B13GKVP-E

RAS-B16GKVP-E

Fan speed
(rpm)

Air flow rate
(m3/h)

Fan speed
(rpm)

Air flow rate
(m3/h)

Fan speed
(rpm)

Air flow rate
(m3/h)

1630
1480
1400
1350
1200
1110
980
910
900
890
880
730
580
430
400

684
609
569
544
468
423
358
323
318
313
308
232
157
82
67

1650
1530
1440
1390
1240
1150
1010
910
900
890
880
730
580
430
400

694
634
589
564
488
443
373
323
318
313
308
232
157
82
67

1650
1580
1550
1530
1380
1230
1080
970
960
950
940
790
640
490
400

694
659
644
634
559
483
408
353
348
343
338
263
187
112
67

– 28 –

Item

Operation flow and applicable data, etc.

2. Indoor fan
motor control

Description

1) When setting the fan speed to L,
L+, M, M+ or H on the remote
controller, the operation is performed with the constant speed
shown in Fig. 3 and Table 1.
2) When setting the fan speed to
AUTO on the remote controller,
revolution of the fan motor is
controlled to the fan speed level
shown in Fig. 5 according to the set
temperature and room temperature.
3) Min air flow rate is controlled by
temperature of the indoor heat
exchanger (Tc) as shown in Fig. 4.
4) Cold draft prevention, the fan
speed is controlled by temperature
of the indoor heat exchanger (Tc)
as shown in Fig. 6.

HEAT ON

Fan speed setup

MANUAL

(Fig. 3)

Indication

AUTO

Fan speed

L+

(L + M) / 2

M+

(M + H) / 2

YES

TC ≥ 42˚C

Min air flow rate control

NO
Limited to Min WD tap

Tc
52
51

42
41
(Fig. 4)

No limit

* Fan speed =
(TC –

– W8) + W8
Cold draft preventive control

Basic fan control

Fan speed
AUTO

TA [˚C]

TSC
–0.5
–1.0
–1.5
–2.0
–2.5

L (W8)

46
45

Tc
46
45

34
33

33
32

21
20

*A+4

*A-4

H (WE)

c
d

Line-approximate
H and SUL with Tc.

SUL (W2)

Stop

–5.0

Fan speed MANUAL in starting
Fan speed AUTO in stability
Fan speed AUTO in starting

M+ (WD)

–5.5
H (WE)

*1:
*2:

4+L
4+L

* No limitation while fan speed MANUAL mode is in stability.
* A: When Tsc ≥ 24, A is 24, and when Tsc < 24, A is Tsc
Tsc: Set value

–

(Fig. 6)

(Fig. 5)
[In starting and in stability]
In starting
FAN AUTO

In stability

• Until 12 minutes passed after operation start
• When 12 to 25 minutes passed after operation start
and room temp. is higher than (set temp. –3°C)
• When 12 to 25 minutes passed after operation
start and room temp. is 3°C or lower than set temp. • When 25 minutes or more passed after operation start
• Room temp. ≥ Set temp. –3.5°C

FAN Manual • Room temp. < Set temp. –4°C

– 29 –

Item
3. Outdoor fan
motor control

Operation flow and applicable data, etc.

Description

The blowing air volume at the outdoor unit side is controlled.
Receiving the operation command from the controller of
indoor unit, the controller of outdoor unit controls fan speed.
* For the fan motor, a DC motor with non-stage variable
speed system is used. However, it is limited to 8 stages for
reasons of controlling.

1) The operation command sent
from the remote controller is
processed by the indoor unit
controller and transferred to the
controller of the outdoor unit.
2) When strong wind blows at
outdoor side, the operation of air
conditioner continues with the
fan motor stopped.
3) Whether the fan is locked or not
is detected, and the operation of
air conditioner stops and an
alarm is displayed if the fan is
locked.
4) According to each operation
mode, by the conditions of
outdoor temperature (To) and
compressor revolution, the speed
of the outdoor fan shown in the
table is selected.

Air conditioner ON
(Remote controller)
Indoor unit controller

1) Outdoor unit
operation command
(Outdoor fan control)
2) Fan speed ≥ 400
when the motor stopped.

YES

OFF status of
fan motor continues.

YES

Air conditioner
OFF

NO
Fan motor ON

3) Fan lock

Alarm
display

NO
4) Motor operates as shown in the table below.

In Heating operation

In cooling operation
Compressor speed (rps)

~ 13.8

~ 31.7

32.3 ~ MAX

MIN MAX MIN MAX MIN MAX

To > 38°C
To > 28°C

To > 15°C
To > 5.5°C

To > 0°C
To > 38°C

To < 38°C

When To is abnormal

During
ECO mode

Compressor speed (rps) ~16.8 ~47.9 48.5 ~ MAX
To > 15°C
f3
f8
f9
To < 15°C

To < 5.5°C

To < –5.0°C
To > 15°C

To < 15°C

To < 5.5°C

To < –5.5°C

During
ECO mode

When To is abnormal

Outdoor fan speed (rpm)
Tap

10GAVP-E

13GAVP-E

16GAVP-E

Tap

10GAVP-E

13GAVP-E

16GAVP-E

200

700

300

700

390

700

450

700

500

750

840

920

500

750

840

920

600

750

840

920

600

– 30 –

Item
4. Capacity
control

Operation flow and applicable data, etc.

Description

The cooling or heating capacity depending on the load is
adjusted.
According to difference between the setup value of temperature and the room temperature, the capacity is adjusted by
the compressor revolution.

1) The difference between set
temperature on remote controller
(Ts) and room temperature (Ta)
is calculated.
2) According to the temperature
difference, the correction value of
Hz signal which determines the
compressor speed is set up.
3) The rotating position and speed
of the motor are detected by the
electromotive force occurred on
the motor winding with operation
of the compressor.
4) According to the difference
resulted from comparison of the
correction value of Hz signal with
the present operation Hz, the
inverter output and the commutation timing are varied.
5) Change the compressor motor
speed by outputting power to the
compressor.
* The contents of control
operation are same in cooling
operation and heating
operation

Remote controller

Indoor unit

Set temp. (Ts)

Room temp. (Ta)

Ts –Ta
Correction of Hz signal
Detection of electromotive force
of compressor motor winding
Detection of motor speed and rotor position
Correction value of Hz signal ≤ Operating Hz
Inverter output change
Commutation timing change
Change of compressor speed

5. Current release
control

This function prevents troubles on the electronic parts of the
compressor driving inverter.
This function also controls drive circuit of the compressor
speed so that electric power of the compressor drive circuit
does not exceed the specified value.
Outdoor temp. To

Outdoor unit inverter main
circuit control current

Setup of current release point

Operating current ≤
Setup value

High

Reduce compressor speed

Low
Current decrease
Capacity control continues.

Cooling current
release value

Outdoor temp.

Heating current
release value

6.45A

45˚C
40˚C

44˚C

16˚C

39˚C

11˚C

15.5˚C

6.75A

7.72A

8.47A

9.22A

10.5˚C

10.80A

– 31 –

1) The input current of the outdoor
unit is detected in the inverter
section of the outdoor unit.
2) According to the detected
outdoor temperature, the
specified value of the current is
selected.
3) Whether the current value
exceeds the specified value or
not is judged.
4) If the current value exceeds the
specified value, this function
reduces the compressor speed
and controls speed up to the
closest one commanded from the
indoor unit within the range
which does not exceed the
specified value.

Item

Indoor heat exchanger temperature

6. Release protective
control by temperature of indoor heat
exchanger

Operation flow and applicable data, etc.

(Prevent-freezing control for indoor heat exchanger)
In cooling/dry operation, the sensor of indoor heat
exchanger detects evaporation temperature and
controls the compressor speed so that temperature of
the heat exchanger does not exceed the specified
value.
Usual cooling capacity control
R
When the value is
in Q zone, the
compressor speed
is kept.

7˚C
Q
6˚C

1) When temperature of the indoor
heat exchanger drops below 5°C,
the compressor speed is
reduced. (P zone)
2) When temperature of the indoor
heat exchanger rises in the
range from 6°C to under 7°C, the
compressor speed is kept.
(Q zone)
3) When temperature of the indoor
heat exchanger rises to 7°C or
higher, the capacity control
operation returns to the usual
control in cooling operation.
(R zone)

5˚C

Reduction of compressor speed

(Prevent-overpressure control for refrigerating cycle)
In heating operation, the sensor of indoor heat exchanger detects condensation temperature and controls
the compressor speed so that temperature of the heat
exchanger does not exceed the specified value.

Indoor heat exchanger temperature

Description

Reduction of compressor speed
P
55˚C
50˚C

When the value is
in Q zone, the
compressor speed
is kept.

46˚C
R
Usual heating capacity control

– 32 –

1) When temperature of the indoor
heat exchanger rises in the
range from 50°C to 55°C, the
compressor speed is kept.
(Q zone)
When temperature of the indoor
heat exchanger drops in the
range from 46°C to under 55°C,
the compressor speed is kept.
(Q zone)
2) When temperature of the indoor
heat exchanger rises to 55°C or
higher, the compressor speed is
reduced. (P zone)
3) When temperature of the indoor
heat exchanger does not rise to
50°C, or when it drops below to
46°C, the capacity control
operation returns to the usual
control in heating operation.
(R zone)

Item

Operation flow and applicable data, etc.

7. Quick heating
control

This function quickens the starting of heating operation when indoor/outdoor temperature is low.
(Available only in heating operation)
When indoor temperature is low, this function stores
the heat by heating winding depended on the outdoor
temperature and then it enables the hot air blowing
out quickly.

The previous operation was heating and
2 hours passed after the operation had stopped.

YES
Winding is not heated.
Outdoor heat exchanger
temperature

Indoor temperature

Heating output for winding
–1˚C
–3˚C

OFF

–6˚C
–8˚C

20W or equivalent

(This function removes frost adhered to the outdoor
heat exchanger.)
The temperature sensor of the outdoor heat exchanger (Te sensor) judges the frosting status of the
outdoor heat exchanger and the defrost operation is
performed with 4-way valve reverse defrost system.

Start of heating operation
Outdoor heat exchanger temperature

Condition 1 :
The previous operation was heating.

Condition 3 :
The room temperature is 20°C or lower.
The indoor temperature sensor detects
the room temperature.
If the detected room temperature is 20°C
or lower, the outdoor heat exchanger
temperature sensor detects the outdoor
heat exchanger temperature. As shown in
the left figure, winding of the compressor
is heated for each division of the temperature ( for each outdoor temperature) and
the heat is stored.

20W or equivalent

8. Defrost control
(Only in heating
operation)

0’

When the following conditions are
satisfied, winding is heated by output
varied by the outdoor heat exchanger
temperature.

Condition 2 :
2 hours passed after operation stop.

In case of operation stop

20˚C

Description

10’ 15’

27’40”

34’

Operation time
(Minute)

–5˚C
C zone
–7˚C
A zone
–20˚C
B zone

*
* The minimum value of Te sensor 10 to 15 minutes
after start of operation is stored in memory as Te0.
Table 1

A zone

When Te0 - TE ≥ 2.5 continued for 2 minutes in A zone,
defrost operation starts.

B zone

When the operation continued for 2 minutes in B zone,
defrost operation starts.

C zone

When Te0 - TE ≥ 3 continued for 2 minutes in C zone,
defrost operation starts.

– 33 –

The necessity of defrost operation is
detected by the outdoor heat exchanger
temperature. The conditions to detect the
necessity of defrost operation differ in A,
B, or C zone each. (Table 1)

• Defrost operation in A to C zones
1) Stop operation of the compressor for
20 seconds.
2) Invert (ON) 4-way valve 10 seconds
after stop of the compressor.
3) The outdoor fan stops at the same time
when the compressor stops.
4) When temperature of the indoor heat
exchanger becomes 38°C or lower,
stop the indoor fan.

• Returning conditions from defrost
operation to heating operation
1) Temperature of outdoor heat exchanger
rises to +8°C or higher.
2) Temperature of outdoor heat exchanger
is kept at +5°C or higher for 80 seconds.
3) Defrost operation continues for
15 minutes.

1) Stop operation of the compressor for
approx. 50 seconds.
2) Invert (OFF) 4-way valve approx. 40
seconds after stop of the compressor.
3) The outdoor fan starts rotating at the
same time when the compressor starts.

Item

Description

Operation flow and applicable data, etc.

9. Louver control
1) Louver
position

This function controls the air direction of the indoor unit.
• The position is automatically controlled according to the operation mode (COOL/HEAT).
• The set louver position is stored in memory by the microcomputer, and the louver returns to the
stored position when the next operation is performed. (Cooling/heating memory position)
The angle of the louver is indicated as the horizontal angle is 0°.
When the louver closes fully, it directs approx. 49° upward.
Horizontal
(0˚)

Louver angle

1) Louver position in cooling operation
Powerful

Initial setting of “Cooling storage position”
Louver : Directs downward (9˚)

Room temp. (Ta) < Set temp. (Tsc) + 3.5

Room temp. (Ta) ≥ Set temp. (Tsc) + 3.5

Initial setting of “Cooling storage position”
Louver : Directs downward (9˚)

“Inclined blowing”
Louver : Directs downward (14˚)

Powerful YES
operation

Cooling/AUTO
(COOL)/DRY operation

Room temp. ≥ NO
Set temp. +3.5

Cooling memory
position

Room temp. ≥ Set temp. +3.5

YES

Cooling memory
position

YES

Inclined
blowing

2) Louver position in heating operation
ECO operation
Heating operation/
AUTO (HEAT)

Room temp. (Ta) < Set temp. (Tsc) – 3
or 25 minutes after start of operation

Initial setting of “Heating storage position”
Louver : Directs downward (76˚)

“Heating storage position”
Louver : Directs downward (76˚)

YES
ECO
operation

Heating operation

Room temp. ≥ NO
Set temp. –3.0

Horizontal
blowing

3) Swing

Inclined
blowing

“Cooling storage position”
Louver : Directs downward (9˚)

Horizontal
position

YES

Heating memory
position

YES

• The louver position can
be arbitrarily set up by
pressing [FIX] button.

Air direction
Blowing
downward

Room temp. ≥ Set temp. –3.0

Heating memory
position

2) Air direction adjustment

Room temp. (Ta) ≥ Set temp. (Tsc) – 3

Inclined
blowing

Horizontal
blowing

• Swing operation is performed in width 35° with the stop position as
the center.
• If the stop position exceeds either upper or lower limit position,
swing operation is performed in width 35° from the limit which the
stop position exceeded.

– 34 –

• Swing
When pressing
[SWING] button during
operation, the louver
starts swinging.

Item
10. ECO
operation

Operation flow and applicable data, etc.

Description

When pressing [ECO] button on the remote controller, a quiet
and mild operation is performed by reducing the fan speed and
the compressor speed.

This function operates the air conditioner with the difference
between the set and the room temperature as shown in the
following figure.
The time correction is performed for 8 minutes each.
(However, the first correction is performed 150 seconds after
start of the operation.)

TA
[˚C]
+4.0
+3.5
+3.0
+2.5
+2.0
+1.5
+1.0
+0.5
TSC
–0.5
–1.0
–2.0

Zone
12
11
10
9
8
7
6
5
4
3
2
1

Frequency
DRY max
*12
*11
*10
*9
*8
COOL min

OFF

Fan
L+ (W7)

L (W6)

Time correction

1) The room temperature (Tao) at
the start time of DRY operation is
detected.
2) According to difference between
the room temperature and the
set temperature (Tsc), the
operation starts with the conditions shown in the left figure.
Set temp.
(Tsc) = Set temp. on remote
controller (Ts) + (0.0 to 1.0)
3) If the room temperature is down
by 2°C or more, turn off the
compressor.

L– (W5)
±0

UL (W4)

–1 zone: min 1

* 12 (DRY max - COOL min) /6 x 5 + COOL min
* 11 (DRY max - COOL min) /6 x 4 + COOL min
* 10 (DRY max - COOL min) /6 x 3 + COOL min
* 9 (DRY max - COOL min) /6 x 2 + COOL min
* 8 (DRY max - COOL min) /6 x 1 + COOL min

→ Time Compressor
speed
0Hz

(Room temp. – Set temp.)

30 minutes
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
–4.0
–5.0
–6.0
–7.0
–8.0
–9.0
–10.0
–11.0

A
B

A zone
16Hz

B zone
16 to 52Hz

C zone
52Hz

– 35 –

1) The indoor fan speed is controlled within (W7) as maximum
value.
2) Setting the compressor speed to
Max. 52Hz, the temperature zone
in which the operation can be
performed with Max. 16Hz is
gradually widened after 30
minutes passed when starting
ECO operation.
3) The louver position is set
horizontally (Standard cooling
position) when the room temperature comes close to the set
temperature or when 25 minutes
passed after starting ECO
operation.

Item

Operation flow and applicable data, etc.

11. Temporary
operation

Description

Pressing [RESET] button starts the temporary operation of [AUTO] operation. When keeping [RESET]
button pressed for 10 seconds or more, the temporary
[COOL] operation is performed.

YES

Filter lamp ON

Press RESET button.

NO
NO

Did you press [RESET] button
for 3 seconds or more?

Temporary [AUTO] operation

YES
YES

Did you press [RESET] button
for 10 seconds or more?

1) When pressing [RESET] button, the
temporary [AUTO] operation starts.
2) When keeping [RESET] button pressed
for 3 seconds or more, Pi, Pi, Pi sound is
heard and [AUTO RESTART] control is
changed.
3) When keeping [RESET] button pressed
for 10 seconds or more, “Pi” sound is
heard and the temporary [COOL]
operation starts.
4) If the filter lamp goes on, press [RESET]
button to go off the filter lamp, and then
press [RESET] button again.
5) To stop the temporary operation, press
the button again.

NO
Switch to [AUTO RESTART] control.

12. Air
purifying
control

Temporary [COOL] Operation

This function generates nagative ion while cleaning the air in the room.
If air purifier-ON signal is received while the air conditioner stops, the air purifier starts operation,
and if it is received while the air conditioner operates, the air conditioner and the air purifier start
operation.
The air ion generator operates linked with the air purifying operation.
Operation button

Present status

PURE button

Air conditioner

Stop

Air purifier

AC operation*

Air purifier only

Stop (All)

AC + Air purifier

Air conditioner

AC + Air purifier

All stop

AC operation

All stop

Joint use of AC and air purifier

Air purifying operation

Louver*1

Fan speed *2

Cooling position

AUTO, L, L+, M, M+, H

* When the previous operation was the
operation of air conditioner + air purifier,
an operation of air conditioner + air purifier
starts by pushing AC button on the remote
controller.
(Operation of air conditioner + air purifier
is stored in memory.)
*1 Swing is available
*2 Fan speed is Fan Auto mode varies in
order, (M + 1) → (L) → (L–) → (SL).

AC + Air purifying operation Follows to AC operation Follows to AC operation

Sending air purifier-ON

Sending air purifier-OFF

Air conditioner stops

Air conditioner operates

Operation lamp ON

Start of air purifier-ON
*1

Memory position
of louver/COOL

Air conditioner +
air purifier operate

Air purifier operates

Air conditioner +
Air purifier operate

Operation lamp OFF

Filter-OFF

Fan stop

Air conditioner operates

*2
Fan ON

Air purifier-OFF

Air purifier ON

Louver close

Air purifying operation

All stop

– 36 –

Item

Operation flow and applicable data, etc.

1. Purpose
The air purifying control function is to
alert the user to trouble in the ionizing or
air purifying operation.

12. Air purifying control [Detection of abnormality]
Purifying operation

YES

2. Description
Trouble is determined to have occurred
(indicated by the FILTER indicator) in the
following four cases.
1) When a count of 1000H has been
reached on the timer
2) When the panel switch has been set to
OFF by the opening of the air inlet
grile, etc.
3) When an abnormal discharge caused
by a symptom such as the build-up of
dirt has been detected while the air
purifier is ON
4) When the electric dust collector has
not been installed correctly
* Trouble case (2) or (3) is deemed to
have occurred when the action
concerned continues for more than
one second.

Total operation
time 1000H
NO
Purifier power ON
NO

Error input
YES

Purifier power ON
1 minute or less

Filter lamp-OFF
continues.

YES

Filter lamp ON

Purifier power OFF

Purifier power ON
after 10 minutes
from the error input.

Filter lamp ON

Error input

YES

Purifier power OFF

1) Reset by RESET button.
2) Reset by RESET button or by the stop direction
from the remote controller.
* When the breaker is turned [ON] (In restart time
after power failure) or RESET button is pressed
while the FILTER indicator is turned on, the air
purifier is not turned on until the integrated
operation time of the indoor fan exceeds 1 hour
after operation start (It is nor the air purifier
operation time).
It is the safety measures considering an incomplete drain when electric dust collector has been
cleaned with water.
13. Discharge temperature control
Td value
117°C
112°C
108°C
105°C

98°C

Description

Control operation
Judges as an error and stops the compressor.
Reduce the compressor speed.
Reduce slowly compressor speed.
Keeps the compressor speed.
If the operation is performed with lower speed than one
commanded by the serial signal, speed is slowly raised
up to the commanded speed.
Operates with speed commanded by the serial signal.

– 37 –

3. Operation
The sequence that FILTER indicator is
turned on are described in the left
flowchart.
1) When 1000H timer counts up, the
FILTER indicator keeps lighting even if
the operation is stopped by the remote
controller.
The timer is stored in memory of the
microcomputer, and the operation time
is cleared by filter RESET button on
the indoor unit or a power failure.
(FILTER indicator goes off.)
2) A trouble detected within 1 minute
after activation of the air is immediately judged as an error and the
FILTER indicator goes on.
3) In case that 1 minute passed after
activation of the purifier, the purifier is
turned off while the PURE indicator
keeps ON. After 10 minutes passed,
restart the purifier and an error is
judged again.

1. Purpose
This function detects error on the
refrigerating cycle or error on the compressor, and performs protective control.
2. Operation
• Control of the compressor speed
The speed control is performed as
described in the left table based upon
the discharge temperature.

Item
14. Pulse motor
valve (P.M.V.)
control

Operation flow and applicable data, etc.

Description

This function controls throttle amount of the
refrigerant in the refrigerating cycle.
According to operating status of the air conditioner,
this function also controls the open degree of valve
with an expansion valve with pulse motor.

1) When starting the operation, move the
valve once until it fits to the stopper.
(Initialize)
* In this time, “Click” sound may be
heard.
2) Adjust the open degree of valve by super
heat amount. (SH control)
3) If the discharge temperature was excessively up, adjust the open degree of valve
so that it is in the range of set temperature.
(Discharge temp. control)
4) When defrost operation is performed, the
open degree of valve is adjusted according to each setup conditions during
preparation for defrost and during defrost
operation (4-way valve is inversed.).
5) To turn off the compressor while the air
conditioner stops by control of the
thermostat or by remote controller, adjust
the open degree of valve to the setup
value before stop of the compressor.

Starting up

Initialize

Move to
initial position

Compressor ON

SH control

Td
release control

PMV open degree control

Stop by
remote controller

Power OFF

Room temp. sensor
(Ta sensor) control

Defrost

* SH (Super Heat amount) =
Ts (Temperature of suction pipe of the compressor) –
Tc or Te (Heat exchanger temperature at evaporation side)
* PMV: Pulse Motor Valve

– 38 –

Item

Operation flow and applicable data, etc.

15. Clean operation

Unit now performing cooling or dry operation

Press “STOP” button

Only S.CLEAN indicator lights, and clean operation starts

Time set now elapses

Operation stops

• During clean operations: The louver opens
slightly. The indoor fan operates continuously at
a speed of 260 rpm.
Clean operation times
Operation mode

Cooling: Auto (cooling) Dry

Operation time

Description
1. Purpose
The clean operation is to minimize the
growth of mold, bacteria etc. by running
the fan and drying so as to keep the
inside of the air conditioner clean.
Clean operation
When the cooling or dry operation shuts
down, the unit automatically starts the
clean operation which is then performed
for the specified period based on duration
of the operation which was performed
prior to the shutdown, after which the
clean operation stops.
(The clean operation is not performed
after a heating operation.)
2. Operation
1) When the stop signal from the remote
controller is received, the S.CLEAN
indicator (green) on the main body
lights, and the clean operation starts.
(Neither the OPERATION indicator nor
the TIMER indicator light.)
2) The period of the clean operation is
determined by the duration of the
operation performed prior to the
reception of the stop code.
3) After the clean operation has been
performed for the specified period, the
unit stops operating.
Clean operation time

Up to 10 minutes

No clean operation
performed (0 minutes)

From 10 minutes up
to 1 hour

2 hours

1 hour or longer

4 hours

Heating: Auto (heating)
Auto (fan only)

No clean operation performed

Shutdown

• To stop an ongoing clean operation at any time
Press the start/stop button on the remote controller twice during the clean
operation. (After pressing the button for the first time, press it for the
second time without delay (within 10 minutes).)

– 39 –

Item

Operation flow and applicable data, etc.

Description

16. Clean operation Setting the clean operation release
release
Add J04 of the indoor P.C. board assembly.
* This cancels the auto restart function.

Hold down the auto operation switch on the indoor unit
for at least 3 seconds but not more than 10 seconds.

* J04 will be near the MCU so take
steps to ensure that it will not be
exposed to excessive levels of
heat.
Also take care to avoid solder
bridging with the surrounding
components.

The indoor unit’s buzzer emits three beeps, and
the OPERATION indicator flashes at 5 Hz intervals.

This completes the clean operation release setting.

Setting the clean operation
Cut J04 of the indoor P.C. board
* This step may be skipped if the auto restart function
is not required.

Hold down the auto operation switch on the indoor unit
for at least 3 seconds but not more than 10 seconds.

The indoor unit’s buzzer emits three beeps, and
the OPERATION indicator flashes at 5 Hz intervals.

This completes the clean operation setting.

Indoor P.C. board

J04

– 40 –

Item

Operation flow and applicable data, etc.

17. Select switch on
remote controller

1. Purpose
This operation is to operate only one
indoor unit using one remote controller.

Press the operation button
on the remote controller.

YES

Both indoor units
start operation.

Select “B” as the setting for
one of the two indoor units and
for the remote controller.
(See below for details.)

Unnecessary set
[Remote controller select]

HiPOWER

ECO

MEMO
1.3.5.9H

SWING

FIX

FAN

CLR
CLOCK

SLEEP
SET

Description

OFF

RESET
CHECK

Cutting direction

Jumper wire

2. Description
When operating one indoor unit in a
situation where two indoor units have
been installed in the same room or
nearby rooms, this operation prevents the
remote controller signal from being
received simultaneously by both units,
thus preventing both units from operating.
3. Operation
The indoor unit on which the remote
controller selection has been set to B
receives the signal of the remote controller also set to B.
(At the factory the remote controller
selection is set to A on all the indoor
units. There is no A setting display.)

Setting the remote controller
Switching between A and B is enabled by cutting the jumper wire
inside the battery box using pliers.
1) Slide open the remote controller cover and remove the
batteries.
2) Cut the jumper wire inside the battery compartment using
nippers.
• The jumper wire should not remain in contact after being cut.
Also, be careful not to let plastic scraps, jumper wire cuttings
or other debris enter the inside of the remote controller.
3) Insert the batteries. “B” appears in the remote controller
display.
* Even after the jumper wire has been cut, switching between
A and B is still possible by pressing the CHECK button and
FIX button together.
The A or B setting, which was switched by pressing the
CHECK button and FIX button together, is restored to the
setting established prior to the switching when the battery is
replaced or the RESET button is pressed.
Setting the selector switch on the main unit
• Remove the front panel, and then set the selector switch to “B”.
• After making the switch setting, remount the front panel.

Position of remote controller selector switch

When switching between
settings “A” and “B”, always
switch the indoor unit board and
the remote controller as a pair.
(Otherwise, the indoor unit will
not accept the remote
controller’s signals.)
Selector switch

– 41 –

9-3. Auto Restart Function
This indoor unit is equipped with an automatic restarting function which allows the unit to restart operating with
the set operating conditions in the event of a power supply being accidentally shut down.
The operation will resume without warning three minutes after power is restored.
This function is not set to work when shipped from the factory. Therefore it is necessary to set it to work.

9-3-1. How to Set the Auto Restart Function
To set the auto restart function, proceed as follows:
The power supply to the unit must be on ; the function will not set if the power is off.
Press the [RESET] button located in the center of the front panel continuously for three seconds.
The unit receives the signal and beeps three times.
The unit then restarts operating automatically in the event of power supply being accidentally shut down.

• When the unit is standby (Not operating)
Operation
Press [RESET] button for more than
three seconds. (Less than 10 seconds)

Motions
The unit is on standby.
↓
The unit starts to operate.
↓

The green indicator is on.

After approx. three seconds,

The unit beeps three times
and continues to operate.

The green indicator flashes
for 5 seconds.

If the unit is not required to operate at this time, press [RESET]
button once more or use the remote controller to turn it off.

• When the unit is in operation
Motions

Operation
Press [RESET] button for more than
three seconds. (Less than 10 seconds)

The unit is in operation.

The green indicator is on.

↓
The unit stops operating.
↓

The green indicator is turned off.

After approx. three seconds,

The unit beeps three times.

The green indicator flashes
for 5 seconds.

If the unit is required to operate at this time, press [RESET] button
once more or use the remote controller to turn it on.

• When the unit is turned on by this function, the louver will not swing even though it was swinging automatically
before shutting down.
• While the filter check indicator is on, the RESET button has the function of filter reset button.

– 42 –

9-3-2. How to Cancel the Auto Restart Function
To cancel auto restart function, proceed as follows :
Repeat the setting procedure : the unit receives the signal and beeps three times.
The unit will be required to be turned on with the remote controller after the main power supply is turned off.

• When the system is on stand-by (not operating)
Operation
Press [RESET] button for more than
three seconds. (Less than 10 seconds)

Motions
The unit is on standby.
↓
The unit starts to operate.
↓

The green indicator is on.

After approx. three seconds,

The unit beeps three times and continues to operate.
If the unit is not required to operate at this time, press [RESET]
button once more or use the remote controller to turn it off.

• When the system is operating
Operation
Press [RESET] button for more than
three seconds. (Less than 10 seconds)

Motions
The unit is in operation.

The green indicator is on.

↓
The unit stops operating.
↓

The green indicator is turned off.

After approx. three seconds,

The unit beeps three times.
If the unit is required to operate at this time, press [RESET] button
once more or use the remote controller to turn it on.

9-3-3. Power Failure During Timer Operation

9-4. FILTER Indicator

When the unit is turned off because of power failure
during timer operation, the timer operation is cancelled. In that case, set the timer operation again.

When the elapsed time reaches 1000 hours after air
purifier operation, the FILTER indicator lights.
After cleaning the filters, turn off the FILTER indicator.

NOTE :
The Everyday Timer is reset while a command signal
can be received from the remote controller even if it
stopped due to a power failure.

9-4-1. How to Turn Off FILTER Indicator
Press [RESET] button on the indoor unit.

NOTE :
If [RESET] button is pushed while the FILTER indicator is not lit, the indoor unit will start the automatic
operation.
When you want a temporary operation while the
FILTER lamp lights, press [RESET] button to turn off
the FILTER lamp. (See page 36)

– 43 –

9-5. Remote Controller and Its Fuctions
9-5-1. Parts Name of Remote Controller

1
2

4
5

7
8

Infrared signal emitter
Transmits signal to the indoor unit.
button
Press the button to start operation.
(A receiving beep is heard.)
Press the button again to stop operation.
(A receiving beep is heard.)
If no receiving sound is heard from the indoor unit,
press the button twice.

Mode select button (MODE)
Press this button to select a mode.
Each time you press the button, the modes cycle in
order from A : Auto changeover control,
: Cool,
: Dry,
: Heat and back to A.
(A receiving beep is heard.)
Temperature button ( TEMP )
.. The temperature setting is increased to 30°C.
.. The temperature setting is reduced to 17°C.
(A receiving beep is heard.)

15
16

Fan speed button (FAN)
Press this button to select the fan speed.
When you select AUTO, the fan speed is automatically adjusted according to the room temperature.
You can also manually select the desired fan speed
from five available settings.
(LOW , LOW+
, MED
, MED+
,
HIGH
) (A receiving beep is heard.)

High power button (Hi POWER)
Press this button to start high power operation.
Memory button (MEMO)
Press this button to ready for storing the settings.
Hold down the button for more than 3 seconds to
store the setting indicated on the remote controller
mark is displayed.
and until the
Automatic operation button (AUTO)
Press this button to operate the air conditioner
automatically. (A receiving beep is heard.)
Economy button (ECO)
Press this button to operate the air conditioner
economically.
PRESET button
Press this button to operate the air conditioner to
the settings stored using the MEMO button.
PURE button (PURE)
Press this button to start the electrical air purifying
operation.
Press the button again to stop operation.

18 Sleep time button (SLEEP)
Press this button to start the sleep timer (OFF
timer) operation.
You can select the OFF timer time from among four
settings (1, 3, 5 or 9 hours).

Auto louver button (SWING)
Press this button to swing the louver.
(A receiving beep is heard.)
Press this button again to stop the louver from
swinging. (A receiving beep is heard.)

Set louver button (FIX)
Press this button again to adjust the air flow
direction. (A receiving beep is heard.)
ON timer button (ON)
Use this button to change the clock and ON timer
times.
To move up the time, press of the “ON ON ”
button.
To move down the time, press of the “ON ON ”
button.
OFF timer button (OFF)
Use this button to change the OFF timer times.
To move up the time, press of the “OFF ”
button.
To move down the time, press of the “OFF OFF ”
button.
OFF

Cancel button (CLR)
Press this button to cancel the ON timer and OFF
timer. (A receiving beep is heard.)

Reserve button (SET)
Press this button to store the time settings.
(A receiving beep is heard.)

4
17

TEMP

2
7
12
6
11
8
– 44 –

AUTO

PURE

MODE

PRESET

HiPOWER

ECO

MEMO
1.3.5.9H

SWING

FIX

FAN

CLR
CLOCK

SLEEP
SET

RESET
CHECK

OFF

14
16
15
5
13
18
10
9

9-5-2. Name and Functions of Indications on Remote Controller
[Display]
All indications, except for the clock time indicator, are displayed by pressing the

1
2
3
4
5

Transmission mark
This transmission mark indicates when the
remote controller transmits signals to the indoor
unit.
Mode indicator
Indicates the current operation mode.
(AUTO : Automatic control, A : Auto changeover
: Cool,
: Dry,
: Heat)
control,

Temperature indicator
Indicates the temperature setting.
(17°C to 30°C)

PURE indicator
Shows that the electrical air purifying operation is
in progress.
FAN speed indicator
Indicates the selected fan speed.
AUTO or five fan speed levels
(LOW , LOW+
, MED
, MED+
HIGH
) can be shown.
Indicates AUTO when the operating mode is
: Dry.
either AUTO or

1
3

TIMER and clock time indicator
The time setting for timer operation or the clock
time is indicated.
The current time is always indicated except
during TIMER operation.
Hi-POWER indicator
Indicates when the Hi-POWER operation starts.
Press the Hi-POWER button to start and press it
again to stop the operation.
(MEMORY) indicator
Flashes for 3 seconds when the MEMO button is
pressed during operation.
mark is shown when holding down the
The
button for more than 3 seconds while the mark is
flashing.
Press another button to turn off the mark.
ECO indicator
Indicates when the ECO is in activated.
Press the ECO button to start and press it again
to stop operation.
A, B change indicator remote controller
When the remote controller switching function is
set, “B” appears in the remote controller display.
(When the remote controller setting is “A”, there is
no indication at this position.)

2
4

button.

AUTO

• In the illustration, all indications are shown for
purposes of explanation.
During operation, only the relevant indicators are
shown on the remote controller.

– 45 –

9-6. Hi-POWER Mode
([Hi-POWER] button on the remote controller is pressed)
When [Hi-POWER] button is pressed while the indoor unit is in Auto, Cooling or Heating operation, Hi-POWER
mark is indicated on the display of the remote controller and the unit operates as follows.

1. Automatic operation
• The indoor unit operates in according to the current operation.
2. Cooling operation
• The preset temperature drops 1°C.
(The value of the preset temperature on the remote controller does not change.)
• If the difference between the preset temperature and the room temperature is big, the horizontal louver
moves to the Hi-POWER position automatically.
Then when the difference between them gets smaller, the horizontal louver returns automatically.
3. Heating operation
• The preset temperature increases 2°C.
(The value of the preset temperature on the remote controller does not change.)
4. The Hi-POWER mode can not be set in Dry operation

– 46 –

10. INSTALLATION PROCEDURE
10-1. Safety Cautions
For the rear left and left piping
Hook

47 mm or more
1 Installation plate

Wall

Hook
140 mm or more
74 mm
or more
Hook

Insert the cushion between
the indoor unit and wall, and
tilt the indoor unit for better
installation work.

7 Mounting screw

Do not allow the drain hose
to become slack.

Cut the piping
hole slightly
sloped
5 Zeolite-plus filter
Z Shield pipe
(for extension
drain hose)

Make sure the drain hose is
sloped downward.
6 Plasma pure filter

The auxiliary piping can be
connected at the left, rear left,
rear right, right, bottom right or
bottom left as shown below.

Air filters
Y

80 mm or more only
when unobstructed to
the front and both sides

2 Wireless
remote controller
100 mm or more
from wall

In principle,
leave open

(C)

Right

50 mm or more
from wall
Rear
right

(D)

4 Remote controller holder
(Mounting holes on both
left and right sides)

Left
Bottom left
Bottom right Rear left

As shown in the figure, position power cord and
connecting cable downward, and lead out along
piping connection port.

200 mm
or more
(B)
(A)

8 Remote controller
holder mounting screw
250 mm or more
from wall
When installing the outdoor unit,
leave open in at least two of
directions (A), (B), (C) and (D)
shown in the right figure.
Ensure sufficient space
to allow drainage

Insulate the refrigerant pipes
separately, not together.

Power cord
Extension drain hose
(Option: RB-821SW)
6 mm thick heat resisting
polyethylene foam

Before installing the wireless remote controller
• With the remote controller cover
removed, correctly load the
supplied batteries while
observing their polarity.

Cover
3 Batteries

2 Wireless remote controller

– 47 –

10-2. Optional Parts, Accessories and Tools
10-2-1. Optional Installation Parts
Part Code

Parts name

Q’ty

Refrigerant piping
Indoor unit name

Liquid side (Outer diameter)

Gas side (Outer diameter)

RAS-B10GKVP-E, B13GKVP-E

6.35 mm

9.52 mm

RAS-B16GKVP-E

6.35 mm

12.7 mm

1 ea.

Shield pipe (for extension drain hose) (polyethylene foam, 6 mm thick)

Attachment bolt arrangement of outdoor unit
• Secure the outdoor unit with the attachment bolts and
nuts if the unit is likely to be exposed to a strong wind.
• Use Ø8 mm or Ø10 mm anchor bolts and nuts.
If it is necessary to drain the defrost water, attach drain
nipple to the base plate of the outdoor unit before
installing it.

Elongated
drain hole

Suction side

()

Diffuser

Drain hole
()

10-2-2. Accessory and Installation Parts
Part No.

Part name (Q’ty)

Part No.

Part name (Q’ty)

Installation plate × 1

Part No.

Zeolite-plus filter × 1

Wireless remote control × 1

Plasma pure filter × 1

Part name (Q’ty)

Drain nipple* × 1
(RAS-10GAVP-E,
13GAVP-E, 16GAVP-E)

Water-proof rubber cap* × 2
(RAS-10GAVP-E,
13GAVP-E, 16GAVP-E)

Parts marked with asterisk (*) are
packaged with the outdoor unit.

Battery × 2

Mounting screw Ø4 × 25L × 6

Name

Remote control holder × 1

Owner’s manual
Remote control
holder mounting screw
Ø3.1 × 16L × 2

This model is not equipped with an extension drain hose.

– 48 –

Installation manual
Important information and warning*
B/W strips*
(Energy efficiency labels)

10-2-3. Installation/Servicing Tools
Changes in the product and components
In the case of an air conditioner using R410A, in order to prevent any other refrigerant from being charged
accidentally, the service port diameter of the outdoor unit control valve (3 way valve) has been changed.
(1/2 UNF 20 threads per inch)
• In order to increase the pressure resisting strength of the refrigerant piping flare processing diameter and size
of opposite side of flare nuts has been changed. (for copper pipes with nominal dimensions 1/2 and 5/8)
New tools for R410A
New tools for R410A

Applicable to R22 model

Changes

Gauge manifold

As pressure is high, it is impossible to measure by means of
conventional gauge. In order to prevent any other refrigerant from
being charged, each port diameter has been changed.

Charge hose

In order to increase pressure resisting strength, hose materials
and port size have been changed (to 1/2 UNF 20 threads per inch).
When purchasing a charge hose, be sure to confirm the port size.

Electronic balance
for refrigerant charging

As pressure is high and gasification speed is fast, it is difficult to
read the indicated value by means of charging cylinder, as air
bubbles occur.

Torque wrench
(nominal diam. 1/2, 5/8)

The size of opposite sides of flare nuts have been increased.
Incidentally,
a common wrench is used for nominal diameters 1/4 and 3/8.

By increasing the clamp bar’s receiving hole, strength of spring in
the tool has been improved.

Flare tool (clutch type)

Gauge for projection
adjustment

—

Used when flare is made by using conventional flare tool.

Vacuum pump adapter

Connected to conventional vacuum pump. It is necessary to use
an adapter to prevent vacuum pump oil from flowing back to the
charge hose. The charge hose connecting part has two ports-one
for conventional refrigerant (7/16 UNF 20 threads per inch) and
one for R410A. If the vacuum pump oil (mineral) mixes with R410A
a sludge may occur and damage the equipment.

Gas leakage detector

Exclusive for HFC refrigerant.

• Incidentally, the “refrigerant cylinder” comes with the refrigerant designation (R410A) and protector coating in the
U. S’s ARI specified rose color (ARI color code: PMS 507).
• Also, the “charge port and packing for refrigerant cylinder” require 1/2 UNF 20 threads per inch corresponding to
the charge hose’s port size.

– 49 –

10-3-2. Drilling a Hole and Mounting Installation Plate

10-3. Indoor Unit
10-3-1. Installation Place

Drilling a hole
When install the refrigerant pipes from the rear.

The center of the
pipe hole

Pipe
hole

65
42 mm

• A place which provides enough spaces around the
indoor unit as shown in the diagram.
• A place where there are no obstacle near the air
inlet and outlet.
• A place which allows easy installation of the piping
to the outdoor unit.
• A place which allows the front panel to be opened.
• The indoor unit shall be installed so that the top of
the indoor unit is positioned at least 2m in height.
• Also, avoid putting anything on the top of the
indoor unit.

CAUTION
• Direct sunlight on the indoor unit wireless
receiver should be avoided.
• The microprocessor in the indoor unit should
not be too close to r-f sources.
(For details, see the owner's manual.)

Fig. 10-3-2
1. After determining the pipe hole position on the
installation plate ( ð ) drill the pipe hole (Ø65
mm) at a slight downward slant to the outdoor
side.

Remote controller
• Should be placed where there are no obstacles,
such as curtains, that may block the signal.
• Do not install the remote controller in a place
exposed to direct sunlight or close to a heating
source, such as a stove.
• Keep the remote controller at least 1 m away from
the nearest TV set or stereo equipment.
(This is necessary to prevent image disturbances or
noise interference.)
• The location of the remote controller should be
determined as shown below.

NOTE :
• When drilling into a wall that contains a metal lath,
wire lath or metal plate, be sure to use a pipe hole
brim ring sold separately.

Mounting the installation plate

Indoor unit

Anchor bolt holes

(Side view)

(Top view)

25 mm

Indoor unit

91 mm
Pipe hole
Reception
range

Remote
controller

Reception
range

Pipe hole
Indoor unit

Remote controller

7 Mounting screw

*: Axial distance

Fig. 10-3-3

Fig. 10-3-1

– 50 –

1 Installation plate

When the installation plate is directly
mounted on the wall
1. Securely fit the installation plate onto the wall by
screws with the upper and lower catches, that
hold the indoor unit, facing out.
2. To mount the installation plate on a concrete wall
use anchor bolts. Drill the anchor bolt holes as
illustrated in the above figure.
3. Install the installation plate horizontally and level.

10-3-3. Electrical Work
1. The supply voltage must be the same as the
rated voltage of the air conditioner.
2. Prepare a power source for the exclusive use of
the air conditioner.

NOTE :
• Wire type :
More than H07RN-F or 245IEC66 (1.0mm²)

CAUTION

• This appliance can be connected to a main
circuit breaker in either of the following two
ways.
1. Connection to fixed wiring:
A switch or circuit breaker which disconnects all poles and has a contact separation of at least 3 mm must be incorporated
in the fixed wiring. An approved circuit
breaker or switch must be used.
2. Connection with power supply plug:
Attach power supply plug with power cord
and plug it into wall outlet. An approved
power supply cord and plug must be used.

When installing the installation plate with mounting screw, do not use the anchor bolt hole.
Otherwise the unit may fall down and result in
personal injury and property damage.

Anchor bolt
Projection
15mm or less

NOTE :
• Perform wiring work being sure the wire length is
long enough.

Fig. 10-3-4

10-3-4. Wiring Connection

5 mm dia. hole

How to connect the connecting cable
7 Mounting screw
Ø4 × 25L
Clip anchor
(local parts)

Fig. 10-3-5

CAUTION
Failure to securely install the unit may result in
personal injury and/or property damage if the
unit falls.
• In case of block, brick, concrete or similar type
walls, drill 5 mm dia. holes in the wall.
• Insert clip anchors for the mounting screws.

NOTE :
• Install the installation plate using mounting screws
between 4 to 6, being sure to secure all four
corners.

Wiring the connecting cable can be carried
out without removing the front panel.
1. Remove the air inlet grille. Open the air inlet grille
upward and pull it toward you.
2. Remove the terminal cover and cord clamp.
3. Insert the connecting cable (or as according to
local regulations/codes) into the pipe hole on the
wall.
4. Pull the connecting cable through the cable slot
on the rear panel so that it protrudes about
15 cm out of the front.
5. Insert the connecting cable fully into the terminal
block and secure it tightly with screws.
6. Tightening torque: 1.2 N•m (0.12 kgf•m)
7. Secure the connecting cable with the cord clamp.
8. Attach the terminal cover, rear plate bushing and
air inlet grille on the indoor unit.

– 51 –

10-3-5. Piping and Drain Hose Installation

CAUTION
• Be sure to refer to the wiring system diagram
labeled inside the front panel.
• Check local electrical regulations for any
specific wiring instructions or limitations.

Piping and drain hose forming
• Since condensation results in machine trouble,
make sure to insulate both the connecting pipes
separately.
(Use polyethylene foam as insulating material.)

Terminal cover

Rear left

Die-cutting
Front panel slit

Bottom left

Cord clamp

Left
Terminal block

Bottom right
Right

Earth wire

Fig. 10-3-10

Connecting cable

Fig. 10-3-6

Terminal block

Piping preparation

Screw

Changing
drain hose

Rear right
Screw

1. Die-cutting front panel slit
Cut out the slit on the left or right side of the front
panel for the left or right connection and the slit
on the bottom left or side of thefront panel for the
bottom left or right connection with a pair of
nippers.
2. Changing drain hose
For left connection, left-bottom connection and
rear-left connection’s piping, it is necessary to
relocate the drain hose and drain cap.

Fig. 10-3-7

How to remove the drain cap
Clip drain cap with needle-nose pliers, and pull out.

Connecting cable

About 15 cm

Fig. 10-3-8

Fig. 10-3-11

70 mm
10 mm

How to remove the drain hose

Earth line

The drain hose is secured in place by a screw.
Remove the screw securing the drain hose, then pull
out the drain hose.
10 mm
50 mm

Fig. 10-3-9

NOTE :
WIRE TYPE : more than H07 RN-F or 245 IEC 66.
(1.0mm²)

Screw

Drain hose

Fig. 10-3-12

– 52 –

How to attach the drain cap

In case of bottom right or bottom left piping

1. Insert hexagonal wrench (4 mm).

• After making slits on the front panel with a knife or
similar tool, cut them out with a pair of nippers or
an equivalent tool.

Slit

Fig. 10-3-16

4 mm

Fig. 10-3-13

Left-hand connection with piping
2. Firmly insert drain cap.

No gap

Insert a hexagon
wrench (Ø4mm)

Do not apply lubricating oil
(refrigerant machine oil)
when inserting the drain cap.
If applied, deterioration and
drain leakage of the drain
plug may occur.

Bend the connecting pipes so that they are positioned within 43 mm above the wall surface.
If the connecting pipes are positioned more than
43 mm above the wall surface, the indoor unit may
be unstable.
When bending the connecting pipe, make sure to
use a spring bender to avoid crushing the pipe.

Refer to the table below for the bending
radius of each connection pipe.

Fig. 10-3-14

How to attach the drain hose
Always use the original screw that secured the
drain hose to the unit. If using a different screw
may cause water to leak.
Insert the drain hose firmly until the connector
contacts with the insulation, then secure it in place
using the original screw.

Outer diameter

Bending radius

6.35 mm

30 mm

9.52 mm

40 mm

12.7 mm

50 mm

To connect the pipe after installation of the
unit (figure)
(To the front flare)
220 mm

Gas side

170 mm

CAUTION

Liquid side

Securely insert the drain hose and drain cap;
otherwise, water may leak.

43 mm

R30 or less (Ø6.35), R40 or less (Ø9. 52), R50 or less (Ø12. 7)
Use polishing (polyethylene core or the like for bending pipe).

In case of right or left piping
• After making slits on the front panel with a knife or
similar tool, cut them out with a pair of nippers or
an equivalent tool.

Outward form of indoor unit

Use a screwdriver handle, etc.

Fig. 10-3-17

Slit

Fig. 10-3-15

NOTE :
If the pipe is incorrectly bent, the indoor unit may be
unstable on the wall.
After passing the connecting pipe through the pipe
hole, connect the connecting pipe to the auxiliary
pipes and wrap the facing tape around them.

– 53 –

10-3-7. Drainage

CAUTION

1. Run the drain hose at a downward sloped angle.

• Bind the auxiliary pipes (two) and connecting
cable with facing tape tightly.
In case of leftward piping and rear-leftward
piping, bind the auxiliary pipes (two) only with
facing tape.

NOTE :
• Hole should be made at a slight downward slant
on the outdoor side.
Do not rise the drain hose.

Indoor unit
Auxiliary pipes

Connecting
cable

Do not form the drain hose
into the waved shape.

50 mm
or more

Installation
plate

Fig. 10-3-18

Do not put the
drain hose end
into water.

• Carefully arrange the pipes so that none of the
pipes stick out of the rear plate of the indoor unit.
• Carefully connect the auxiliary pipes and
connecting pipes to each other and cut off the
insulating tape wound on the connecting pipe
to avoid double-taping at the joint, moreover,
seal the joint with the vinyl tape, etc.
• Since condensation can result in machine
performance trouble, be sure to insulate both
connecting pipes. (Use polyethylene foam as
insulating material.)
• When bending a pipe, be careful not to crush it.

Do not put the drain
hose end in the
drainage ditch.

Fig. 10-3-21
2. Put water in the drain pan and make sure that the
water is being drained outside.
3. When connecting extension drain hose, insulate
the connection part of extension drain hose with
shield pipe.
Shield pipe

10-3-6. Indoor Unit Installation

Drain hose Inside the room

1. Pass the pipe through the hole in the wall, and
hook the indoor unit on the installation plate at
the upper hooks.
2. Swing the indoor unit to right and left to confirm
that it is firmly hooked on the installation plate.
3. While pressing the indoor unit onto the wall, hook
it at the lower part on the installation plate.
Pull the indoor unit toward you to confirm that it is
firmly hooked on the installation plate.
1

Fig. 10-3-22

CAUTION
Install the drain pipe for proper drainage.
Improper drainage can result in water dripping
inside the room.

Hook here
1 Installation
plate

Push (unhook)

Hook

Fig. 10-3-19

Extension drain hose

This air conditioner has been designed to drain
water collected from condensation which forms on
the back of the indoor unit, to the drain pan.
Therefore, do not locate the power cord and other
parts at a high place than the drain guide.

• For detaching the indoor unit from the installation
plate pull the indoor unit toward you while pushing
the bottom up at the specified places.

Wall
Drain
guide

Space for
pipes
Push

Push

Fig. 10-3-23

Fig. 10-3-20

– 54 –

10-4. Outdoor Unit

Precautions for adding refrigerant

10-4-1. Installation Place
• A place which provides enough space around the
outdoor unit as shown in the diagram.
• A place which can bear the weight of the outdoor
unit and does not allow an increase in noise level
and vibration.
• A place where the operation noise and discharged
air do not disturb neighbors.
• A place which is not exposed to a strong wind.
• A place free of combustible gases.
• A place which does not block a passageway.
• When the outdoor unit is to be installed in an
elevated position, be sure to secure its feet.
• This air conditioner accepts a connection piping
length of up to 25 m.
• There is no need to add refrigerant as long as
the length of the connection piping is 15 m or
less.
• You will need to add 20 g of refrigerant per meter
of added connection piping for installations
requiring connection piping to be between 16 m
to 25 m.
• An allowable height level is up to 10 m.
• A place where the drain water does not cause any
problems.

• Use a scale having a precision with at least 10 g
per index line when adding the refrigerant.
Do not use a bathroom scale or similar instrument.
• Use liquid refrigerant when refilling the refrigerant.
Since the refrigerant is in liquid form, it can fill
quickly.
Therefore, perform the filling operation carefully
and insert the refrigerant gradually.

CAUTION
1. Install the outdoor unit without anything
blocking the discharging air.
2. When the outdoor unit is installed in a place
always exposed to strong winds like on the
coast or on a high story of a building, secure
the normal fan operation using a duct or a
wind shield.
3. Especially in windy areas, install the unit to
prevent the admission of wind.
4. Installation in the following places may result
in trouble.
Do not install the unit in such places.
• A place full of machine oil.
• A saline-place such as the coast.
• A place full of sulfide gas.
• A place where high-frequency waves are
likely to be generated, such as from audio
equipment, welders, and medical equipment.

Strong
wind

Fig. 10-4-1

– 55 –

10-4-2. Draining the Water

10-4-3. Refrigerant Piping Connection

• Holes are provided on the base plate of the
outdoor unit to ensure that the defrost water
produced during heating operations is drained off
efficiently.
If a centralized drain is required when installing the
unit on a balcony or wall, follow the steps below to
drain off the water.
1. Proceed with water-proofing by installing the
water-proof rubber caps in the 2 elongated
holes on the base plate of the outdoor unit. [How
to install the water-proof rubber caps]
1) Place four fingers into each cap, and insert
the caps into the water drain holes by pushing
them into place from the underside of the
base plate.
2) Press down on the outer circumferences of
the caps to ensure that they have been
inserted tightly.
(Water leaks may result if the caps have not
been inserted properly, if their outer circumferences lift up or the caps catch on or wedge
against something.)

10 Water-proof rubber caps
(supplied with the outdoor unit)

Flaring
1. Cut the pipe with a pipe cutter.

90˚

Obliquity

Roughness

Fig. 10-4-4
2. Insert a flare nut into the pipe, and flare the pipe.

• Projection margin in flaring : A (Unit : mm)
Rigid (Clutch type)
Outer dia. of
copper pipe

R410A
tool used

Conventional
tool used

6.35

0 to 0.5

1.0 to 1.5

9.52

0 to 0.5

1.0 to 1.5

12.7

0 to 0.5

1.0 to 1.5

Imperial (Wing nut type)

Base plate
9 Drain nipple

Outer dia. of
copper pipe

R410A

6.35

1.5 to 2.0

9.52

1.5 to 2.0

12.7

2.0 to 2.5

Die

Pipe

Fig. 10-4-5

Fig. 10-4-2

• Flaring size : B (Unit : mm)
2. Install the drain nipple and a commercially
available drain hose (with 16 mm inside diameter), and drain off the water.
(For the position where the drain nipple is
installed, refer to the installation diagram of the
indoor and outdoor units.)
• Check that the outdoor unit is horizontal, and
route the drain hose at a downward sloped
angle while ensuring that it is connected tautly.
Base plate

Warp

Fig. 10-4-6
B

+0
–0.4

Outer dia. of copper pipe
R410A

R22

6.35

9.1

9.0

9.52

13.2

13.0

12.7

16.6

16.2

9 Drain nipple
Commercially available
drain hose

Do not use ordinary garden hose, but one can
flatten and prevent water from draining.

• In case of flaring for R410A with the conventional
flare tool, pull it out approx. 0.5 mm more than that
of R22 to adjust to the specified flare size.
The copper pipe gauge is useful for adjusting
projection margin size.

Fig. 10-4-3

– 56 –

Tightening Connection

Use a vacuum pump

Align the centers of the connecting pipes and tighten
the flare nut as much as possible with your fingers.
Then tighten the nut with a wrench and torque
wrench as shown in the figure.
Half union

Flare nut

Externally
threaded side

Internally
threaded side

Use a wrench
to secure.

Use a torque wrench
to secure.

Fig. 10-4-7

CAUTION
• Do not apply excessive force.
Otherwise, the nut may break.
(Unit : N·m)
Outer dia. of copper pipe

Tightening torque

Ø6.35 mm

14 to 18 (1.4 to 1.8 kgf•m)

Ø9.52 mm

33 to 42 (3.3 to 4.2 kgf•m)

Ø12.7 mm

50 to 62 (5.0 to 6.2 kgf•m)

Be sure to use a vacuum pump with counter-flow
prevention function so that oil inside the pump does
not flow back into the air conditioner pipes when the
pump stops. (If oil inside the vacuum pump enters
into the air conditioner circuit which uses R410A,
trouble with the refrigeration system may develop.)
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.
6. Open fully the valve stem of the packed valves
(both sides of Gas and Liquid).
7. Remove the charging hose from the service port.
8. Securely tighten the caps on the packed valves.

• Tightening torque for connection of flare pipe
The pressure of R410A is higher than R22.
(Approx. 1.6 times.) Therefore securely tighten the
flare pipes which connect the outdoor unit and the
indoor unit with the specified tightening torque
using a torque wrench.
If any flare pipe is
Flare at
indoor unit
incorrectly connected,
side
it may cause not only
a gas leakage but also
trouble in the
refrigeration cycle.

Compound
pressure
gauge
-101kPa
(-76cmHg)

Pressure gauge

Handle Lo
Charge hose
(For R410A only)

Connecting
pipe

Manifold valve
Handle Hi
(Keep full closed)
Charge hose
(For R410A only)
Vacuum pump
adapter for
counter-flow
prevention
(For R410A only)

Vacuum
pump

Packed valve at liquid side
Packed valve at gas side
Service port
(Valve core (Setting pin))

Flare at
outdoor unit
side

Fig. 10-4-8
Fig. 10-4-9

CAUTION

10-4-4. Evacuating
After the piping has been connected to the indoor
unit, perform the air purge.

• IMPORTANT POINTS FOR PIPING WORK
1. Keep dust and moisture from entering the
pipes.
2. Tighten connections carefully (between pipes
and unit).
3. Evacuate the air in the connecting pipes
using a VACUUM PUMP.
4. Check for gas leaks at all connections.

AIR PURGE
Evacuate the air in the connecting pipes and in
the indoor unit using a vacuum pump.
Do not use the refrigerant in the outdoor unit.
For details, see the vacuum pump manual.

– 57 –

Packed Valve handling precautions
• Open the valve stem all the way; but do not try to
open it beyond the stopper.
• Securely tighten the valve stem cap with torque in
the following table:

1 2 3
10
10

40
Gas side (Ø12.7 mm)

50 to 62 N•m (5.0 to 6.2 kgf•m)

Gas side (Ø9.52 mm)

33 to 42 N•m (3.3 to 4.2 kgf•m)

Liquid side (Ø6.35 mm)

14 to 18 N•m (1.4 to 1.8 kgf•m)

Service port

14 to 18 N•m (1.4 to 1.8 kgf•m)

L N
10

Earth line

Connecting
cable

Power cord

Earth line

Fig. 10-4-12

Hexagonal wrench is required.
m

Model RASPower source

10GAVP-E

13GAVP-E

220 – 240 V ~50 Hz
220 V ~60 Hz

Maximum running
current

Fig. 10-4-10

Installation fuse
rating

16GAVP-E

12 A
25A (D type

)

10-4-5. Wiring Connection

Power cord

H07RN-F or 245IEC66 (1.5 mm²)

1. Remove the valve cover, the electric parts cover
and the cord clamp from the outdoor unit.
2. Connect the connecting cable to the terminal as
identified by the matching numbers on the
terminal block of indoor and outdoor unit.
3. Insert the power cord and the connecting cable
fully into the terminal block and secure it tightly
with screws.
4. Insulate the unused cords (conductors) from
water entering in the outdoor unit. Locate them
so that they do not touch any electrical or metal
parts.
5. Secure the power cord and the connecting cable
with the cord clamp.
6. Attach the electric parts cover and the valve
cover on the outdoor unit.

Connection cable

H07RN-F or 245IEC66 (1.0 mm²)

CAUTION
• Incorrect wiring connection may cause electrical parts to burn out.
• Be sure to comply with local regulations/codes
when running the wire from outdoor unit to
indoor unit.
(Size of wire and wiring method etc.)
• Every wire must be securely connected.
• This installation fuse (25A D type
)
must be used for the power supply line.
• If incorrect or incomplete wiring is carried out,
fire or smoke may result.
• Prepare the power supply for the exclusive use
of the air conditioner.
• This product can be connected to the main
breaker.
Connection to fixed wiring:
A switch which disconnects all poles and has a
contact separation of at least 3 mm must be
incorporated in the fixed wiring when connecting to a main breaker circuit.

Stripping length of connecting cable
Terminal block

Connecting cable

Power cord

Fig. 10-4-11

– 58 –

10-5-4. Remote Controller Selector Switch
Setting

10-5. Test Operation
10-5-1. Gas Leak Test
• Check the flare nut connections for gas leaks with
a gas leak detector and/or soapy water.
Check places for
flare nut connections
(indoor unit)

Remote controller selector switch

Valve cover

Electric parts

Check places
for outdoor unit

Fig. 10-5-1

10-5-2. Test Operation
To test the system, press and hold RESET button for
10 sec. (There will be one short beep.)

• If two indoor units are installed in the same room
or adjoining rooms, the second unit can inadvertently receive a remote controller signal and start
operation when operating the first unit. This can be
prevented by setting one of the indoor units and
the corresponding remote controller to the B
setting (the A setting is the default setting).
1. Setting the selector switch on the main unit
• Remove the front panel, and then set the
selector switch to “B”.
• After making the switch setting, remount the
front panel.
2. Setting the remote controller
1) Slide open the remote controller cover and
remove the batteries.
2) Cut the jumper wire inside the battery
compartment using nippers.
• The jumper wire should not remain in
contact after being cut. Also, be careful
not to let plastic scraps, jumper wire
cuttings or other debris enter the inside of
the remote controller.
3) Insert the batteries. “B” appears in the
remote controller display.
3. Check that the indoor unit can be operated by
the modified remote controller.

Position of remote controller selector switch

Fig. 10-5-2

10-5-3. Auto Restart Setting
This product is designed so that, after a power
failure, it can restart automatically in the same
operating mode as before the power failure.

Selector switch

Fig. 10-5-3

Information
The product was shipped with Auto Restart
function in the OFF position.
Turn it ON as required.

Cutting direction
ECO

HiPOWER

MEMO

Jumper wire

1.3.5.9H

SWING

FIX

FAN

CLR
CLOCK

How to Set the Auto Restart

SET
ON

RESET
CHECK

• Press and hold the RESET button for about 3
seconds. After 3 seconds, three short electric
beeps will be heard to inform you that the Auto
Restart has been selected.
• To cancel the Auto Restart, follow the steps
described in the section Auto Restart Function on
Owner’s Manual.

SLEEP

OFF

When switching between settings “A” and
“B”, always switch the indoor unit board
and the remote controller as a pair.
(Otherwise, the indoor unit will not
accept the remote controller’s signals.)

Fig. 10-5-4

– 59 –

11. HOW TO DIAGNOSE THE TROUBLE
The pulse motor circuits are mounted to both indoor and outdoor units. Therefore, 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.)
Table 11-1
No.

Troubleshooting Procedure

Page

No.

Troubleshooting Procedure

Page

First Confirmation

How to Check Simply the Main Parts

Primary Judgment

Troubleshooting

Judgment by Flashing LED of Indoor Unit

How to Diagnose Trouble in Outdoor Unit

Self-Diagnosis by Remote Controller

How to Check Simply the Main Parts

Judgment of Trouble by Every Symptom

How to Simply Judge Whether Outdoor
Fan Motor is Good or Bad

K Precautions when handling the new inverter (3DV Inverter)
CAUTION: HIGH VOLTAGEN
The high voltage circuit is incorporated.
Be careful to do the check service, as the electric shock may be caused in case of touching parts on the
P.C. board by hand.
The new inverter (3DV inverter) will be incorporated starting with this unit.
(3DV: 3-shunt Discrete Vector control)

K The control circuitry has an uninsulated construction.
G-Tr

Compressor

Fan motor
Photocoupler
Shared potential

FET
(6IN1)

MCU

Hall device
Photocoupler

JAVP-E series (insulated type)
IGBT × 6

Compressor

Fan motor

Shared potential
Driver
MCU

Amplifier

FET × 6

Driver
Amplifier

GAVP-E, EAVP-E series (uninsulated type)
Fig. 11-1

– 60 –

CAUTION
A high voltage (equivalent to the supply voltage) is also energized to ground through the
sensors, PMV and other low-voltage circuits. The sensor leads and other wires are covered
with insulated tubes for protection. Nevertheless, care must be taken to ensure that these
wires are not pinched.
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.
Laying the board flat on an electrically conductive object (such as the top panel of the air conditioner's
outdoor unit) while a charge is still retained by the electrolytic capacitors of the inverter's main circuit may
cause short-circuiting between the electrolytic capacitors and secondary circuit components and result in
damage to the components.

Sensor leads

Fig. 11-2
Do NOT lay the circuit board assembly flat.

K Precautions when inspecting the control section of the outdoor unit
NOTE :
A large-capacity electrolytic capacitor is used in the outdoor unit controller (inverter). Therefore, if the power
supply is turned off, charge (charging voltage DC280 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. Discharge the electrolytic capacitor completely by using soldering iron, etc.

< Discharging method >
1. Remove the inverter cover (plating) by opening four mounting claws.
2. As shown below, connect the discharge resistance (approx. 100Ω40W) or plug of the soldering iron to
voltage between + – terminals of the C14 (“CAUTION HIGH VOLTAGE” is indicated.) electrolytic capacitor
(500µF/400V) on P.C. board, and then perform discharging.
Discharging position
(Discharging period
10 seconds or more)

Plug of
soldering iron

Inverter cover
P. C. board
(Soldered surface)

Fig. 11-3

– 61 –

11-1. First Confirmation
11-1-1. Confirmation of Power Supply
Confirm that the power breaker operates (ON) normally.

11-1-2. Confirmation of Power Voltage
Confirm that power voltage is AC 220–230–240 ± 10%.
If power voltage is not in this range, the unit may not operate normally.

11-1-3. Operation Which is not a Trouble (Program Operation)
For controlling the air conditioner, the program operations are built in the microcomputer as described in the
following table.
If a claim is made for running operation, check whether or not it meets to the contents in the following table.
When it does, we inform you that it is not trouble of equipment, but it is indispensable for controlling and maintaining of air conditioner.
Table 11-1-1
No.

Operation of air conditioner

Description

When power breaker is turned “ON”, the
operation indicator (Green) of the indoor
unit flashes.

The OPERATION lamp of the indoor unit flashes when
power source is turned on. If [START/STOP] button is
operated once, flashing stops.
(Flashes also in power failure)

Compressor may not operate even if the
room temperature is within range of
compressor-ON.

The compressor does not operate while compressor
restart delay timer (3-minutes timer) operates.
The same phenomenon is found after power source has
been turned on because 3-minutes timer operates.

In Dry and ECO mode, FAN (air flow)
display does not change even though FAN
(air flow select) button is operated.

The air flow indication is fixed to [AUTO].

Increasing of compressor motor speed
stops approx. 30 seconds after operation
started, and then compressor motor speed
increases again approx. 30 seconds after.

For smooth operation of the compressor, the compressor motor speed is restricted to Max. 41 rps for 2 minutes, and Max.91 rps for 2 minutes to 3 minutes, respectively after the operation has started.

In AUTO mode, the operation mode is
changed.

After selecting Cool or Heat mode, select an operation
mode again if the compressor keeps stop status for 15
minutes.

In HEAT mode, the compressor motor
speed does not increase up to the maximum speed or decreases before the
temperature arrives at the set temperature.

The compressor motor speed may decrease by hightemp. release control (Release protective operation by
temp.-up of the indoor heat exchanger) or current
release control.

– 62 –

11-2. Primary Judgment
To diagnose the troubles, use the following methods.
1) Judgment by flashing LED of indoor unit
2) Self-diagnosis by service check remote controller
3) Judgment of trouble by every symptom
Firstly use the method 1) for diagnosis. Then, use the method 2) or 3) to diagnose the details of troubles.

11-3. Judgment by Flashing LED of Indoor Unit
While the indoor unit monitors the operation status of the air conditioner, if the protective circuit operates, the
contents of self-diagnosis are displayed with block on the indoor unit indication section.
Table 11-3-1
Item

Check
code

Block display

Description for self-diagnosis

OPERATION (Green)
Flashing display (1 Hz)

Power failure (when power is ON)

OPERATION (Green)
Flashing display (5 Hz)

Protective circuit operation for indoor P.C. board

OPERATION (Green)
TIMER (Yellow)
Flashing display (5 Hz)

Protective circuit operation for connecting cable
and serial signal system

OPERATION (Green)
FILTER (Orange)
Flashing display (5 Hz)

Protective circuit operation for outdoor P.C. board

OPERATION (Green)
TIMER (Yellow)
FILTER (Orange)
Flashing display (5 Hz)

Protective circuit operation for others
(including compressor)

Indoor indication
lamp flashes.

Which lamp
does flash?

NOTES :
1. The contents of items B and C and a part of item E are displayed when air conditioner operates.
2. When item B and C, and item B and a part of item E occur concurrently, priority is given to the block of item B.
3. The check codes can be confirmed on the remote controller for servicing.

– 63 –

11-4. Self-Diagnosis by Remote Controller (Check Code)
1. If the lamps are indicated as shown B to E in Table 11-3-1, execute the self-diagnosis by the remote controller.
2. When the remote controller is set to the service mode, the indoor controller diagnoses the operation condition and indicates the information of the self-diagnosis on the display of the remote controller with the check
codes. If a fault is detected, all lamps on the indoor unit will flash at 5Hz and it will beep for 10 seconds
(Beep, Beep, Beep ... ). The timer lamp usually flashes (5Hz) during self-diagnosis.

11-4-1. How to Use Remote Controller in Service Mode

Press [CHECK] button with a tip of pencil to set the
remote controller to the service mode.
• “
” is indicated on the display of the remote
controller.

Press [ON ] or [OFF ] button
If there is no fault with a code, the indoor unit will beep
once (Beep) and the display of the remote controller will
change as follows :
•••

AUTO

PURE
TEMP
MODE

• The TIMER indicator of the indoor unit flashes continuously.
(5 times per 1 sec.)

PRESET

HiPOWER

ECO

• Check the unit with all 52 check codes (
as shown in Table-11-4-1.

MEMO
1.3.5.9H

SWING

FIX

FAN

CLR
CLOCK

• Press [ON ] or [OFF
code backward.

SLEEP
SET

)

] button to change the check

OFF

RESET

If there is a fault, the indoor unit will beep for 10
seconds (Beep, Beep, Beep...).

CHECK

Note the check code on the display of the remote
controller.
Alphanumeric characters are
used for the check codes.
is 5.
is 6.
is A.
is B.
is C.
is D.

• 2-digits alphanumeric will be indicated on the display.
• All indicators on the indoor unit will flash.
(5 times per 1 sec.)

Press [START/STOP] button to release the service mode.
• The display of the remote controller returns to as it
was before service mode was engaged.

Time shortening method.
1. Press SET button while pushing CHECK button.
2. Press [START/STOP] button.

Fig. 11-4-1

– 64 –

11-4-2. Caution at Servicing
1. After servicing, press the START/STOP button to return to the normal mode.
2. After servicing by the check code, turn off breaker of the power supply, and turn on breaker of the power
supply again so that memory in the microcomputer returns the initial status.
However, the check codes are not deleted even if the power supply is turned off because they are stored in
the fixed memory.
3. After servicing, press [CLR] button under check mode status and then send the check code “7F” to the
indoor unit. The error code stored in memory is cleared.

Table 11-4-1
Block distinction
Check
code

Block
Indoor P.C.
board etc.

Operation of diagnosis function
Check
code

Air
conditioner
status

Cause of operation

Judgment and action
Remarks

Short-circuit or disconnection of the room
temperature sensor
(TA sensor).

Operation
continues.

Displayed when
error is detected.

1. Check the room temp. sensor.
2. When the room temp. sensor is
normal, check P.C. board.

Being out of place,
disconnection, shortcircuit, or migration of
heat exchanger sensor
(TC sensor)

Operation
continues.

Displayed when
error is detected.

1. Check heat exchanger sensor.
2. When heat exchanger sensor is
normal, check P.C. board.

Lock of indoor fan or
trouble on the indoor fan
circuit

All off

Displayed when
error is detected.

1. Check the motor.
2. When the motor is normal,
check P.C. board.

Not
displayed

Trouble on other indoor
P.C. boards

Operation
continues.

Displayed when
error is detected.

Replace P.C. board.

Connecting
cable and
serial signal

Return serial signal is not
sent to indoor side from
operation started.
1) Defective wiring of
connecting cable
2) Operation of compressor thermo Gas
shortage Gas leak

Operation
continues.

Flashes when
trouble is detected
on Return serial
signal, and normal
status when signal
is reset.

1. When the outdoor unit never
operate:
1) Check connecting cable, and
correct if defective wiring.
2) Check 25A fuse of inverter
P.C. board.
3) Check 3.15A of inverter P.C.
board.
2. To display [Other] block during
operation, check compressor
thermo. operation and supply
gas (check gas leak also).
3. Unit operates normally during
check.
If return serial signal does not
stop between indoor terminal
board 2 and 3, replace inverter
P.C. board.
If signal stops between indoor
terminal board 2 and 3, replace
indoor P.C. board.

– 65 –

Operation of diagnosis function

Block distinction
Check
code

Block
Outdoor P.C.
board

Check
code

Air
conditioner
status

Cause of operation

Remarks

Judgment and action

Inverter over-current
protective circuit
operates. (Short time)

All off

Displayed when
error is detected.

Even if trying operation again, all
operations stop immediately. :
Replace P.C. board.

Position-detect circuit
error or short-circuit
between windings of
compressor

All off

Displayed when
error is detected.

1. Even if connecting lead wire of
compressor is removed,
position-detect circuit error
occurred. : Replace P.C. board.
2. Measure resistance between
wires of compressor, and
perform short-circuit. : Replace
compressor.

Current-detect circuit
error

All off

Displayed when
error is detected.

Even if trying operation again, all
operations stop immediately. :
Replace P.C. board.

Being out of place,
disconnection or shortcircuit of the outdoor
heat exchanger sensor
(TE) or suction temp.
sensor (Ts)

All off

Displayed when
error is detected.

1. Check sensors (TE, TS).
2. Check P.C. board.

Disconnection or shortcircuit of discharge
temp. sensor

All off

Displayed when
error is detected.

1. Check discharge temp. sensor
(TD).
2. Check P.C. board

Outdoor fan drive
system error

All off

Displayed when
error is detected.

Position-detect error, over-current
protective operation of outdoor fan
drive system, fan lock, etc. :
Replace P.C. board or fan motor.

Not
displayed

Outdoor heat exchanger
temp. sensor error

Operation
continues

Outdoor P.C.
board

Compressor drive output All off
error, Compressor error
(lock, missing, etc.),
Break down

Others
(including
compressor)

Return serial signal has
been sent when
operation started, but it
is not sent from halfway.
1) Compressor thermo.
operation
Gas shortage
Gas leak
2) Instantaneous power
failure

Operation
continues

——
Displayed when
error is detected.

1. Check outdoor temp. sensor
(TO).
2. Check P.C. board.
When 20 seconds passed after
start-up, position-detect circuit error
occurred. : Replace compressor.
Trouble on P.M.V.

Flashes when
1. Repeat Start and Stop with
trouble is detected
interval of approx. 10 to 40
on return serial
minutes. (Code is not displayed
signal, and normal
during operation.)
status when signal
Supply gas.
is reset.
(Check also gas leak).
2. Unit operates normally during
check.
If return serial signal does not
stop between indoor terminal
block 2 and 3, replace inverter
P.C. board.
If signal stops between indoor
terminal block 2 and 3, replace
indoor P.C. board.

Compressor does not
All off
rotate.
(Current protective
circuit does not operate
when a specified time
passed after compressor
had been activated.)

Displayed when
error is detected.

1. Trouble on compressor
2. Trouble on wiring of compressor
(Missed phase)

Discharge temp.
exceeded 117°C

All off

Displayed when
error is detected.

1. Check dischage temp. sensor
(TD).
2. Gas leakage
3. Trouble on P.M.V.

Break down of
compressor

All off

Displayed when
error is detected.

1. Check power voltage.
(220–230–240 V +10%)
2. Overload operation of refrigeration cycle
Check installation condition
(Short-circuit of outdoor diffuser).

4-way valve inverse error Operation
continues
(TC sensor value
lowered during heating
operation.)

– 66 –

1. Check 4-way valve operation.
——

11-5. Judgment of Trouble by Every Symptom
11-5-1. Indoor Unit (Including Remote Controller)
(1) Power is not turned on (Does not operate entirely)

1. Is the supply voltage normal?
2. Is the normal voltage provided to the outdoor unit?
3. Is the crossover cable connected properly?
4. Is the fuse (F01) blown?

Operation
Check Item
Considerable principle cause

Turn off power supply once, and
5 second later, turn it on again.

Measures

Item by symptoms

Is OPERATION indicator flashing?
YES
Is it possible to turn on
power supply by pushing
[START/STOP] button
on remote controller?
YES

Does transmission mark
on remote controller flash
normally,and is its signal
transmitted properly?
YES

NO
Remote controller is defective.

Refer to (5) “Troubleshooting
for remote controller”.

Unit operates normally.

Is fuse (F01)
of indoor control
board blown?

YES

Parts (R04, R05, DB01, C01,
C03, IC01 and T01) are defective.

Does fan
YES
motor connector
between CN10 1 –
3 short-circuit?

NO
NO

Is voltage
(DC12V or 5V)
indicated on rear of
indoor control
board normal?

Is DC310–340V
supplied between
CN10 1 – 3 ?

NO
YES
Microcomputer
is defective.

Replace main
P.C. board

Parts of a power supply circuit
defective.

YES

Replace fan
motor.

• Be sure to disconnect the motor connector CN10 after shut off the power supply, or it will be a cause of
damage of the motor.

(2) Power is not turned on though Indoor P.C. board is replaced

Turn on power supply.

NO
Does OPERATION indicator flash?
YES

Is wired correctly to white and
black lead wires of terminal block?

NO
Correct wiring.

YES
To item of
“Power supply is not turned on”.

– 67 –

(3) Only the indoor motor fan does not operate

1. Is it possible to detect the power supply voltage (AC220–240V) between Q and R on the terminal block?
2. Does the indoor fan motor operate in cooling operation?
(In heating operation, the indoor fan motor does not operate for approximately 10 minutes after it is turned
on, to prevent a cold air from blowing in.)
Turn off power
supply once, and
turn it on again.

Does fan motor
continue to operate?

Is it possible to detect
YES DC
1V or more between

5 + and 3 – of

Peplace indoor
fan motor.

motor connector (CN10).

YES
Start to operate
indoor unit in cooling
operation at airflow
level “LOW”.

Does indoor
fan operate?

YES

Is it possible to detect
DC 310–340V between
1 + and 3 – of motor
connector (CN10).

YES
(Motor connection condition)
Is it possible to detect DC 15V
between 4 + and 3 – of
motor connector (CN10).

Turn off indoor unit and remove
connector from motor.
Then push START/STOP button
on remote controller to stop
flashing lamp on indoor unit.

YES
Is it possible to detect
DC 15V between 4 +
and 3 – of motor
connector (CN10).

Change airflow level
to “HIGH”.

Peplace main
P.C. board.

YES
Start to operate the
indoor unit in except
heating operation.
NO
At this time, is it possible to
detect DC 1V or more between
5 + and 3 – of motor
connector (CN10)?

YES

Is it possible to
change airflow level
to “HIGH”?

Turn off indoor unit and
remove connector from motor.
Then start to operate indoor
unit with remote controller.

Start to operate the
indoor unit in except
heating operation.
At this time, is it possible
to detect DC 1V or more
between 5 + and 3 –
of motor connector (CN10)?
(Check this condition
within 15 seconds after
starting unit.)

YES

YES
Is it possible to
rotate cross-flow fan by
hand properly?

Peplace
bearing.

YES

Fan motor
operates normally.

Turn off indoor unit
and rotate cross-flow
fan by hand when the
unit is on standby.
At this time, is it possible to
detect DC 1V or more
between 5 + and 3 –
of motor connector
(CN10).

YES

– 68 –

(4) Indoor fan motor automatically starts to rotate by turning on power supply

The IC is built in the indoor fan motor. Therefore the P.C. board is also mounted to inside of the motor.
If the P.C. board is soldered imperfectly or the IC is defective, the fan motor may automatically rotate by turning
on power supply.

1. Remove the front panel. (Remove 2 screws.)
2. Remove the cover of the fan motor lead wires.
3. Check DC voltage with CN10 connector while the fan motor is rotating.
NOTE :
• Do not disconnect the connector while the fan motor is rotating.
• Use a thin test rod.

Indoor fan starts rotating when power supply is turned on.
P.C. board
CN10

(Check output DC voltage of fan motor on P.C. board.)

6 (Blue)
Yellow
Measure voltage between 3 (GND : BLACK)
and 5 (V line : YELLOW) of motor connector (CN10)
while indoor fan motor is rotating.

5 (Yellow)
4 (White)

Black

3 (Black)
2

–

1 (Red)

DC 1.0V or more

Under DC 1.0V
DC

P.C. board is defective.

Motor is defective.

Replace P.C. board.

Replace motor.

– 69 –

(5) Troubleshooting for remote controller

Check that A or B selected on the main unit is matched with A or B selected on the remote controller.

The unit does not beep at all.
Push the START/STOP button. Operation lamp on indoor
unit is not indicated.
NO

Is transmission
mark indicated?
YES

Is receiver
on indoor unit
exposed to
direct sunlight?

Push RESET button
on remote controller
with tip of pencil.

YES
Is there any
thyristor
fluorescent light
nearby?

Does indoor unit
operate when moving
remote controller
near receiver or
indoor unit?

YES

YES
Batteries are
exhausted.

Push the START/
STOP button
NO

Does indoor unit
start to operate by
automatic restart
function?

Is transmission
mark indicated?

YES

YES
NO

Does radio sound
is affected by remote
controller when a signal is
transmitted at distance of
5 cm from radio?

Does indoor unit
beep and operate?
YES

YES

Remote controller
is defective.

P.C. board
is defective.

Avoid direct
sunlight.

Keep indoor unit
away from thyristor
fluorescent light.

Replace
P.C. board.

Replace
batteries.

NOTE : After replacing batteries,
push the RESET button
with a tip of a pencil.

– 70 –

Normal
operation

Replace
remote controller.

11-5-2. Wiring Failure (Interconnecting and Serial Signal Wire)
(1) Outdoor unit does not operate
1) Is the voltage between R and S of the indoor terminal block varied?
Confirm that transmission from indoor unit to outdoor unit is correctly performed based upon the following diagram.
NOTE:
• Measurement should be performed 2 minutes and 30 seconds after starting of the operation.
• Be sure to prepare a diode for judgment.

Terminal block at indoor side
Red

S5277G or equivalent (G or J type)
(Diode with rated voltage of 400V
or more is acceptable.)

S5277G
White

2
1

Terminal block

Tester

Normal time
: Voltage swings between DC15 and 60V. ...................Inverter Assembly check (11-8-1.)
Abnormal time : Voltage does not vary.

(2) Outdoor unit stops in a little while after operation started
Select phenomena described below.
1) The outdoor unit stops 10 to 20 minutes after operation started, and 10 minutes or more are required to
restart the unit.

Gas circulation amount is down.

Gas shortage
Gas leak

Measure gas pressure.

Pipe clogging

Thermo. operation of compressor

2) If the unit stops once, it does not operate until the power will be turned on again.

To item of Outdoor unit does not operate.

3) The outdoor unit stops 10 minutes to 1 hour after operation started, and an alarm is displayed.
(Discharge temp. error check code 03, 1E Sensor temp. error check code 02, 1C)

Gas leak
P.M.V. is defective.

Refer to the chart in 11-6.

Miswiring of connecting wires of indoor/outdoor units
Clogging of pipe and coming-off of TC sensor

– 71 –

11-6. Check Code 1C (Miswiring in indoor/outdoor units) and 1E

Gas leakage,
disconnection of TS/TC
sensors (Check code 02, 1C)

Discharge temp. error,
gas leakage
(Check code 03, 1E)

Valve drive check

Is coil of the pulse motor valve
(P.M.V.) correctly set?

Set it correctly.

YES

Is connecter of coil connected to inverter?

Set it correctly.

YES

Is positioning sound of valve (sound hitting to stopper) heard
from valve when the air conditioner starts the operation after turning off power
of the air conditioner once?

Replace coil valve.

YES

Are temp. sensors of indoor/outdoor units correctly set to the holder?
NOTE :
The temperature sensors which are used to control pulse motor valve
include indoor heat exchanger sensor (TC), outdoor heat exchanger temp.
sensor (TE), outdoor suction temp. sensor (TS) and outdoor sensor (TO).

Set it correctly.

YES

Gas amount check and valve clogging check

Remove TC sensor connector from the P.C. board in indoor unit.
(Remove connector from the P.C. board.)
Operate the air conditioner in COOL mode by TEMP button
(“Beep” sound is heard if keeping pushed for 10 seconds.).
The operation enters temporary operation mode which fixes opening degree of compressor speed.
Check condensation at outlet of PMV, and then check operating pressure from the service port.

Existence of condensation at outlet of P.M.V.
If there is condensation at outlet (1/4 inch=Ø6.35mm valve side),
the valve is clogged.

Check the operating pressure from service port, and add gas if pressure is low.

– 72 –

YES

Replace valve.

Add gas.

11-7. Troubleshooting
11-7-1. How to Check Whether the Air Purifier is Good or Not
Turn off the power breaker once,
and turn on again after 10 seconds.

Does the OPERATION indicator flash?

To item “Power supply is not turned on”

Primary check

YES
Turn off the power breaker and remove
CN34 (Micro switch connector).
Short-circuit between 1 and 2 pin
of CN34 at PC side, and turn on the
power breaker after 10 seconds.

Is DC12V applied
between 1 (Red/DC12V) and
(Brown/GND) of CN1 of the
high-voltage generator?

Is DC12V applied
between 1 (+) and 2 (–)
of CN33 of the main
P.C. board (MCC5020)?

YES

Is there conduction of
micro-switch connector under
OFF status of the micro-switch
(Front panel opened)?

YES

Replace the main P.C. board (MCC5020)

Micro-switch is stuck
Replace micro-switch.

NO
Is there conduction of
micro-switch connector under
ON status of the micro-switch
(Front panel closed)?

• Conduction check of micro-switch

Micro-switch malfunction

YES

Push the switch
ON → ON
Release the switch
→ OFF

1) Check operation while short-circuiting CN34 of the main P.C. board.
2) Perform air purifying operation by the remote controller.
• In this time, check that the remote controller is in status which is shortened by time on
the reactivation preventive timer and all display indicators go on for approx. 3 seconds
when a signal is received.
on the reactivation preventive timer is not shortened,
( Ifthetime
high-voltage is not applied to electrode of the air purifier for approx. 1 hour. )
• While the air purifier operates, check that the fan speed [AUTO] is not displayed.
(Because the power ON/OFF is controlled on the program)
3) Be sure not to touch the electric dust collector, ionizer, or ionized wire unit with the human body.
NO

Does the indoor fan rotate?

Tester

To item “Only indoor fan does not operate”

YES
Does the PURE indicator (Blue) or
the FILTER indicator (Orange) go on?

Replace the main P.C. board (MCC5020).

Operation check

YES
Does the PURE indicator
go off within 2 seconds after
it was ON, and does the FILTER
indicator (Orange) go on?

Is DC-5V to DC-10V
applied between
4 (Brown/Negative voltage)
and 2 (Brown/GND)
of CN33 of the main
P.C. board?

YES

• How to check output of the air purifier

Collector
output

YES
Are the electric dust
NO
collector and ionizer dried?
(Electrode check)

Dry the electric
dust collector
and ionizer.

YES

GND
Referring to the right figure, check the
high-output voltage of the air filter unit.
(NOTE)
Use an exclusive high voltage tester;
otherwise the tester may be broken.

Be sure not to come
to contact to the gray
part or not to touch
the ionized cables.

Ionizer
output
High-voltage tester

YES
Is output of the ionizer
approx. 4.0 kV to 4.8 kV?
Is output of the collector
approx. 3.0 kV to 3.8 kV?

Refer to items, cleaning and check
for the electric dust collector/ionizer/
ionized wire units.
When the ionized wire is
disconnected or when dirt is
not cleaned even cleaned,
replace each unit.

(

)

Replace the high-voltage generator.

YES

Are the electric dust
collector/ionizer/ionized
wire units dirty?
Is an abnormal sound
(cracking noise) heard
from the electrode?

– 73 –

No trouble

11-7-2. How to Check Whether the Minus Ion Generator is Good or Not

Turn off the power breaker once,
and turn on again after 10 seconds.

Does the OPERATION indicator flash?

To item “Power supply is not turned on”

Primary check

YES
Turn off the power breaker and remove
CN34 (Micro switch connector).
Short-circuit between 1 and 2 pin
of CN34 at PC side, and turn on the
power breaker after 10 seconds.
Is DC12V applied
between 1 (Red/DC12V) and
2 (Brown/GND) of CN1 of the
high-voltage generator
in the air purifier?
YES
Is there conduction of
micro-switch connector under
OFF status of the micro-switch
(Front panel opened)?

YES

Replace the power P.C. board
(MCC5020) or the housing assembly.

Micro-switch is stuck
Replace micro-switch.

NO
Is there conduction of
micro-switch connector under
ON status of the micro-switch
(Front panel closed)?

Micro-switch malfunction

• Conduction check of micro-switch

YES
ON
1) Check operation while short-circuiting CN34 of the main P.C. board.
2) Perform air purifying operation by the remote controller.
• In this time, check that the remote controller is in status which is shortened by time on
the reactivation preventive timer and all display indicators go on for approx. 3 seconds
when a signal is received.
on the reactivation preventive timer is not shortened,
( Ifthetime
high-voltage is not applied to electrode of the air purifier for approx. 1 hour. )
• While the air purifier operates, check that the fan speed [AUTO] is not displayed.
(Because the power ON/OFF is controlled on the program)
3) Be sure not to touch the electrode with the human body.

Does the indoor fan rotate?

Push the switch
→ ON
Release the switch
→ OFF

Tester

To item “Only indoor fan does not operate”

YES
Does the PURE indicator (Blue) or
the FILTER indicator (Orange) go on?

Replace the main P.C. board (MCC5020).

Operation check

YES
Does the PURE indicator
go off within 2 seconds after
it was ON, and does the FILTER
indicator (Orange) go on?

YES

To item “How to check whether
the air purifier is good or not”

• How to check output of minus ion

Referring to the right figure, check the
high-voltage output of the air ionizer.
In this time, peel the thermal insulator, and attach
it to the original position after check operation.
NOTE :
Use an exclusive high voltage tester; otherwise
the tester may be broken.

high-voltage
unit

NO
Does the electrode
output approx. –6kV?

YES

No trouble

Electrode

NO
Replace the
high-voltage generator
GND

High-voltage tester

– 74 –

11-8. How to Diagnose Trouble in Outdoor Unit
11-8-1. Summarized Inner Diagnosis of Inverter Assembly
Table 11-8-1
Diagnosis/Process flowchart

Item

Contents

Preparation

Turn “OFF” the power supply
breaker, and remove 3P
connector which connects
inverter and compressor.

Remove connector
of compressor.

Check 25A fuse
(Part No.F01).

Check

OK
Replace fuse.

• Check whether 25A fuse
on the control board
assembly is blown or not.
(F01)

Check
electrolytic
capacitor, diode
block (DB01),
etc.

Discharging position
(Discharging period
10 seconds or more)

Operation

YES

Measurement

Turn on the power breaker,
and operate the air conditioner in COOL mode by time
shortening.
Measure terminal voltage of
the electrolytic capacity.
760µF:400WV × 3

Remove connector
CN300 of outdoor fan
motor, and using a
tester, check resistance
value between every
phases at motor side.

Check
Stop

Check
Measurement

Replace
outdoor
fan motor.

Plug of
soldering
iron

Check
electrolytic
capacitor, diode
(DB01),
etc.

Does outdoor
fan rotate?

If fuse was blown, be sure to
check the electrolytic
capacitor and diode block.
(DB01)
• Connect discharge
resistance (approx. 100Ω,
40W) or soldering iron
(plug) between +, –
terminals of the electrolytic capacitor (760µF) of
C14 (with printed CAUTION HIGH VOLTAGE) on
P.C. board.

Check

Check
terminal voltage
of electrolytic
capacitor.

Summary

OK if 760µF →
DC280 to 380V
Remove CN300 while
pushing the part indicated
by an arrow because CN300
is a connector with lock.

After operation, turn off the
power breaker after 2
minutes 20 seconds passed,
and discharge the electrolytic capacitor by soldering
iron.
Check voltage between
motor phases.
• Is not winding between QR‚ R-S, or Q-S opened
or short-circuited?
• Is not frame grounded with
Q, R, or S?

– 75 –

→ Resistance between
phases should be
approx. 55 to 77Ω
→ Should be 10MΩ or
more.

Diagnosis/Process flowchart

Item

Contents

Check

Check winding resistance
between phases of compressor, and resistance between
outdoor frames by using a
tester.

Replace control
board assembly.

Check
compressor
winding
resistance.

• Is not grounded.

→ OK if 10MΩ or more

• Is not short-circuited
between windings.

 → OK if 0.51Ω → 0.57Ω
 (Check by a digital tester.)


• Winding is not opened.

Replace
control board.

Summary

Remove connector CN300 of
the outdoor fan motor, turn
on the power supply breaker,
and perform the operation.
(Stops though activation is
prompted.)

Operation

Replace
compressor.

Check operation within 2
minutes 20 seconds after
activation stopped.

11-9. How to Check Simply the Main Parts
11-9-1. How to Check the P.C. Board (Indoor Unit)
(1) Operating precautions
1) When removing the front panel or the P.C. board, be sure to shut off the power supply breaker.
2) When removing the P.C. board, hold the edge of the P.C. board and do not apply force to the parts.
3) When connecting or disconnecting the connectors on the P.C. board, hold the whole housing. Do not pull
at the lead wire.
(2) Inspection procedures
1) When a P.C. board is judged to be defective, check for disconnection, burning, or discoloration of the
copper foil pattern or this P.C. board.
2) The P.C. board consists of the following 2 parts
a. Main P.C. board part :
DC power supply circuit (5V, 12V, 15V), Indoor fan motor control circuit, CPU and peripheral circuits,
buzzer, and Driving circuit of louver.
b. Indication unit of infrared ray receiving infrared ray receiving circuit, LED :
To check defect of the P.C. board, follow the procedure described below.

– 76 –

(3) Check procedures
Table 11-9-1
No.

Procedure

Check points

Turn off the power supply breaker
and remove the P.C. board
assembly from electronic parts
base. Remove the connecting
cables from the terminal block.

Check whether or not the fuse (F01)
is blown.

Impulse voltage was applied or the
indoor fan motor short-circuited.

Remove the connector of the
motor and turn on the power
supply breaker. If OPERATION
indicator flashes (once per
second), it is not necessary to
check steps (1 to 3) in the right
next column.

Check power supply voltage :
1. Between No. 1 and No. 3 of CN23
(AC 220–240V)
2. Between
and
of C03
(DC 310–340V)
3. Between
of C10 and output
side of IC08 (DC 15V)
4. Between 12V and GND
5. Between 5V and GND

1. The terminal block or the crossover
cable is connected wrongly.
2. The capacitor (C01), line filter
(L01), resistor (R05), or the diode
(DB01) is defective.
3. IC01, IC08 and T01 are defective.
4. IC01, IC08 and T01 are defective.
5. IC01, IC08, IC07 and T01 are
defective.

Push [START/STOP] button once
to start the unit. (Do not set the
mode to On-Timer operation.)

Check power supply voltage :
1. Between CN21 and
No. 1 of CN23 (DC 15–60V)

IC03 and IC04 are defective.

Shorten the restart delay timer
and start unit.

Check whether or not all indicators
(OPERATION, TIMER, FILTER,
PURE) are lit for 3 seconds and they
return to normal 3 seconds later.

The indicators are defective or the
housing assembly (CN13) is defective.

Push [START/STOP] button once
to start the unit,
• Shorten the restart delay timer.
• Set the operation mode to
COOL.
• Set the fan speed level to
AUTO.
• Set the preset temperature
much lower than the room
temperature. (The unit (compressor) operates continuously
in the above condition.)

1. Check whether or not the compressor operates.
2. Check whether or not the OPERATION indicator flashes.

1. The temperature of the indoor heat
exchanger is extremely low.
2. The connection of the heat exchanger sensor is loose.
(The connector is disconnected.)
(CN01)
3. The heat exchanger sensor and the
P.C. board are defective.
(Refer to Table 11-4-1.)
4. The main P.C. board is defective.

If the above condition (No. 5) still
continues, start the unit in the
following condition.
• Set the operation mode to
HEAT.
• Set the preset temperature
much higher than room temperature.

1. Check whether or not the compressor operates.
2. Check whether or not the OPERATION indicator flashes.

1. The temperature of the indoor heat
exchanger is extremely high.
2. The connection of the heat exchanger sensor short-circuited.
(CN01)
3. The heat exchanger sensor and the
P.C. board are defective.
(Refer to Table 11-4-1.)
4. The main P.C. board is defective

Connect the motor connector to
1. Check it is impossible to detect
the motor and turn on the power
the voltage (DC 15V) between 3
supply.
and 4 of the motor terminals.
Start the unit the following
2. The motor does not operate or
condition.
the fan motor does not rotate with
• Set the fan speed level to HIGH.
high speed.
(The unit (compressor) operates
(But it is possible to receive the
continuously in the above
signal from the remote controller.)
condition in No. 5.)
3. The motor rotates but vibrates
strongly.

– 77 –

Causes

1. The indoor fan motor is defective.
(Protected operation of P.C. board.)
2. The P.C. board is defective.
3. The connection of the motor
connector is loose.

11-9-2. P.C. Board Layout
GND

+12V

+5V

[1] Sensor characteristic table

100

Resistance value (k )

90
80

70
60
50
40
30
20
TA, TC, TO, TE, TS

10
0
0

Temperature (˚C)

– 78 –

TD
TA
TC
TO
TE
TS

: Discharge temp. sensor
: Room temp. sensor
: Heat exchanger temp. sensor
: Outdoor temp. sensor
: Outdoor heat exchanger temp. sensor
: Suction temp. sensor

11-9-3. Indoor Unit (Other Parts)
No.

Part name

Room temp. (TA) sensor
Heat exchanger (TC) sensor

Checking procedure
Disconnect the connector and measure the resistance value with tester.
(Normal temp.)
Temperature
Sensor
TA, TC (kΩ)

10°C

20°C

25°C

30°C

40°C

20.7

12.6

10.0

7.9

4.5

Remote controller

Refer to 11-5-1. (5).

Louver motor
MP24Z

Measure the resistance value of each winding coil by using the tester.
(Under normal temp. 25°C)
White
Yellow
Yellow
Yellow
Yellow

Indoor fan motor

1
2
3
4
5

Position

Resistance value

1 to 2
1 to 3
1 to 4
1 to 5

380 ± 40Ω

Refer to 11-5-1. (3) and (4).

11-9-4. Outdoor Unit
No.
1

Part name
Compressor
(Model : DA111A1F-20F1)

Checking procedure
Measure the resistance value of each winding by using the tester.
Red

Position

Resistance value

Red - White
White - Black

0.88 to 0.98Ω

Black - Red
White

Outdoor fan motor
(Model : ICF-140-43-4R)

Black

Measure the resistance value of winding by using the tester.
Red

White

4-way valve coil
(Model : VHV)

Under 20°C

Black

Position

Resistance value

Red - White

17 to 25kΩ

White - Black

17 to 25kΩ

Black- Red

17 to 25kΩ

Measure the resistance value of winding by using the tester.
Resistance value
1435 ± 144Ω

Under 20°C
4

Pulse motor valve coil
(Model : CAM-MD12TF-6)

Measure the resistance value of winding by using the tester.
COM

1 W

Position

Resistance value

6 R

Red - White

42 to 50kΩ

3 O

White - Orange

42 to 50kΩ

Brown- Yellow

42 to 50kΩ

Brown- Blue

42 to 50kΩ

Y BR BL
COM 2

Under 20°C
5

Outdoor temperature sensor
(TO), discharge temperature
sensor (TD), suction
temperature sensor (TS),
outdoor heat exchanger
temperature sensor (TE)

Disconnect the connector, and measure resistance value with the tester.
(Normal temperature)
Temperature

10°C

20°C

25°C

30°C

40°C

50°C

TD (kW)

100

TO,TS,TE (kW)

20.7

12.6

10.0

7.9

4.5

—

Sensor

– 79 –

11-9-5. Checking Method for Each Part
Part name

Electrolytic capacitor
(For boost, smoothing)

Checking procedure
1.
2.
3.
4.
5.
6.

Turn OFF the power supply breaker.
Discharge all three capacitors completely.
Check that safety valve at the bottom of capacitor is not broken.
Check that vessel is not swollen or exploded.
Check that electrolytic liquid does not blow off.
Check that the normal charging characteristics are shown in continuity test by
the tester.
Heat sink IGBT side

No.

C12

C13

C14

Case that product is good

MCC-5009
Soldered
surface

Pointer swings once, and returns
slowly. When performing test
once again under another
polarity, the pointer should return.

C12, C13, C14 → 760µF/400V
2

Diode block

1. Turn OFF the power supply breaker.
2. Completely discharge the four electrolytic capacitors.
3. Remove the diode block from the PCB (which is soldered in place).
4. Use a multimeter with a pointer to test the continuity, and check that the
diode block has the proper rectification characteristics.

Tester rod

+~~–
1 2 3 4

–

(DBO1)

–

~2
~3

–4

~2
~3

Resistance value
in good product

∞

10 to 20 Ω when the multimeter probe
is reversed

– 80 –

11-10. How to Simply Judge Whether Outdoor Fan Motor is Good or Bad
1. Symptom
• Outdoor fan motor does not rotate.
• Outdoor fan motor stops within several tens seconds though it started rotating.
• Outdoor fan motor rotates or does not rotate according to the position where the fan stopped, etc.
Remote controller check code “02 : Outdoor block, 1A : Outdoor fan drive system error”
2. Cause
The following causes are considered when the outdoor fan motor does not normally rotate.
1) Mechanical lock of the outdoor fan motor
2) Winding failure of the outdoor fan motor
3) Position-detect circuit failure inside of the outdoor fan motor
4) Motor drive circuit failure of the outdoor P.C. board
3. How to simply judge whether outdoor fan motor is good or bad

Turn OFF the breaker.

Disconnect two connectors (CN300) of the
outdoor fan motor from the outdoor P.C. board.

Does the fan rotate without trouble
when rotating it with hands?

CN300

YES
If the resistance value between
1 (Red lead)
– 2 (White lead)
2 (White lead)
– 3 (Black lead)
3 (Black lead)
– 1 (Red lead)
of the connector
(CN300 : Motor winding)
is 17 to 25Ω, it is normal.

YES
Fan motor is normal.

Fan motor error

(Outdoor P.C. board error)

NOTE :
However, GND circuit error inside of the motor may be accepted in some cases when the above check is
performed.
When the fan motor does not become normal even if P.C. board is replaced, replace the outdoor fan motor.

– 81 –

12. HOW TO REPLACE THE MAIN PARTS
WARNING
• Since high voltages pass through the electrical parts, turn off the power without fail before proceeding with
the repairs.
Electric shocks may occur if the power plug is not disconnected.
• After the repairs have been completed (after the front panel and cabinet have been installed), perform a
test run, and check for smoking, unusual sounds and other abnormalities.
If this check is omitted, a fire and/or electric shocks may occur.
Before proceeding with the test run, install the front panel and cabinet.
• Ensure that the following steps are taken when doing repairs on the refrigerating cycle.
1. Do not allow any naked flames in the surrounding area.
If a gas stove or other appliance is being used, extinguish the flames before proceeding.
If the flames are not extinguished, they may ignite any oil mixed with the refrigerant gas.
2. Do not use welding equipment in an airtight room.
Carbon monoxide poisoning may result if the room is not properly ventilated.
3. Do not bring welding equipment near flammable objects.
Flames from the equipment may cause the flammable objects to catch fire.
• If keeping the power on is absolutely unavoidable while doing a job such as inspecting the circuitry, wear rubber gloves to avoid contact with the live parts.
Electric shocks may be received if the live parts are touched.
High-voltage circuits are contained inside this unit.
Proceed very carefully when conducting checks since directly touching the parts on the control circuit
board may result in electric shocks.

12-1. Indoor Unit
No.

Part name
Front panel

Procedures
1) Stop operation of the air conditioner and
turn off its main power supply.
2) Open the air inlet grille, push the arm
toward the outside, and remove the grille.

3) Remove the left and right air filters, and
remove the electric dust collector.

– 82 –

Remarks

No.

Part name
Front panel

Procedures

Remarks

4) Press “
” part under the front panel
and remove hooks of the front panel from
the installation plate.
Pull here
Installation plate

Press here

Front panel

Press

5) Remove the front panel fixing screws.
(2 pcs.)
6) Press the electric parts box with the right
thumb while pulling the both sides of the
front panel toward you.

Electric dust
collector
Holder

Electric dust
collector

Holder

Protrusion
Protrusion

1) Press three center positions and two lower center positions of the air outlet, and
then hang the hanging hooks (4 pcs.) at the top side of the front panel to the rear
plate.
2) Insert the electric dust collector and left and right air filters.
Press in the electric dust collector until the protrusions on both sides are completely
inserted into the holders.
If installation is incomplete, the FILTER indicator (orange) may light.
3) Tighten two screws.
• Incomplete hanging or incomplete pressing may cause a dewdrops or generation
of a fluttering sound.

– 83 –

No.

Part name

Procedures

High voltage
generator

1) Follow to the procedure in the item .
2) Remove the drain guide.
3) To remove the air ionizer from the back body,
pull it toward you while pressing down on its left
and right claws.
Disconnect the two leads (black) connected to
the air ionizer from where they are fitted into
the other components.
(Caution: do not remove the Faston.)
4) Disconnect the connectors of the high-voltage
generator, and disconnect the four leads from
where they are fitted into the other components.
5) Remove the fixing screw which secures the
high voltage generator, and remove the high
voltage generator from the evaporator.

Remarks

Connector

Drain guide

Air ionizer

Press the
claw here
Screw
Press the
claw here

Pull here

1) Insert the high voltage generator straight into
the evaporator, and secure it using the fixing
screw.

Check whether the
completely inserted.

2) Pass the leads of the high voltage generator
through the area designated and insert them
into its connectors.
3) Attach the air ionizer to the back body, and
pass the two leads (black) through the area
designated on the electric parts box assembly.
4) Attach the drain guide.

Claw

Claw
Claw

– 84 –

No.

Part name

Electric parts
box assembly

Procedures

Remarks

1) Follow the procedure up to 4) in above.
2) Remove screw of earth lead attached to the
end plate of the evaporator.
3) Remove the lead wire cover, and remove
connector (5P) for the fan motor and connector (5P) for the louver motor from the electric
parts box assembly.
4) Pull out TC sensor from sensor holder of the
evaporator.

TC sensor
Fan motor
connector
Louver moter
connector

Screw
Fixing screw

5) Disengage the two claws at the top of the
display unit.
(They can be easily disengaged by pressing
the drain pan above the claws and at the
same time pulling the display unit toward you.)
6) Remove the fixing screw that secures the
electric parts box assembly, and remove the
assembly.

1) Hook the top part of the electric parts box
assembly onto the claws on the back body,
and secure it using the fixing screw.
Now attach the display unit. Connect the
connectors for the fan motor and louver motor.
2) Secure the grounding wire using the fixing
screw. Insert the TC sensor into the sensor
holder.
* Be absolutely sure to loop the grounding
wire and TC sensor leads once at the
bottom.

– 85 –

Press the
drain pan

Pull the display
unit toward you

No.

Part name

Horizontal louver

Procedures

Remarks

1) Remove shaft of the horizontal
louver from the back body.
(First remove the left shaft, and
then remove other shafts while
sliding the horizontal louver
leftward.)
Slide the horizontal
louver leftward

Evaporator
(Heat exchanger)

1) Follow to the procedure in the item .
2) Remove the pipe holder from the rear side of the main unit.
3) Remove two fixing screws at the left side of the end plate of the heat exchanger.
Pipe holder

Disengage the claw

4) Remove the heat exchanger fixing holder
by removing the two fixing screws used to
secure it.

Screw

Heat exchanger
fixing holder

Screw

5) Remove right side of the end plate from
two fixing ribs while sliding slightly the
heat exchanger rightward.

– 86 –

No.

Part name
Bearing

Procedures
1) Follow to the procedure in the items .
2) Remove the two fixing screws used to secure
the left edge panel of the heat exchanger, and
remove the two screws used to secure the
bearing base.

Remarks

Screw
Bearing
base
Screw

3) Raise the left side of the heat exchanger
slightly, and remove the bearing base.

• If the bearing is out from the housing, push it
into the specified position and then incorporate
it in the main body.
• After assembling the bearing base, check that it
is fitted into the stepped part of the drain pipe.

Raise the left side

Remove in this direction

Bearing base

Bearing

Drain pipe

Bearing base

– 87 –

No.

Part name
Fan motor

Procedures
1) Follow to the procedure in the item .
2) Loosen the set screw of the cross flow fan.
3) Remove two fixing screws of the motor band
(Right), and then remove the motor band
(Right).
4) Pull the fan motor outward.
In assembling work, install the fan motor as
follows.
• When assembling the fan motor, the fan
motor must be installed in such a way that
the fan motor leads will be taken out is
positioned at the bottom front.
• After assembling the two hooking claws of
the motor band (right) into the main body,
position the fan motor, insert it, and then
secure the motor band (right) using the two
fixing screws.

Remarks

Set screw

Secure using
the fixing
g screw
Screw
Motor band
nd (Right)
Screw
Secure using
sing
the fixing screw
Fan motor leads

Cross flow fan

1) Follow to the procedure in the item .
2) Remove the heat exchanger fixing holder by
removing the two fixing screws used to
secure it.
3) Loosen the set screw of the cross flow fan.
4) Lift the left side of the heat exchanger, and
pull out the cross flow fan.

Raise the
left side

Pull out here

– 88 –

No.

Part name

Procedures

Cross flow fan

1) At assembling work of the bearing base,
check that the drain pipe is surely incorporated in the back body.
(Otherwise, water leak is caused.)
2) To incorporate the fan motor, remove the fan
motor rubber (at shaft core side), incorporate
the motor into the position in the following
figure, and then install the fan motor.

Remarks

Bearing base

Drain pipe

• Install the cross flow fan so that the right
end of the 1st joint from the right of the
cross flow fan is set keeping 70.5 mm from
wall of rear plate of the main unit.
• Holding the set screw, install the cross flow
fan so that U-groove of the fan motor comes
to the mounting hole of the set screw.

Joint

70.5mm

• Perform positioning of the fan motor as
follows:
• When assembling the fan motor, the fan
motor must be installed in such a way that
the fan motor leads will be taken out is
positioned at the bottom front.
• After assembling the two hooking claws of
the motor band (right) into the main body,
position the fan motor, insert it, and then
secure the motor band (right) using the two
fixing screws.

U groove

– 89 –

12-2. Microcomputer
No.

Part name

Common procedure

Procedure

Remarks

1) Turn the power supply off to stop the
operation of air-conditioner.
2) Remove the front panel.
• Remove the 2 fixing screws.
3) Remove the electrical part base.

Replace terminal block,
microcomputer ass’y and the
P.C. board ass’y.

R05

L01

C01 CN23 FUSE

R04

R01

CN10

DB01

C03

T01

IC01

C20 IC03

– 90 –

J04

12-3. Outdoor Unit
No.

Part name

Common
procedure

Procedure

Remarks

1. Detachment
Upper cabinet

NOTE
Wear gloves for this job.
Otherwise, you may injure your
hands on the parts, etc.
1) Stop operation of the air conditioner,
and turn off the main switch of the
breaker for air conditioner.
2) Remove the valve cover.
(ST1TØ4 × 8L 1 pc.)
• After removing screw, remove the
valve cover pulling it downward.
3) Remove wiring cover (ST1TØ4 × 8L
2 pcs.), and then remove connecting
cable.
4) Remove the upper cabinet.
(ST1TØ4 × 8L 5 pcs.)
• After removing screws, remove the
upper cabinet pulling it upward.

Water
proof
cover

Valve cover

2. Attachment
1) Attach the water-proof cover.
NOTE
The water-proof cover must be
attached without fail in order to
prevent rain water, etc. from entering
inside the indoor unit.
2) Attach the upper cabinet.
(ST1TØ4 × 8L 5 pcs.)
3) Perform cabling of connecting cable,
and attach the wiring cover.
• Place the wiring cover over the
opening used to work on the connecting wires of the side cabinet,
and secure it using the two fixing
screws (ST1TØ4 × 8L 2 pcs.).
At this point, the top cushion of the
wiring cover must be on the inside of
the opening.
4) Attach the valve cover.
(ST1TØ4 × 8L 1 pc.)
• Insert the upper part into the square
hole of the side cabinet, set hook
claws of the valve cover to square
holes (at three positions) of the main
unit, and attach it pushing upward.

– 91 –

Insert the bent part
into the rear panel
of the inverter

Align the stitch line
with the top edge
of the front cabinet

Bring into contact
against these parts

Bend downward, and align
with the inside surface
of the front cabinet

How to mount the water-proof cover

No.

Part name

Procedure

Front cabinet

1. Detachment
1) Perform step 1 in .
2) Remove the fixing screws (ST1TØ4 × 8L
2 pcs.) used to secure the front cabinet
and inverter cover, the screws (ST1TØ4
× 8L 3 pcs.) used to secure the front
cabinet at the bottom, and the fixing
screws (ST1TØ4 × 8L 2 pcs.) used to
secure the motor base.
• The front cabinet is fitted into the side
cabinet (left) at the front left side so
pull up the top of the front cabinet to
remove it.
2. Attachment
1) Insert the claw on the front left side into
the side cabinet (left).
2) Hook the bottom part of the front right
side onto the concave section of the
bottom plate. Insert the claw of the side
cabinet (right) into the square hole in the
front cabinet.
3) Return the screws that were removed
above to their original positions, and
attach them.the main unit, and attach it
pushing upward.

Remarks

Front cabinet

Claw
Square
hole

Concave section

– 92 –

No.

Part name
Inverter
assembly

Procedure
1) Perform work of item 1 in .
2) Remove screw (ST1TØ4 × 8L 2 pcs.) of the
upper part of the front cabinet.
• If removing the inverter cover in this
condition, P.C. board can be checked.
• If there is no space above the unit, perform
work of 1 in .

Remarks
Inverter cover
P. C. board
(Soldered surface)

Be careful to check the inverter because
high-voltage circuit is incorporated in it.
3) Perform discharging by connecting ,
polarity by discharging resistance (approx.
100Ω40W) or plug of soldering iron to ,
terminals a of the C14 (printed “CAUTION
HIGH VOLTAGE” is attached.) electrolytic
capacitor (760µF) on P.C. board.
Be careful to discharge the capacitor
because the electrolytic capacitor
cannot naturally discharge and voltage
remains according to trouble type in
some cases.

Discharging position
(Discharging period
10 seconds or more)

A screw
(STIT-4X8MSZN)

Plug of
soldering
iron

Terminal block

NOTE
This capacitor is one with mass capacity.
Therefore, it is dangerous that a large
spark generates if short-circuiting
between ,
polarity with screwdriver,
etc. for discharging.
4) Remove screw (ST1TØ4 × 8L 2 pcs.) fixing
the main body and the inverter box.
5) Remove the front cabinet by performing step
1 in , and remove the fixing screws
(ST1TØ4 × 8L) for securing the main body
and inverter box.
6) Remove various lead wires from the holder
at upper part of the inverter box.
7) Pull the inverter box upward.
8) Disconnect connectors of various lead wires.

Put the compressor Put each leads
leads through
through the hole
the hole

The connector is one
with lock, so remove
it while pushing the
part indicated by an
arrow.

Requirement
As each connector has a lock mechanism, avoid to remove the connector by
holding the lead wire, but by holding the
connector.

Be sure to remove the connector by
holding the connector, not by pulling
the lead wire.

– 93 –

No.

Part name

Procedure

Control board
assembly

1. Disconnect the leads and connectors connected to
the other parts from the control board assembly.
1) Leads
• 3 leads (black, white, orange) connected to
terminal block.
• Lead connected to compressor :
Disconnect the connector (3P).
• Lead connected to reactor :
Disconnect the two connectors (2P).
2) Connectors (×8)
CN300 : Outdoor fan motor (3P: white)*
(See NOTE)
CN701 : 4-way valve (2P: yellow)*
CN600 : TE sensor (2P: white)*
CN700 : PMW (6P: white)
CN603 : TS sensor (3P: white)*
CN601 :TD sensor (3P: white)*
CN602 : TO sensor (2P: white)

Remarks

CN603
CN601

CN600

CN701

CN700 CN602

CN300

CN300, CN701, CN600 and
CN603 are connectors with
locking mechanisms: as such,
to disconnect them, they must
be pressed in the direction of
the arrow while pulling them
out.

NOTE
These connectors have a disconnect prevention
mechanism: as such, the lock on their housing
must be released before they are disconnected.
2. Remove the control board assembly from the P.C.
board base. (Remove the heat sink and control
board assembly while keeping them screwed
together.)
NOTE
Disengage the four claws of the P.C. board base,
hold the heat sink, and lift to remove it.
3. Remove the two fixing screws used to secure the
heat sink and control board assembly.
4. Mount the new control board assembly.
NOTE
When mounting the new control board assembly,
ensure that the P.C. board is inserted properly
into the P.C. board support groove.

– 94 –

P.C. board base
P.C. board

No.

Part name

Side cabinet

Procedure

Remarks

1. Side cabinet (right)
1) Perform step 1 in and all the steps in
.
2) Remove the fixing screw (ST1TØ4 × 8L
5 pcs.) used for securing the side
cabinet to the bottom plate and valve
fixing panel.
2. Side cabinet (left)
1) Perform step 1 in .
2) Remove the fixing screw (ST1TØ4 × 8L
1 pcs.) used to secure the side cabinet
(left) onto the heat exchanger.
3) Remove the fixing screw (ST1TØ4 × 8L
2 pc.) used for securing the side cabinet
to the bottom plate and heat exchanger.

Hook the claw onto
the bottom plate here.

B
C
The back body section is hooked
onto the bottom plate here.

Detail A

Fan motor

Detail B

1) Perform work of item 1 of and .
2) Remove the flange nut fixing the fan motor
and the propeller.
• Flange nut is loosened by turning clockwise. (To tighten the flange nut, turn
counterclockwise.)
3) Remove the propeller fan.
4) Disconnect the connector for fan motor
from the inverter.
5) Remove the fixing screws (2 pc.) holding
by hands so that the fan motor does not
fall.
* Precautions when assembling the fan
motor
Tighten the flange nut using a tightening
torque of 4.9 N•m.

– 95 –

Detail C

Propeller fan
Fan motor

Flange nut

No.

Part name

Procedure

Compressor

1) Perform work of item 1 of and , , ,
.
2) Extract refrigerant gas.
3) Remove the partition board.
(ST1TØ4 × 8L 3 pcs.)
4) Remove the sound-insulation material.
5) Remove terminal cover of the compressor,
and disconnect lead wire of the compressor
from the terminal.
6) Remove pipe connected to the compressor
with a burner.
• Take care to keep the 4-way valve away
from naked flames. (Otherwise, it may
malfunction.)
7) Remove the fixing screw of the bottom plate
and heat exchanger. (ST1TØ4 × 8L 1 pc.)
8) Remove the fixing screw of the bottom plate
and valve fixing plate.
(ST1TØ4 × 8L 1 pc.)
9) Pull upward the refrigeration cycle.
10) Remove BOLT (3 pcs.) fixing the compressor to the bottom plate.
* Precautions when assembling the compressor.
Tighten the compressor bolts using a
tightening torque of 4.9 N•m.

Reactor

Remarks

Partition
board
Compressor

Valve
fixing
plate

1) Perform work of item 1 of , and .
2) Remove screws fixing the reactor.
(ST1TØ4 × 8L 4 pcs.)
Reactor

– 96 –

No.

Part name

Electronic
expansion valve
coil

Procedure

Remarks

1. Detachment
1) Perform step 1 in , all the steps in
and 1 in .
2) Remove the coil by pulling it up from the
electronic control valve body.

Coil
anti-turn
lock

2. Attachment
1) When assembling the coil into the valve
body, ensure that the coil anti-turn lock is
installed properly in the pipe.

When handling the parts, do not pull the leads.
When removing the coil from the valve body, use
your hand to secure the body in order to prevent
the pipe from being bent out of shape.

Fan guard

1. Detachment
1) Perform work of item 1 of .
2) Remove the front cabinet, and put it down
so that fan guard side directs downward.

Coil anti-turn
lock position

Coil inserting
position

Minus screwdriver
Hooking claw

Perform work on a corrugated cardboard,
cloth, etc. to prevent flaw to the product.
3) Remove the hooking claws by pushing minus
screwdriver according to the arrow mark in
the right figure, and remove the fan guard.
2. Attachment
1) Insert claws of the fan guard in the holes
of the front cabinet. Push the hooking
claws (9 positions) by hands and fix the
claws.
All the attaching works have completed.
Check that all the hooking claws are fixed
to the specified positions.

– 97 –

No.
11

Part name

Procedure

Remarks

TE sensor (outdoor heat exchanging temperature sensor)
• Attachment
With the leads pointing downward and the sensor leads
pointing in the direction shown in the figure, install the sensor
onto the straight pipe part of the condenser output pipe.

Detail C for 10GAVP-E

Detail C for 13, 16GAVP-E

TS sensor (Suction pipe temperature sensor)

TD sensor (Discharge pipe temperature sensor)
• Attachment
With its leads pointed downward, install the sensor onto the
vertical straight pipe part of the discharge pipe.

Detail B
Detail C

• Attachment
With its leads pointing downward, point the sensor in the
direction of the packed valve, and install it onto the straight
pipe part of the suction pipe.
13

Detail A
Arrow D

• Shown in the above figure is the
model 13GAVP-E.
• The sensor mounting positions
in the model 10GAVP-E are all
the same with the sole exception of the TE sensor. Refer to
the figure shown on the left.

TO sensor (Outside air temperature sensor)
• Attachment
Insert the outdoor air temperature sensor into the holder, and
install the holder onto the heat exchanger.

Detail B
TS sensor

Detail A
TD sensor

Arrow D
TO sensor

CAUTION
During the installation work (and on its completion), take care not to damage the coverings of
the sensor leads on the edges of the metal plates or other parts. It is dangerous for these
coverings to be damaged since damage may cause electric shocks and/or a fire.
CAUTION
After replacing the parts, check whether the positions where the sensors were installed are the
proper positions as instructed. The product will not be controlled properly and trouble will result
if the sensors have not been installed in their proper positions.

– 98 –

No.

Part name

Procedure

Replacement of
temperature sensor
for servicing only

1) Cut the sensor 100 mm longer than old
one.
2) Cut the protective tube after pulling out
it (200 mm).
3) Move the protective tube toward the
thermal sensor side and tear the tip of
lead wire in two then strip the covering
part.
4) Pass the stripped part through the
thermal constringent tube.
5) Cut the old sensor 100 mm length on
the connector side, and recycle that
connector.
6) Tear the lead wire in two on the connector side and strip the covering part.
7) Twist the leads on the connector and
sensor sides, and solder them.
8) Move the thermal constringent tubes
toward the soldered parts and heat
them with the dryer and constring
them.
9) Wind the attached color tape round the
both terminals of the protective tube
when colored protective tube is used.
10) Fix the sensor again.

Common service
parts of sensor TO,
TS, TE, TD

Remarks
Cutting here
Connector 100

Thermal
sensor part

Cutting here

200

Thermal
constringent tube

Cutting here
100

15
70

Soldered part

Dryer

Winding the color tape

NOTE
1) Store the joint part of the sensor and the connector in the electric parts
box.
2) Never joint them near the thermal sensor part. Otherwise it would cause
insulation inferiority because of dew drops.
3) When replacing the sensor using the colored protective tube, wind the
color tape matching the color of that tube.

These are parts for
servicing sensors.
Please check that
the accessories
shown in the right
table are packed.

Parts name

Q'ty

Remarks

Sensor

Length : 3m

Sensor Spring (A)

For spare

Sensor Spring (B)

For spare

Thermal constringent tube

Including one spare

Color tape

9 colors

Terminal

– 99 –

MCC-5009

– 100 –

13. EXPLODED VIEWS AND PARTS LIST
13-1. Indoor Unit (1)
240
238
247
216

235

213

234
217

214
225, 226

209
212

236

230
201

223

203
221, 222, 224
246

210
218, 219
207

215
211

227
205

228

206

202

239
229

245
204

232

233

∗ The parts in the following parts list are conformed to RoHS.
Therefore be sure to use the following parts for repairing and replacing.
Location
No.

Part
No.

Description

Location
No.

Part
No.

Description

201
202
203
204
205
206
207
209
210
211
212
213
214
215
216
217
218
219

43005633
43005610
4301V052
43080512
43080521
43009675
43009682
4302C067
4302C063
4306A024
43039363
43039321
43020346
43039314
43020253
4301V028
43049701
43049698

223

43049674

224
225

43047673
43044803

221

43047671

226
227
228
229
230
232
233
234
235
236
238
239
240
245
246
247

43044804
43039324
43049728
43019904
43049770
43062256
43062247
43082293
4306S577
43083071
43003307
43070188
43079268
43080516
43080527
4308N732

Spring, Suction
(B16GKVP-E)
Pipe, Inlet
Evaporator
(B10GKVP-E, B13GKVP-E)
Evaporator (B16GKVP-E)
Guide, Drain
Guide, Drain, Left
Holder, Sensor
Holder, Evaporator, Right
Cover, Terminal
Cover, Lead
Plate, Installation
Remote Controller
Holder, Remote, Comtroller
Body Ass’y, Back
Hose, Drain
Cap, Drain
Electrical Air Purifying Filter
Generator Ass’y, HV
Owner’s Manual

222

43047672

Panel Ass’y, Front
Grille, Air Inlet
Plate, Fix
Filter, Air, Right
Filter, Air, Left
Louver, Horizontal
Louver, Vertical
Motor, Fan
Motor, Louver
Cord, Motor, Louver
Band, Motor, Left
Base, Bearing
Fan, Cross Flow
Band, Motor
Bearing
Holder, Pipe
Pipe, Shield (B16GKVP-E)
Pipe, Shield
(B10GKVP-E, B13GKVP-E)
Pipe, Outlet
(B10GKVP-E, B13GKVP-E)
Pipe, Outlet (B16GKVP-E)

– 101 –

Indoor Unit (2)

402

407, 408, 409

403

404

406
401

410

405

∗ The parts in the following parts list are conformed to RoHS.
Therefore be sure to use the following parts for repairing and replacing.
Location
No.

Part
No.

Description

Location
No.

Part
No.

401
402
403
404
405
406

4306A123
43062263
43050425
43050426
4306S728
43051346

Terminal Block, 2P
Cover, E-Parts
Sensor, TC (F6)
Sensor, TA
P.C. Board Ass’y, WRS-LED
SW-Micro Ass’y

407

4306S709

408

4306S710

409

4306S711

410

43067115

– 102 –

Description
P.C. Board Ass’y
(B10GKVP-E)
P.C. Board Ass’y
(B13GKVP-E)
P.C. Board Ass’y
(B16GKVP-E)
Clamp, Cord

13-2. Outdoor Unit

4
44

28, 29
30, 31
47
6
27
14, 15, 17, 18, 20
21, 23, 24, 25, 26

11, 12

43
38
33
34 13, 16, 19, 22

35
37
2

32
40
39
41

35
7
34

42
5

45
46
10

– 103 –

∗ The parts in the following parts list are conformed to RoHS.
Therefore be sure to use the following parts for repairing and replacing.
Location
No.

Part

Description

Location
No.

Part

Description

1
2
3
4
5
6
7
8
9
10

43005657
43005642
43005658
43005634
4301V035
4301V053
43042489
43119471
43062262
43041634

43047681

43047674

43047675

44246239

43046444

29
30

43046443
37546848

43043749

43043751

13
14

37546845
43046442

37546846

16
17

43147196
43047401

18
19
20

43147195
43047676
43047677

21
22
23

43047678
43047679
43047680

Cabinet, Front
Cabinet, Upper
Cabinet, Side, Right
Cabinet, Side, Left
Guard, Fan
Guard, Fin
Base Ass’y
Cover, Valve, Packed
Cover, Wiring Ass’y
Compressor,
DA111A1F-20F1, RoHS
Condenser Ass’y
(10GAVP-E)
Condenser Ass’y
(13GAVP-E, 16GAVP-E)
Valve, Packed, 6.35
Valve, Packed, 9.52
(10GAVP-E, 13GAVP-E)
Valve, Packed, 12.7
(16GAVP-E)
Bonnet, 1/4 IN
Bonnet, 3/8 IN
(10GAVP-E, 13GAVP-E)
Bonnet, 1/2 IN (16GAVP-E)
Nut, Flare, 6.35
Nut, Flare, 9.52
(10GAVP-E, 13GAVP-E)
Nut, Flare, 12.7 (16GAVP-E)
Cap, Valve, Packed, 6.35
Cap, Valve, Packed, 9.52
(10GAVP-E, 13GAVP-E)

31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48

37546849
43058277
4302C068
43020329
43047669
43039392
43004233
4301V064
43032441
43089160
4301P703
4301P702
43049749
43062176
43063321
43063322
43063325
43063339

Cap, Valve, Packed, 12.7
(16GAVP-E)
Cap, Charge, Port
(10GAVP-E, 13GAVP-E)
Cap, Charge, Port
(16GAVP-E)
Tube, Capillary, I.D 1.2
(13GAVP-E, 16GAVP-E)
Valve, 4-Way,
STF-0108Z, RoHS
Coil, 4-Way valve
Valve, Pulse, Motor,
CAM-B22YGTF-3
Coil, PMV, CAM-MD12TF-6
Reactor
Motor, Fan, ICF-140-43-4R
Fan, Propeller, PJ421
Nut, Flange
Base, Motor Ass’y
Plate, Partition
Plate, Fix, Valve, Packed
Nipple, Drain
Cap, Waterproof
Mark, TOSHIBA
Mark, DAISEIKAI
Rubber, Cushion
Sleeve, Flag
Holder, Sensor (TD)
Holder, Sensor (TS)
Holder, Sensor (TE)
Holder, Sensor (TO)

– 104 –

13-3. P.C. Board Layout

704 Base, P.C. Board

706
701
702
703

Sensor, TD (Ø4)
Sensor, TE
Sensor, TS
Sensor, TO

707 P.C. Board Ass’y

705 Terminal (6P)

∗ The parts in the following parts list are conformed to RoHS.
Therefore be sure to use the following parts for repairing and replacing.
Location
No.

Part

701
702
703
704

43050422
43050423
43050427
43062228

Description

Location
No.

Part

705
706
707

43160566
43050430
4306S737

Sensor, TE
Sensor, TS
Sensor, TO
Base, P.C. board

– 105 –

Description
Terminal Block, 6P
Sensor, TD
P.C. board Ass’y, MCC5009

Appendix

Cord Heater Installation Work
Applicable Models: RAS-10GAVP-E, RAS-13GAVP-E, RAS-16GAVP-E

1. Required parts for installation work (Recommendation)
The above products conform to RoHS (2002/95/EC). Therefore when procuring and using the following recommended parts at local site, it is recommended to confirm each part conforms to RoHS before use.
No.

Part name

Q’ty

Specifications/Vendor

Cord heater

Drain line heaters CSC2 (1.5m, 40W/m) by Flexelec com.
(Please go to the following URL.)
http://www.flexelec.com

Procured locally

Thermostat

US-622AXRLQE by ASAHI KEIKI
Operating temperature: on 4 ± 4°C, off 15 ± 3°C
A thermostat holder is incorporated with a thermostat in the package.
(Please go to the following URL.)
http://www.asahikeiki.co.jp/product/product.html
On self-responsibility, you can use a product manufactured by other
company (For example, Texas Instruments) if its characteristics are
equivalent to those of ASAHI KEIKI. However, when the shape of the
thermostat holder is different from that of ASAHI KEIKI, apply some
treatment to No.14 thermostat fixing plate and then fix the holder.

Procured locally

Fuse

ES3-5000, 250V / 5A by NAGASAWA Electric Co.
(Please go to the following URL.)
http://www.nagasawa-el.co.jp/
On self-responsibility, you can use a product manufactured by other
company if its characteristics are equivalent to those of NAGASAWA
Electric Co.

Procured locally

Fuse holder

GM1H-02 by NAGASAWA Electric Co.
(Please go to the following URL.)
http://www.nagasawa-el.co.jp/
On self-responsibility, you can use a product manufactured by other
company if its characteristics are equivalent to those of NAGASAWA
Electric Co.

P-shape
clamp

Use heat-resistance, weatherproof and non-hydrolytic type.
Material: 4-fluorinated ethylene copolymer
Harness diameter: Ø5.9
Use equivalence with the above specifications.
11 pieces are used to fix the cord heater to the outdoor unit base plate.
One piece is used to fix the power cord to the thermostat fixing plate .
One piece is used to fix the power cord to the terminal fixing plate.

Procured locally

P-shape
clamp

Use heat-resistance, weatherproof and non-hydrolytic type.
Material: 4-fluorinated ethylene copolymer
Harness diameter: Ø9.1
Use equivalence with the above specifications.
One piece is used to fix the cord heater to the outdoor unit base plate.

Procured locally

Screw

Self-tapping screw type-B Ø4 × 6mm, truss head, stainless
These screws are used to fix the cord heater to the outdoor unit base
plate with P-shape clamp.

Procured locally

Screw

Self-tapping screw type-B Ø4 × 8mm, truss head, stainless
Two screws are used to fix the thermostat fixing plate to the side cabinet (R).
One screw is used to fix the power cord to the thermostat fixing plate.
One screw is used to fix the power cord to the terminal fixing plate.

Procured locally

Screw

Self-tapping screw type-B Ø3.5 × 6mm, pan head
These screws are used to fix the thermostat to the thermostat fixing
plate with the thermostat holder.

Procured locally

Faston

#250

Procured locally

Sleeve for
Faston

UL sleeve for #250

Procured locally

Close-end
connector

Use the most appropriate connector with the power cord diameter.

Procured locally

They are used for the connecting part to the thermostat.

Appendix-1

Remarks

Procured locally

Appendix
No.

Part name

Q’ty

Specifications/Vendor

Remarks

Power cord

2-cores x 0.75mm² or more, H05RN-F

Procured locally

Thermostat
fixing plate

Material: SGCC-Z08, Board thickness: 0.8t

Procured locally
(Drawing attached)

PVC tube

Inside diameter Ø8 x outside diameter Ø11 x 70 mm

Procured locally

Shield tube

Inside diameter Ø18 x outside diameter Ø26 x 70 mm
Material: Polyethylene foam

Procured locally

Bundling tie

Bundling tie for securing the wires
Material: 6/6 nylon

Procured locally

NOTE: The parts on the above table are recommended parts.

2. Required tools for installation work
No.

Part name

Usage

Specifications

Plus screwdriver

It is used for disassembling and assembling of each cabinet.

Wrench

It is used for disassembling and assembling of compressor fixing nuts.

Motor drill

Drill diameter:
Ø3.2 and Ø5.0

Faston crimping tool

Fixing jig for #250

Close-end connector crimping tool

Cutting plier

Stripper

Cutter knife

Insulation tape

Metal-cutting shears

It is used to make the additional holes on the base or the side cabinet
(R).

It is used to process the side cabinet (L).

Appendix-2

Appendix
3. Cord heater installation wiring diagram

Fuse

Thermostat

Cord heater

* Be sure to connect the fuse and the thermostat to LIVE side of the cord heater.

Outdoor unit
Earth leakage circuit breaker

Power supply for air conditioner

Earth leakage circuit breaker

Power supply for cord heater

NOTE:
Separate the cord heater power from the air conditioner power, and connect it to its exclusive breaker.
By doing so, the power consumption can be decreased because the breaker can be turned off if there is no
possibility of freezing of the base plate in cooling operation, etc.
When the cord heater power is connected to the inverter P.C. board assembly or others without connected to the
exclusive breaker, the control P.C. board of the inverter assembly may cause a failure.
When the cord heater has been mounted on a base plate, do not mount the water-proof cap and drain nipple which
are provided with the outdoor unit on the base plate.

Appendix-3

Appendix
4. Cord heater installation work procedure
No.
1

Photo / Explanatory diagram

Procedure

Remove each cabinet, inverter assembly, motor base assembly, and partition board assembly.
* Do not damage the electric parts such as cables, connectors, etc. while this work.
Remove the upper cabinet and the valve cover.
Upper cabinet

Related parts / Screws list
Part name

1-1

Used screw
Screw type

Quantity

Upper cabinet

Ø4 × 8

Valve cover

Ø4 × 1

Valve cover

Water-proof
cover

Remove the front cabinet, the wiring cover and the
water-proof cover.
Related parts / Screws list

Wiring cover

Part name

1-2

Used screw
Screw type

Quantity

Front cabinet

Ø4 × 8

Wiring cover

Ø4 × 8

Front cabinet

Side cabinet (L)

Inverter assembly

Side cabinet (R)

Remove the side cabinet (R/L) and the inverter
assembly.
Related parts / Screws list
Part name

1-3

Used screw
Screw type

Quantity

Side cabinet (R)

Ø4 × 8

Side cabinet (L)

Ø4 × 8

Inverter assembly

Ø4 × 8

Remove the inverter assembly.

1-4

No. Part name

Connector No.

1 TE sensor

CN600

White

2 TD sensor

CN601

White

3 TO sensor

CN602

White

4 TS sensor

CN603

White

CN701

Yellow

6 PMV coil

CN700

White

CN300

White

4-way valve
coil
Fan motor

Compressor (Intermediate connector)
8
lead
9

Appendix-4

Reactor
(2 pieces.)

(Intermediate connector)

Connector color

White
White

Appendix
No.

Photo / Explanatory diagram

Procedure

Motor base
assembly

Remove the motor base assembly, partition plate assembly
and the sound insulation board.
Related parts / Screws list

Partition plate
assembly

Part name

Screw type

Quantity

Motor base assembly
(Including motor and fan)

Ø4 × 8

Partition plate assembly
(Including reactor)

Ø4 × 8

1-5

Sound
insulation board

Used screw

Remove the fixing screws of the heat exchanger and the
valve fixing plate. Remove the compressor fixing bolt.
Valve fixing plate

Heat exchanger

Related parts / Screws list
Part name

1-6

Used screw
Screw type

Quantity

Heat exchanger

Ø4 × 8

Valve fixing plate

Ø4 × 8

Compressor

bolt

Compressor

As shown in the left figure, remove the set of refrigeration cycle
assembly from the outdoor unit base plate.
* In this time, work attentively so that the cycle pipes are not
damaged by dent or deformation. Apply protective
measures to pipes if necessary.

1-7

Appendix-5

Appendix
No.

Photo / Explanatory diagram

Procedure

Cord heater installation work
2

Drill a hole on the outdoor unit base plate, and fix the cord heater to the outdoor unit base plate using P-shape
clamp.
Connect the cord heater cables.

2-1

Using a motor drill, etc., drill Ø3.2 holes on the outdoor unit base plate. (12 positions) See Appendix-10 for the
additional hole positions.
These holes are used to fix the cord heater to the outdoor unit base plate with P-shape clamp.
Insert the PVC tube into the cord heater.
This tube is designed to protect the cord heater from
the fixing screws used to secure the anchoring feet.
As shown in the left figure, install the cord heater
(1.5m) to the outdoor unit base plate by using Pshape clamp and screws (Self-tapping screw type-B
Ø4 × 6mm, stainless).

2-2
PVC tube
Ø9.1 P-shape clamp

The PVC tube must be inserted
into the cord heater between
the fixing screws in order to
protect the cord heater from
these screws.
Under no circumstances must
the tube be allowed to ride over
the tip of the fixing screws.

Pay attention to the direction of P-shape clamp so
that it is set to the same direction in the left figure.
* If the drain port is frozen due to installation
status, etc., draw around the cord heater so that
the end part of the heater is inserted into the
drain port. In this case, add some fixing
positions to fix the cord heater surely.
* The end part from the marked part of the cord
heater heats up. When there is the heating part
near the electric parts box, a fire may generate.
Be sure to set the heating part on the outdoor
unit base plate at the fan room side or near it.
(within 20cm from the outdoor unit base plate)

Enlarged
marked part

Heating part

* Be careful that the cord heater does not hit the
fan.
Fix the cord heater without any loosening or sag.
Drill a hole on the side cabinet (R) for fixing the
thermostat fixing plate.

Added hole 2-φ5

Ø5 hole at two positions

When drilling a hole on the side cabinet (R), be
sure not to damage the cabinet.

46
7

2-3

Side cabinet (R)

Appendix-6

Appendix
No.

Photo / Explanatory diagram

Procedure
Rework the side cabinet (L) to remove part of it.

Side cabinet (L)

The area to be removed is indicated by the shaded
lines in the left figure.
After removing part of the side cabinet (L), deburr the
edges of the side cabinet (L).

2-4

Delete

Perform end process and bundling of each cable.

Close-end connector
insulation tape

Using fixing screws (Self-tapping screw type-B Ø3.5
× 6mm), fix the thermostat to the thermostat fixing
plate.

Thermostat
Power cord

Perform end process for various lead cables and
connect them according to the wiring diagram.
Attach #250 Faston and UL-approved sleeves each
to the end of lead cables which are connected to the
thermostat.

2-5
Thermostat
fixing plate

Cord heater
* Transparent
L side

P-shape clamp

Fuse
Fuse holder

Using insulation tape, apply protective measures to
the connected parts by the close-end connectors.
Using P-shape clamp and the screws (Self-tapping
screw type-B Ø4 × 8mm), fix the power cord to the
thermostat fixing plate.
When the power cord size does not match with Pshape clamp, procure the most appropriate one at
the local site.

Appendix-7

Appendix
No.

Photo / Explanatory diagram

Procedure

Assembly
3

Return a set of the refrigeration cycle assembly into the outdoor unit base plate and reassemble sound insulation
board, partition plate assembly, fan motor assembly, and side cabinet (R/L) as original. Fix the thermostat fixing
plate to the side cabinet (R), built in the inverter assembly, and then connect various cables. After then,
incorporate front cabinet, upper cabinet, wiring cover, and valve cover as before.
Return a set of the refrigeration cycle assembly into the
outdoor unit base plate, and assemble sound insulation
board, partition plate assembly, fan motor assembly, and
side cabinet (R/L) as original.

3-1

Thermostat fixing plate

Using screws (Self-tapping screw type-B Ø4 × 8mm,
stainless), fix the thermostat fixing plate to the side
cabinet (R).

Side cabinet (R)

3-2

Do not make cord heater loose.
Do not put the heating part near the electric parts box.

For the cord heater, perform cable process so that there
is no looseness or sag at the fan side.

Perform cable process for collected
cord heater and fan motor lead cables.

3-3

Perform cable process for the cord heater together with
the fan motor lead cable, and collect the remained part
of cables at cable process part of the inverter.
Secure the power cord for the cord heater to the
terminal block mounting plate using the P-shape clamp,
and pull it out from the wiring area of the side cabinet
(R).

P-shape
clamp

* Check that there is the marked part of the cord heater
on the outdoor unit base plate or near it.
When there is the heating part near the electric parts
box, a fire may generate.

Power cord for
cord heater

To keep the lead wires from coming into contact with the
edges of the sheet metal or tips of the screws, wrap the
shield tubes around the leads to protect them and use
the bundling ties to secure them.

3-4
4

After incorporating the inverter assembly as before,
furthermore perform cable process for cord heater and
power cord.

Since the lead wires connected to the cord heater and
thermostat may come into contact with the edges of the
sheet metal or tips of the screws, wrap the shield tubes
around the leads to protect them and use the bundling
ties to secure them.

Incorporate front cabinet, upper cabinet, wiring cover, water-proof cover and valve cover as before.
In installation work, connect power cord for the cord heater to another breaker separated from one for power cord
of the air conditioner.

Appendix-8

Appendix

5.8

5. Drawing of thermostat fixing plate

37
2-Ø3.4 burring hole
(Upward)

18
11

11
18

3-Ø3.4 burring hole
(Downward)

Material: SGCC-Z08, Thickness: 0.8t

Appendix-9

Appendix
6. Diagram showing positions φ3.2 mm holes to be additionally drilled in base plate

Appendix-10

This product is compliant with Directive 2002/95/EC, and cannot be disposed as unsorted municipal waste.

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Toshiba Ras 10Gavp E Service Manual

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