Gree GWH18RC-K3DNA2C User manual

GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI
Change for Life
Service Manual
GWH18RC-K3DNA2C
GWH18RC-K3DNA3C
GWH18RC-K3DNA5C
GWH18RC-K3DNA6C
GWH18RC-K3DNA8C
GWH18RC-K3DNA9C(white panel)
GWH18RC-K3DNA9C(silver grey panel)
GWH24RD-K3DNA2C
GWH24RD-K3DNA3C
GWH24RD-K3DNA5C
GWH24RD-K3DNA6C
GWH24RD-K3DNA8C
(Refrigerant R410A)

Service Manual
Table of Contents
Table of Contents
Part ĉ: Technical Information......................................................................... 1
1. Summary........................................................................................................................ 1
6SHFL¿FDWLRQV............................................................................................................ 3
6SHFL¿FDWLRQ6KHHW............................................................................................................. 3
2.2 Operation Characteristic Curve .......................................................................................... 9
2.3 Capacity Variation Ratio According to Temperature ........................................................... 9
2.4 Cooling and Heating Data Sheet in Rated Frequency ..................................................... 10
2.5 Noise Curve...................................................................................................................... 10
3. Outline Dimension Diagram.........................................................................11
3.1 Indoor Unit.........................................................................................................................11
3.2 Outdoor Unit ..................................................................................................................... 12
4. Refrigerant System Diagram...................................................................... 14
5. Electrical Part........................................................................................................... 15
5.1 Wiring Diagram................................................................................................................. 15
5.2 PCB Printed Diagram ....................................................................................................... 19
6. Function and Control........................................................................................ 22
6.1 Remote Controller Introduction ....................................................................................... 22
6.2 Brief Description of Modes and Functions........................................................................ 26
Part Ċ: Installation and Maintenance ................................................... 31
7. Notes for Installation and Maintenance............................................ 31
8. Installation.................................................................................................................. 33
8.1 Installation Dimension Diagram........................................................................................ 33
8.2 Installation Parts-checking .............................................................................................. 35
8.3 Selection of Installation Location...................................................................................... 35
8.4 Electric Connection Requirement..................................................................................... 35
8.5 Installation of Indoor Unit.................................................................................................. 35
8.6 Installation of Outdoor Unit............................................................................................... 38
8.7 Vacuum Pumping and Leak Detection ............................................................................. 39
8.8 Check after Installation and Test Operation ..................................................................... 39

Service Manual
Table of Contents
9. Maintenance.................................................................................................................40
9.1 Precautions before Maintenance......................................................................................... 40
9.2 Error Code List ....................................................................................................................41
9.3 Troubleshooting for Main Malfunction ................................................................................. 46
9.4 Troubleshooting for Normal Malfunction..............................................................................59
10. Exploded View and Parts List ...................................................................61
10.1 Indoor Unit.........................................................................................................................61
10.2 Outdoor Unit ......................................................................................................................71
11. Removal Procedure............................................................................................79
11.1 Removal Procedure of Indoor Unit ....................................................................................79
11.2 Removal Procedure of Outdoor Unit(18K).........................................................................86
11.3 Removal Procedure of Outdoor Unit(24K).........................................................................93
Appendix:...........................................................................................................................100
Appendix 1: Reference Sheet of Celsius and Fahrenheit ....................................................... 100
$SSHQGL[&RQ¿JXUDWLRQRI&RQQHFWLRQ3LSH........................................................................ 100
Appendix 3: Pipe Expanding Method ......................................................................................101
Appendix 4: List of Resistance for Ambient Temperature Sensor ...........................................102

1
Technical Information
Service Manual
1. Summary
Part ĉ: Technical Information
Indoor Unit:
GWH18RC-K3DNA2C/I
GWH24RD-K3DNA2C/I
GWH18RC-K3DNA3C/I
GWH24RD-K3DNA3C/I
GWH18RC-K3DNA8C/I
GWH24RD-K3DNA8C/I
GWH18RC-K3DNA6C/I
GWH24RD-K3DNA6C/I
GWH18RC-K3DNA5C/I
GWH24RD-K3DNA5C/I

2Technical Information
Service Manual
GWH18RC-K3DNA3C/O
Outdoor Unit:
Remote Controller:
YAA1FB
GWH18RC-K3DNA8C/O GWH24RD-K3DNA8C/O
GWH24RD-K3DNA3C/O
GWH18RC-K3DNA9C/I(white panel)
GWH18RC-K3DNA9C/I(silver grey panel)

3
Technical Information
Service Manual
6SHFL¿FDWLRQV
6SHFL¿FDWLRQ6KHHW
Model
1.GWH18RC-K3DNA3C
2.GWH18RC-K3DNA2C
3.GWH18RC-K3DNA6C
1.GWH24RD-K3DNA3C
2.GWH24RD-K3DNA2C
3.GWH24RD-K3DNA6C
Product Code
1.CB302001100
2.CB301001300
3.CB305000300
1.CB302001400
2.CB301001400
3.CB305000400
Power
Supply
Rated Voltage V 220-240 220-240
Rated Frequency Hz 50 50
Phases 1 1
Power Supply Mode Indoor Indoor
Cooling Capacity W 5275 6450
Heating Capacity W 5275 6450
Cooling Power Input W 1620 1940
Heating Power Input W 1600 1910
Cooling Power Current A 7.19 8.5
Heating Power Current A 7.10 8.5
Rated Input W 2500 3050
Rated Current A 10.87 13.85
Air Flow Volume (SH/H/M/L/SL) m3/h 850/780/740/300/- 1000/800/700/600/-
Dehumidifying Volume L/h 1.8 2.5
EER W/W 3.26 3.32
COP W/W 3.30 3.38
SEER W/W / /
HSPF W/W / /
Application Area m223-34 27-42
Indoor Unit
Model of indoor unit
1.GWH18RC-K3DNA3C/I
2.GWH18RC-K3DNA2C/I
3.GWH18RC-K3DNA6C/I
1.GWH24RD-K3DNA3C/I
2.GWH24RD-K3DNA2C/I
3.GWH24RD-K3DNA6C/I
Fan Type &URVVÀRZ &URVVÀRZ
Diameter Length (DXL) mm ĭ; ĭ;
Fan Motor Cooling Speed (SH/H/M/L/SL) r/min 1350/1200/1000/800/- 1350/1150/950/850/-
Fan Motor Heating Speed (SH/H/M/L/SL) r/min 1420/1250/1100/950/- 1400/1200/1000/900/-
Output of Fan Motor W 20 35
Fan Motor RLA A 0.31 0.31
Fan Motor Capacitor ȝ) 1.5 2.5
Input of Heater W / /
Evaporator Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter mm ĭ ĭ
5RZ¿Q*DS mm 2-1.4 2-1.5
Coil Length (LXDXW) mm 715X25.4X304.8 765X25.4X342.9
Swing Motor Model MP28VB MP35XX
Output of Swing Motor W 2.0 2.5
Fuse A 3.15 3.15
Sound Pressure Level (SH/H/M/L/SL) dB (A) 48/46/37/33/- 50/45/39/36/-
Sound Power Level (SH/H/M/L/SL) dB (A) 58/56/47/43/- 60/55/49/46/-
Dimension (WXHXD) mm 945X298X208 1018X315X223
Dimension of Carton Box (LXWXH) mm 1010X380X285 1083X395X313
Dimension of Package (LXWXH) mm 1013X383X300 1086X398X328
Net Weight kg 13 15.5
Gross Weight kg 16 19

4Technical Information
Service Manual
Outdoor Unit
Model of Outdoor Unit GWH18RC-K3DNA3C/O GWH24RD-K3DNA3C/O
Outdoor Unit Product Code CB302W01100 CB302W01400
Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR
CO., LTD
ZHUHAI LANDA COMPRESSOR
CO,LTD
Compressor Model QXA-B141zF030A QXAS-D23zX090B
Compressor Oil 68EP RB68EP
Compressor Type Rotary Rotary
L.R.A. A 25.00 25.00
Compressor RLA A 7.20 11.50
Compressor Power Input W 1440 2550
Overload Protector 1NT11L-6233or HPC 115/95 or
KSD115ć
1NT11L-6233or HPC 115/95 or
KSD115ć
Throttling Method Electron expansion valve Electron expansion valve
Operation temp ć16 30 16 30
Ambient temp (cooling) ć18 43 18 43
Ambient temp (heating) ć-7 24 -7 24
Condenser Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter mm ĭ ĭ
5RZV¿Q*DS mm 2-1.4 2-1.4
Coil Length (LXDXW) mm 821.5X38.1X660 955X38X748
Fan Motor Speed rpm 800/300 780
Output of Fan Motor W 60 90
Fan Motor RLA A 0.58 0.48
Fan Motor Capacitor ȝ) //
Air Flow Volume of Outdoor Unit m3/h 3200 4000
Fan Type $[LDOÀRZ $[LDOÀRZ
Fan Diameter mm ĭ ĭ
Defrosting Method Automatic Defrosting Automatic Defrosting
Climate Type T1 T1
Isolation I I
Moisture Protection IP24 IP24
Permissible Excessive Operating
Pressure for the Discharge Side MPa 4.3 4.3
Permissible Excessive Operating
Pressure for the Suction Side MPa 2.5 2.5
Sound Pressure Level (H/M/L) dB (A) 56/-/- 58/-/-
Sound Power Level (H/M/L) dB (A) 66/-/- 70/-/-
Dimension (WXHXD) mm 965X700X396 1000X790X427
Dimension of Carton Box (LXWXH) mm 1026X455X735 1080X485X840
Dimension of Package (LXWXH) mm 1029X458X750 1083X488X855
Net Weight kg 46 62.5
Gross Weight kg 51 67
Refrigerant R410A R410A
Refrigerant Charge kg 1.30 2.00
Connection
Pipe
Length m 5 5
Gas Additional Charge g/m 20 50
Outer Diameter Liquid Pipe mm ĭ ĭ
Outer Diameter Gas Pipe mm ĭ ĭ
Max Distance Height m 10 10
Max Distance Length m 25 25
Note:The connection pipe applies metric diameter.
The above data is subject to change without notice; please refer to the nameplate of the unit.

5
Technical Information
Service Manual
Model GWH18RC-K3DNA8C
GWH18RC-K3DNA5C
GWH24RD-K3DNA8C
GWH24RD-K3DNA5C
Product Code CB313000400
CB304002200
CB313000300
CB304002300
Power
Supply
Rated Voltage V 220-240 220-240
Rated Frequency Hz 50 50
Phases 1 1
Power Supply Mode Outdoor Outdoor
Cooling Capacity W 5275 6450
Heating Capacity W 5600 6450
Cooling Power Input W 1620 1940
Heating Power Input W 1650 1910
Cooling Power Current A 7.19 8.5
Heating Power Current A 7.10 8.5
Rated Input W 2500 4000
Rated Current A 10.87 17.50
Air Flow Volume (SH/H/M/L/SL) m3/h 850/780/740/300/- 1000/800/700/600/-
Dehumidifying Volume L/h 1.8 2.5
EER W/W 3.26 3.32
COP W/W 3.39 3.38
SEER W/W / /
HSPF W/W / /
Application Area m223-34 27-42
Indoor Unit
Model of indoor unit GWH18RC-K3DNA8C/I
GWH18RC-K3DNA5C/I
GWH24RD-K3DNA8C/I
GWH24RD-K3DNA5C/I
Fan Type &URVVÀRZ &URVVÀRZ
Diameter Length (DXL) mm ĭ; ĭ;
Fan Motor Cooling Speed (SH/H/M/L/SL) r/min 1350/1200/1000/800/- 1350/1150/950/850/-
Fan Motor Heating Speed (SH/H/M/L/SL) r/min 1420/1250/1100/950/- 1400/1200/1000/900/-
Output of Fan Motor W 20 35
Fan Motor RLA A 0.31 0.31
Fan Motor Capacitor ȝ) 1.5 2.5
Input of Heater W / /
Evaporator Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter mm ĭ ĭ
5RZ¿Q*DS mm 2-1.4 2-1.5
Coil Length (LXDXW) mm 715X25.4X304.8 765X25.4X342.9
Swing Motor Model MP28VB MP35XX
Output of Swing Motor W 2.0 2.5
Fuse A 3.15 3.15
Sound Pressure Level (SH/H/M/L/SL) dB (A) 48/46/37/33/- 50/45/39/36/-
Sound Power Level (SH/H/M/L/SL) dB (A) 58/56/47/43/- 60/55/49/46/-
Dimension (WXHXD) mm 945X298X208 1018X315X223
Dimension of Carton Box (LXWXH) mm 1010X380X285 1083X395X313
Dimension of Package (LXWXH) mm 1013X383X300 1086X398X328
Net Weight kg 12 15
Gross Weight kg 15 18.5

6Technical Information
Service Manual
Outdoor Unit
Model of Outdoor Unit GWH18RC-K3DNA8C/O GWH24RD-K3DNA8C/O
Outdoor Unit Product Code CB313W00400 CB313000300
Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR
CO., LTD
ZHUHAI LANDA COMPRESSOR
CO,LTD
Compressor Model QXA-B141zF030A QXAS-D23zX090B
Compressor Oil 68EP RB68EP
Compressor Type Rotary Rotary
L.R.A. A 25.00 25.00
Compressor RLA A 7.20 11.50
Compressor Power Input W 1440 2550
Overload Protector 1NT11L-6233or HPC 115/95 or
KSD115ć
1NT11L-6233or HPC 115/95 or
KSD115ć
Throttling Method Electron expansion valve Electron expansion valve
Operation temp ć16 30 16 30
Ambient temp (cooling) ć18 43 18 43
Ambient temp (heating) ć-7 24 -7 24
Condenser Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter mm ĭ ĭ
5RZV¿Q*DS mm 2-1.4 2-1.4
Coil Length (LXDXW) mm 821.5X38.1X660 955X38X748
Fan Motor Speed rpm 800/300 780
Output of Fan Motor W / /
Fan Motor RLA A / /
Fan Motor Capacitor ȝ) //
Air Flow Volume of Outdoor Unit m3/h 3200 4000
Fan Type $[LDOÀRZ $[LDOÀRZ
Fan Diameter mm ĭ ĭ
Defrosting Method Automatic Defrosting Automatic Defrosting
Climate Type T1 T1
Isolation I I
Moisture Protection IP24 IP24
Permissible Excessive Operating
Pressure for the Discharge Side MPa 4.3 4.3
Permissible Excessive Operating
Pressure for the Suction Side MPa 2.5 2.5
Sound Pressure Level (H/M/L) dB (A) 56/-/- 58/-/-
Sound Power Level (H/M/L) dB (A) 66/-/- 70/-/-
Dimension (WXHXD) mm 965X700X396 1000X790/X427
Dimension of Carton Box (LXWXH) mm 1026X455X735 1080X485X840
Dimension of Package (LXWXH) mm 1029X458X750 1083X488X855
Net Weight kg 48 62.5
Gross Weight kg 52.5 67
Refrigerant R410A R410A
Refrigerant Charge kg 1.30 2.00
Connection
Pipe
Length m 5 5
Gas Additional Charge g/m 20 50
Outer Diameter Liquid Pipe mm ĭ ĭ
Outer Diameter Gas Pipe mm ĭ ĭ
Max Distance Height m 10 10
Max Distance Length m 25 25
Note:The connection pipe applies metric diameter.
The above data is subject to change without notice; please refer to the nameplate of the unit.

7
Technical Information
Service Manual
Model GWH18RC-K3DNA9C(white panel)
GWH18RC-K3DNA9C(silver grey panel)
Product Code CB314000300
CB314000301
Power
Supply
Rated Voltage V 220-240
Rated Frequency Hz 50
Phases 1
Power Supply Mode Outdoor
Cooling Capacity W 5275
Heating Capacity W 5600
Cooling Power Input W 1620
Heating Power Input W 1650
Cooling Power Current A 7.19
Heating Power Current A 7.10
Rated Input W 2500
Rated Current A 10.87
Air Flow Volume (SH/H/M/L/SL) m3/h 850/780/740/300/-
Dehumidifying Volume L/h 1.8
EER W/W 3.26
COP W/W 3.39
SEER W/W /
HSPF W/W /
Application Area m223-34
Indoor Unit
Model of indoor unit GWH18RC-K3DNA9C/I(white panel)
GWH18RC-K3DNA9C/I(silver grey panel)
Fan Type &URVVÀRZ
Diameter Length (DXL) mm ĭ;
Fan Motor Cooling Speed (SH/H/M/L/SL) r/min 1350/1200/1000/800/-
Fan Motor Heating Speed (SH/H/M/L/SL) r/min 1420/1250/1100/950/-
Output of Fan Motor W 20
Fan Motor RLA A 0.31
Fan Motor Capacitor ȝ) 1.5
Input of Heater W /
Evaporator Form Aluminum Fin-copper Tube
Pipe Diameter mm ĭ
5RZ¿Q*DS mm 2-1.4
Coil Length (LXDXW) mm 715X25.4X304.8
Swing Motor Model MP28VB
Output of Swing Motor W 2.0
Fuse A 3.15
Sound Pressure Level (SH/H/M/L/SL) dB (A) 48/46/37/33/-
Sound Power Level (SH/H/M/L/SL) dB (A) 58/56/47/43/-
Dimension (WXHXD) mm 945X298X205
Dimension of Carton Box (LXWXH) mm 1010X380X285
Dimension of Package (LXWXH) mm 1013X383X300
Net Weight kg 12
Gross Weight kg 15

8Technical Information
Service Manual
Outdoor Unit
Model of Outdoor Unit GWH18RC-K3DNA8C/O
Outdoor Unit Product Code CB313W00400
Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO., LTD
Compressor Model QXA-B141zF030A
Compressor Oil 68EP
Compressor Type Rotary
L.R.A. A 25.00
Compressor RLA A 7.20
Compressor Power Input W 1440
Overload Protector 1NT11L-6233or HPC 115/95 or KSD115ć
Throttling Method Electron expansion valve
Operation temp ć16 30
Ambient temp (cooling) ć18 43
Ambient temp (heating) ć-7 24
Condenser Form Aluminum Fin-copper Tube
Pipe Diameter mm ĭ
5RZV¿Q*DS mm 2-1.4
Coil Length (LXDXW) mm 821.5X38.1X660
Fan Motor Speed rpm 800/300
Output of Fan Motor W /
Fan Motor RLA A /
Fan Motor Capacitor ȝ) /
Air Flow Volume of Outdoor Unit m3/h 3200
Fan Type $[LDOÀRZ
Fan Diameter mm ĭ
Defrosting Method Automatic Defrosting
Climate Type T1
Isolation I
Moisture Protection IP24
Permissible Excessive Operating Pressure
for the Discharge Side MPa 4.3
Permissible Excessive Operating Pressure
for the Suction Side MPa 2.5
Sound Pressure Level (H/M/L) dB (A) 56/-/-
Sound Power Level (H/M/L) dB (A) 66/-/-
Dimension (WXHXD) mm 965X700X396
Dimension of Carton Box (LXWXH) mm 1026X455X735
Dimension of Package (LXWXH) mm 1029X458X750
Net Weight kg 48
Gross Weight kg 52.5
Refrigerant R410A
Refrigerant Charge kg 1.30
Connection
Pipe
Length m 5
Gas Additional Charge g/m 20
Outer Diameter Liquid Pipe mm ĭ
Outer Diameter Gas Pipe mm ĭ
Max Distance Height m 10
Max Distance Length m 25
Note:The connection pipe applies metric diameter.
The above data is subject to change without notice; please refer to the nameplate of the unit.

9
Technical Information
Service Manual
2.2 Operation Characteristic Curve
2.3 Capacity Variation Ratio According to Temperature
Cooling Heating
0 10 20 30 40 50 60 70 90 0 10 20 30 40 50 60 70 80 90 100 120110
80
11
10
9
8
7
6
5
4
3
2
1
0
11
10
9
8
7
6
5
4
3
2
1
0
220V
230V
240V
220V
230V
240V
Current (A) Current (A)
Conditions
Indoor:DB27°C/WB19°C
Outdoor:DB35°C/WB24°C
Indoor air flow:Super High
Pipe length:5m
Conditions
Indoor:DB20°C/WB15°C
Outdoor:DB7°C/WB6°C
Indoor air flow:Super High
Pipe length:5m
Compressor speed (rps) Compressor speed (rps)
Cooling Heating
32 33 34 35 36 37 38 39 43 –15 –10 –5
40 41 42
100
105
95
90
85
80
75
70
65
60
55
50
110
100
90
80
70
60
50
40
05710
Outdoor temp.(°C) Outdoor temp.(°C)
Capacity ratio (%) Capacity ratio (%)
Conditions
Indoor:DB27°C/WB19°C
Outdoor:DB35°C/WB24°C
Indoor air flow:Super High
Pipe length:5m
Conditions
Indoor:DB20°C/WB15°C
Outdoor:DB7°C/WB6°C
Indoor air flow:Super High
Pipe length:5m

10 Technical Information
Service Manual
2.4 Cooling and Heating Data Sheet in Rated Frequency
Instruction:
T1: Inlet and outlet pipe temperature of evaporator
T2: Inlet and outlet pipe temperature of condenser
P: Pressure at the side of big valve
Connection pipe length: 5 m.
Cooling:
Heating:
2.5 Noise Curve
Indoor side noise Outdoor side noise
20
30
40
50
60
200 40 60 80 100
Compressor frequency/Hz
60
50
40
30
20
10
0
Indoor Fan Motor Rotating Speed
Noice/dB(A) Noice/dB(A)
low Middle High Super High
18K 24K
Rated cooling condition(ć)
(DB/WB) Model
Pressure of gas pipe
connecting indoor and
outdoor unit
Inlet and outlet pipe
temperature of heat
exchanger
Fan speed
of indoor
unit
Fan speed
of outdoor
unit
Compressor
revolution (rps)
Indoor Outdoor P (MPa) T1 (ć) T2 (ć)
27/19 35/24 18K 0.9~1.1 in:12~14
out:10~12
in:75~85
out:37~43 Super High High 70
27/19 35/24 24K 0.9~1.1 in:12~14
out:10~12
in:75~85
out:37~43 Super High High 53
Rated heating condition(ć)
(DB/WB) Model
Pressure of gas pipe
connecting indoor and
outdoor unit
Inlet and outlet pipe
temperature of heat
exchanger
Fan speed
of indoor
unit
Fan speed
of outdoor
unit
Compressor
revolution (rps)
Indoor Outdoor P (MPa) T1 (°C) T2 (°C)
20/15 7/6 18K 2.2~2.4 in:75~85
out:37~43
in:1~3
out:2~5 Super High High 70
20/15 7/6 24K 2.2~2.4 in:75~85
out:37~43
in:1~3
out:2~5 Super High High 49

11
Technical Information
Service Manual
3. Outline Dimension Diagram
3.1 Indoor Unit
D
W
57
38
144
95 60
194
116
189
694
685
ĭ
ĭ
H
Model W H D
A9 panel(18K) 945 298 205
Other panel(18K) 945 298 208
24K 1018 315 223
18K:
24K:
Unit:mm
ĭ
ĭ
45
45

12 Technical Information
Service Manual
1000
920
610
790
395
370
427
965
892
700
396
560
341
396
3.2 Outdoor Unit
Model:GWH18RC-K3DNA3C/O
Unit:mm
Unit:mm
Model:GWH24RD-K3DNA3C/O

13
Installation and Maintenance
Service Manual
427
1000
920
610
370
790
395
340
965
700
396
890
560
364
Unit:mm
Unit:mm
GWH18RC-K3DNA8C/O
GWH24RD-K3DNA8C/O

14 Technical Information
Service Manual
4. Refrigerant System Diagram
&RQQHFWLRQSLSHVSHFL¿FDWLRQ
Liquid pipe:1/4" (6mm)
Gas pipe:1/2" (12mm)18K
Gas pipe:5/8" (16mm)24K
Indoor unit Outdoor unit
COOLING
HEATING
4-Way valve
Discharge
Suction
Heat
exchanger
(evaporator) Heat
exchanger
(condenser)
Valve
Valve
Liquid pipe
side
Gas pipe
side
Strainer Strainer
Capillary

15
Technical Information
Service Manual
5. Electrical Part
5.1 Wiring Diagram
Ɣ,QGRRU8QLW
Ɣ,QVWUXFWLRQ
Symbol Symbol Color Symbol Symbol Color Symbol Name
WH White GN Green CAP Jumper cap
YE Yellow BN Brown COMP Compressor
RD Red BU Blue Grounding wire
YEGN Yellow/Green BK Black / /
VT Violet OG Orange / /
Note: Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model.
AP1
POWER
Models:GWH18RC-K3DNA3C/I GWH18RC-K3DNA2C/I GWH24RD-K3DNA3C/I GWH24RD-K3DNA2C/I
GWH18RC-K3DNA6C/I GWH24RD-K3DNA6C/I

16 Technical Information
Service Manual
Models:GWH18RC-K3DNA8C/I GWH24RD-K3DNA8C/I GWH24RD-K3DNA5C/I
Models:GWH18RC-K3DNA9C/I(white panel) GWH18RC-K3DNA9C/I(silver grey panel) GWH18RC-K3DNA5C/I
DISPLAY BOARD
RECEIVER AND
AP1
DISP1 DISP2
JUMP
CAP
MOTOR
PGF
N
COM-OUT
MOTOR
SWING
RT1
TUBE
N(1)
XT
OUTDOOR UNIT
FAN
BU
M1
0
YEGN
PG
BN
AP2
RT2
ROOM
SWING-UD
M2
TUBE ROOM
PE
BK
AC-L
TEMP. SENSOR TEMP. SENSOR
0
COLD PLASMA
GENERATOR
HEALTH-L
HEALTH-N
RD
BU
TERMINAL
BLOCK
L
L
(SWING)
C0NNECTING
CABLE
EVAPORATOR
3
2
BU
BK
BN
YEGN
PRINTED CIRCUIT BOARD
DISPLAY BOARD
RECEIVER AND
AP1
DISP1 DISP2
JUMP
CAP
MOTOR
PGF
N
COM-OUT
MOTOR
SWING
RT1
TUBE
N(1)
XT
OUTDOOR UNIT
FAN
BU
M1
0
YEGN
PG
BN
AP2
RT2
ROOM
SWING-UD
M2
TUBE ROOM
PE
BK
AC-L
TEMP. SENSOR TEMP. SENSOR
0
COLD PLASMA
GENERATOR
HEALTH-L
HEALTH-N
RD
BU
TERMINAL
BLOCK
L
L
(SWING)
C0NNECTING
CABLE
EVAPORATOR
3
2
BU
BK
BN
YEGN
PRINTED CIRCUIT BOARD

17
Technical Information
Service Manual
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Model:GWH18RC-K3DNA3C/O
4V
VTVT
VALVE
4YV
4-WAY
M1
OFAN
PE
YEGN
PE
FAN MOTOR
REACTOR
RING
MAGNETIC
RING
MAGNETIC
BU YE RD
L1
L1
L1
AP1
(OPTIONAL)
EKV
FA
BKWH
0
0
0
U(R) V(S)
T-SENSOR
6YEGN
AC-L
N
YEGN
BU
PE
BN
BK
BU YE RD
W(C,T)
PE PE
PE
COM-INNER
RT1 RT2 RT3
L2L2 L2
OVC-COMP
WH
WH SAT
YEGN
COMP
BK
BN
BU
X1
TERMINAL
COMP.
COMP-U COMP-V COMP-W
INDC2
OG
WH
INDC1
L
OUTTUBE
TEMP. SENSOR
OUTROOM
TEMP. SENSOR
EXHAUST
TEMP. SENSOR
PE
BLOCK
OVERLOAD
PROTECTOR
L3 L3
RING
MAGNETIC
INDOOR UNIT
XT
voltage of terminal P(DC+) and N(DC-) at
of electrical shock!
AP1 is higher than 30V to prevent the risk
Please don't touch any terminal when the
WARNING
N(1)
2
3
Model:GWH24RD-K3DNA3C/O
0
0
0
M1
OFAN
OVC-COMP
COMP.
AP1
FA
/
INDC1 INDC2
4V
PE
WARNING
INDOOR UNIT
2
3
T-SENSOR
AC-L
N
WVU
COM-INNER