Gree GWH18QD-K3DNA1G User manual

GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI
Change for Life
Service Manual
Models: GWH18QD-K3DNA1G
GWH18QD-K3DNA2G
GWH18QD-K3DNA5G
GWH18QD-K3DNA6G
GWH18QD-K3DNB2G
GWH18QD-K3DNB4G
GWH18QD-K3DNB6G
GWH18QD-K3DNB8G
GWH18QD-K3DNC2G
GWH24QE-K3DNA1G
GWH24QE-K3DNA2G
GWH24QE-K3DNA5G
GWH24QE-K3DNA6G
GWH24QE-K3DNB2G
GWH24QE-K3DNB4G
GWH24QE-K3DNB6G
GWH24QE-K3DNB8G
GWH24QE-K3DNC2G
(Refrigerant R410A)

Service Manual
Table of Contents
Table of Contents
Part Ⅰ: Technical Information.......................................................................1
1. Summary......................................................................................................................1
2. Specications..........................................................................................................3
2.1 Specication Sheet...........................................................................................................3
2.2 Operation Characteristic Curve ......................................................................................11
2.3 Capacity Variation Ratio According to Temperature ....................................................... 11
2.4 Cooling and Heating Data Sheet in Rated Frequency ...................................................12
2.5 Noise Curve....................................................................................................................12
3. Outline Dimension Diagram......................................................................13
3.1 Indoor Unit......................................................................................................................13
3.2 Outdoor Unit ...................................................................................................................14
4. Refrigerant System Diagram....................................................................15
5. Electrical Part.........................................................................................................16
5.1 Wiring Diagram...............................................................................................................16
5.2 PCB Printed Diagram .....................................................................................................20
6. Function and Control......................................................................................23
6.1 Remote Controller Introduction .....................................................................................23
6.2 Brief Description of Modes and Functions......................................................................27
Part Ⅱ: Installation and Maintenance .................................................36
7. Notes for Installation and Maintenance..........................................36
8. Installation................................................................................................................38
8.1 Installation Dimension Diagram......................................................................................38
8.2 Installation Parts-checking ............................................................................................40
8.3 Selection of Installation Location....................................................................................40
8.4 Electric Connection Requirement...................................................................................40
8.5 Installation of Indoor Unit................................................................................................40
8.6 Installation of Outdoor Unit.............................................................................................43
8.7 Vacuum Pumping and Leak Detection ...........................................................................44
8.8 Check after Installation and Test Operation ...................................................................44

Service Manual
Table of Contents
9. Maintenance............................................................................................................45
9.1 Malfunction Display of Indoor Unit..................................................................................45
9.2 Procedure of Troubleshooting ........................................................................................47
9.3 Troubleshooting for Normal Malfunction.........................................................................64
10. Exploded View and Parts List ..............................................................66
10.1 Indoor Unit....................................................................................................................66
10.2 Outdoor Unit .................................................................................................................86
11. Removal Procedure.......................................................................................89
11.1 Removal Procedure of Indoor Unit ...............................................................................89
11.2 Removal Procedure of Outdoor Unit ............................................................................94
Appendix:......................................................................................................................101
Appendix 1: Reference Sheet of Celsius and Fahrenheit ..................................................101
Appendix 2: Conguration of Connection Pipe...................................................................101
Appendix 3: Pipe Expanding Method .................................................................................102
Appendix 4: List of Resistance for Temperature Sensor ....................................................103

1
Technical Information
Service Manual
1. Summary
Part Ⅰ: Technical Information
Indoor Unit
A1 panel
A2 panel
A5 panel
GWH18QD-K3DNA5G/I(CB425N03402/CB425N03400)
GWH24QE-K3DNA5G/I(CB425N03302)
A5 panel
GWH18QD-K3DNA5G/I(CB425N03403)
GWH24QE-K3DNA5G/I(CB425N03303)
B2 panel
B4 panel
A6 panel

2Technical Information
Service Manual
Outdoor Unit
GWH18QD-K3DNA1G/O
GWH24QE-K3DNA1G/O
Remote Controller
YAN1F1
B6 panel
B8 panel
C2 panel

3
Technical Information
Service Manual
2. Specications
2.1 Specication Sheet
Parameter Unit Value
Model
1.GWH18QD-K3DNA1G 2.GWH18QD-K3DNA5G
3.GWH18QD-K3DNA6G 4.GWH18QD-K3DNB4G
5.GWH18QD-K3DNB6G
Product Code
1.CB419005600 2.CB425003402 CB425003403
3.CB427004400 4.CB434002002
5.CB435000202
Power
Supply
Rated Voltage V~ 220-240
Rated Frequency Hz 50
Phases 1
Power Supply Mode Outdoor
Cooling Capacity(Min~Max) W 5130(1260~6600)
Heating Capacity(Min~Max) W 5275(1120~6800)
Cooling Power Input(Min~Max) W 1580(380~2450)
Heating Power Input(Min~Max) W 1410(350~2600)
Cooling Current Input A 7.0
Heating Current Input A 6.3
Rated Input W 2600
Rated Current A 11.5
Air Flow Volume(SH/H/M//L/SL) m3/h 800/720/610/520/-
Dehumidifying Volume L/h 1.8
EER W/W 3.25
COP W/W 3.74
SEER W/W 6.1
HSPF W/W /
Application Area m223-34
Indoor
Unit
Indoor Unit Model
1.GWH18QD-K3DNA1G/I 2.GWH18QD-K3DNA5G/I
3.GWH18QD-K3DNA6G/I 4.GWH18QD-K3DNB4G/I
5.GWH18QD-K3DNB6G/I
Indoor Unit Product Code
1.CB419N05600 2.CB425N03402 CB425N03403
3.CB427N04400 4.CB434N02002
5.CB435N00202
Fan Type Cross-ow
Fan Diameter Length(DXL) mm Ф106X706
Cooling Speed(SH/H/M//L/SL) r/min 1230/1130/1030/900/-
Heating Speed(SH/H/M//L/SL) r/min 1250/1100/1000/900/-
Fan Motor Power Output W 35
Fan Motor RLA A 0.35
Fan Motor Capacitor μF 2.5
Evaporator Form Aluminum Fin-copper Tube
Evaporator Pipe Diameter mm Ф7
Evaporator Row-n Gap mm 2-1.4
Evaporator Coil Length (LXDXW) mm 715X25.4X304.8
Swing Motor Model MP35CJ
Swing Motor Power Output W 2.5
Fuse Current A 3.15
Sound Pressure Level(SH/H/M//L/SL) dB (A) 46/42/39/36/-
Sound Power Level(SH/H/M//L/SL) dB (A) 58/54/51/48/-
Dimension (WXHXD) mm 970X300X224
Dimension of Carton Box (LXWXH) mm 1038X380X305
Dimension of Package(LXWXH) mm 1041X383X320
Net Weight kg 13.5
Gross Weight kg 16.5

4Technical Information
Service Manual
Outdoor
Unit
Outdoor Unit Model GWH18QD-K3DNA1G/O
Outdoor Unit Product Code CB419W05600
Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO.,LTD
Compressor Model QXA-B141zF030
Compressor Oil 68EP
Compressor Type Rotary
Compressor LRA. A 18
Compressor RLA A 7.5
Compressor Power Input W 1440
Compressor Overload Protector 1NT11L-6233 or KSD115ºC or HPC115/95U1
Throttling Method Capillary
Set Temperature Range ºC 16~30
Cooling Operation Ambient Temperature
Range ºC -15~43
Heating Operation Ambient Temperature
Range ºC -15~24
Condenser Form Aluminum Fin-copper Tube
Condenser Pipe Diameter mm Φ7
Condenser Rows-n Gap mm 2-1.4
Condenser Coil Length (LXDXW) mm 851X38.1X660
Fan Motor Speed rpm 750
Fan Motor Power Output W 60
Fan Motor RLA A /
Fan Motor Capacitor μF /
Outdoor Unit Air Flow Volume m3/h 3200
Fan Type Axial-ow
Fan Diameter mm Ф520
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) 63/-/-
Dimension(WXHXD) mm 963X700X396
Dimension of Carton Box (LXWXH) mm 1026X455X735
Dimension of Package(LXWXH) mm 1029X458X750
Net Weight kg 45
Gross Weight kg 49.5
Refrigerant R410A
Refrigerant Charge kg 1.3
Connection
Pipe
Connection Pipe Length m 5
Connection Pipe Gas Additional Charge g/m 20
Outer Diameter Liquid Pipe mm Ф6
Outer Diameter Gas Pipe mm Ф12
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.

5
Technical Information
Service Manual
Parameter Unit Value
Model
1.GWH18QD-K3DNA1G 2.GWH18QD-K3DNA2G
3.GWH18QD-K3DNA5G 4.GWH18QD-K3DNB2G
5.GWH18QD-K3DNB4G 6.GWH18QD-K3DNB6G
7.GWH18QD-K3DNB8G 8.GWH18QD-K3DNC2G
Product Code
1.CB419005601 2.CB426001401
3.CB425003401 4.CB432002301
5.CB434002001 6.CB435000201
7.CB438000501 8.CB439000201
Power
Supply
Rated Voltage V~ 220-240
Rated Frequency Hz 50
Phases 1
Power Supply Mode Outdoor
Cooling Capacity(Min~Max) W 5130(1260~6600)
Heating Capacity(Min~Max) W 5275(1120~6800)
Cooling Power Input(Min~Max) W 1580(380~2450)
Heating Power Input(Min~Max) W 1410(350~2600)
Cooling Current Input A 7.0
Heating Current Input A 6.3
Rated Input W 2600
Rated Current A 11.5
Air Flow Volume(SH/H/M//L/SL) m3/h 800/720/610/520/-
Dehumidifying Volume L/h 1.8
EER W/W 3.25
COP W/W 3.74
SEER W/W 6.1
HSPF W/W /
Application Area m223-34
Indoor
Unit
Indoor Unit Model
1.GWH18QD-K3DNA1G/I 2.GWH18QD-K3DNA2G/I
3.GWH18QD-K3DNA5G/I 4.GWH18QD-K3DNB2G/I
5.GWH18QD-K3DNB4G/I 6.GWH18QD-K3DNB6G/I
7.GWH18QD-K3DNB8G/I 8.GWH18QD-K3DNC2G/I
Indoor Unit Product Code
1.CB419N05601 2.CB426N01400
3.CB425N03400 4.CB432N02300
5.CB434N02000 6.CB435N00200
7.CB438N00500 8.CB439N00200
Fan Type Cross-ow
Fan Diameter Length(DXL) mm Ф106X706
Cooling Speed(SH/H/M//L/SL) r/min 1230/1130/1030/900/-
Heating Speed(SH/H/M//L/SL) r/min 1250/1100/1000/900/-
Fan Motor Power Output W 35
Fan Motor RLA A 0.35
Fan Motor Capacitor μF 2.5
Evaporator Form Aluminum Fin-copper Tube
Evaporator Pipe Diameter mm Ф7
Evaporator Row-n Gap mm 2-1.4
Evaporator Coil Length (LXDXW) mm 715X25.4X304.8
Swing Motor Model MP35CJ
Swing Motor Power Output W 2.5
Fuse Current A 3.15
Sound Pressure Level(SH/H/M//L/SL) dB (A) 46/42/39/36/-
Sound Power Level(SH/H/M//L/SL) dB (A) 58/54/51/48/-
Dimension (WXHXD) mm 970X300X224
Dimension of Carton Box (LXWXH) mm 1038X380X305
Dimension of Package(LXWXH) mm 1041X383X320
Net Weight kg 13.5
Gross Weight kg 16.5

6Technical Information
Service Manual
Outdoor
Unit
Outdoor Unit Model GWH18QD-K3DNA1G/O
Outdoor Unit Product Code CB419W05601
Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO.,LTD
Compressor Model QXA-B141zF030
Compressor Oil 68EP
Compressor Type Rotary
Compressor LRA. A 18
Compressor RLA A 7.5
Compressor Power Input W 1440
Compressor Overload Protector 1NT11L-6233 or KSD115ºC or HPC115/95U1
Throttling Method Capillary
Set Temperature Range ºC 16~30
Cooling Operation Ambient Temperature
Range ºC -15~43
Heating Operation Ambient Temperature
Range ºC -20~24
Condenser Form Aluminum Fin-copper Tube
Condenser Pipe Diameter mm Φ7
Condenser Rows-n Gap mm 2-1.4
Condenser Coil Length (LXDXW) mm 851X38.1X660
Fan Motor Speed rpm 750
Fan Motor Power Output W 60
Fan Motor RLA A /
Fan Motor Capacitor μF /
Outdoor Unit Air Flow Volume m3/h 3200
Fan Type Axial-ow
Fan Diameter mm Ф520
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) 63/-/-
Dimension(WXHXD) mm 963X700X396
Dimension of Carton Box (LXWXH) mm 1026X455X735
Dimension of Package(LXWXH) mm 1029X458X750
Net Weight kg 45
Gross Weight kg 49.5
Refrigerant R410A
Refrigerant Charge kg 1.3
Connection
Pipe
Connection Pipe Length m 5
Connection Pipe Gas Additional Charge g/m 20
Outer Diameter Liquid Pipe mm Ф6
Outer Diameter Gas Pipe mm Ф12
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.

7
Technical Information
Service Manual
Parameter Unit Value
Model
1.GWH24QE-K3DNA1G 2.GWH24QE-K3DNA2G
3.GWH24QE-K3DNA5G 4.GWH24QE-K3DNA6G
5.GWH24QE-K3DNB4G 6.GWH24QE-K3DNB6G
Product Code
1.CB419005300 CB419005302 2.CB426001501
3.CB425003302 CB425003303 4.CB427004500
5.CB434002202 6.CB435000303
Power
Supply
Rated Voltage V~ 220-240
Rated Frequency Hz 50
Phases 1
Power Supply Mode Outdoor
Cooling Capacity(Min~Max) W 6700(2000~8200)
Heating Capacity(Min~Max) W 7250(2000~8500)
Cooling Power Input(Min~Max) W 1875(400~3700)
Heating Power Input(Min~Max) W 1945(450~3800)
Cooling Current Input A 8.32
Heating Current Input A 8.63
Rated Input W 3800
Rated Current A 16.86
Air Flow Volume(SH/H/M//L/SL) m3/h 1150/1000/900/800/-
Dehumidifying Volume L/h 2.1
EER W/W 3.57
COP W/W 3.73
SEER W/W 6.30
HSPF W/W /
Application Area m223-34
Indoor
Unit
Indoor Unit Model
1.GWH24QE-K3DNA1G/I 2.GWH24QE-K3DNA2G/I
3.GWH24QE-K3DNA5G/I 4.GWH24QE-K3DNA6G/I
5.GWH24QE-K3DNB4G/I 6.GWH24QE-K3DNB6G/I
Indoor Unit Product Code
2.CB419N05300 CB419N05302 2.CB426N01500
3.CB425N03302 CB425N03303 4.CB427N04500
5.CB434N02202 6.CB435N00303
Fan Type Cross-ow
Fan Diameter Length(DXL) mm Φ108X830
Cooling Speed(SH/H/M//L/SL) r/min 1250/1000/900/800/-
Heating Speed(SH/H/M//L/SL) r/min 1250/1000/900/850/-
Fan Motor Power Output W 35
Fan Motor RLA A 0.35
Fan Motor Capacitor μF 3
Evaporator Form Aluminum Fin-copper Tube
Evaporator Pipe Diameter mm Ф7
Evaporator Row-n Gap mm 2-1.4
Evaporator Coil Length (LXDXW) mm 845X25.4X342.9
Swing Motor Model MP35CJ
Swing Motor Power Output W 2.5
Fuse Current A 3.15
Sound Pressure Level(SH/H/M//L/SL) dB (A) 48/45/42/39/-
Sound Power Level(SH/H/M//L/SL) dB (A) 64/59/56/53/-
Dimension (WXHXD) mm 1078X325X246
Dimension of Carton Box (LXWXH) mm 1145X410X335
Dimension of Package(LXWXH) mm 1148X413X350
Net Weight kg 17
Gross Weight kg 20.5

8Technical Information
Service Manual
Outdoor
Unit
Outdoor Unit Model GWH24QE-K3DNA1G/O
Outdoor Unit Product Code CB419W05300
Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO,LTD.
Compressor Model QXAS-D23zX090A
Compressor Oil FV50S
Compressor Type Rotary
Compressor LRA. A 25
Compressor RLA A 11.50
Compressor Power Input W 2550
Compressor Overload Protector 1NT11L-6233 or HPC115/95/ or KSD115ºC
Throttling Method Electron expansion valve+Capillary
Set Temperature Range ºC 16~30
Cooling Operation Ambient Temperature
Range ºC -15~43
Heating Operation Ambient Temperature
Range ºC -15~24
Condenser Form Aluminum Fin-copper Tube
Condenser Pipe Diameter mm Φ7
Condenser Rows-n Gap mm 2-1.4
Condenser Coil Length (LXDXW) mm 935X38.1X660
Fan Motor Speed rpm 800/300
Fan Motor Power Output W 60
Fan Motor RLA A /
Fan Motor Capacitor μF /
Outdoor Unit Air Flow Volume m3/h 3200
Fan Type Axial-ow
Fan Diameter mm Ф520
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) 60/-/-
Sound Power Level (H/M/L) dB (A) 68/-/-
Dimension(WXHXD) mm 963X700X396
Dimension of Carton Box (LXWXH) mm 1026X455X735
Dimension of Package(LXWXH) mm 1029X458X750
Net Weight kg 53
Gross Weight kg 57.5
Refrigerant R410A
Refrigerant Charge kg 1.9
Connection
Pipe
Connection Pipe Length m 5
Connection Pipe Gas Additional Charge g/m 50
Outer Diameter Liquid Pipe mm Ф6
Outer Diameter Gas Pipe mm Ф16
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
Parameter Unit Value
Model
1.GWH24QE-K3DNA1G 2.GWH24QE-K3DNA5G
3.GWH24QE-K3DNB2G 4.GWH24QE-K3DNB4G
5.GWH24QE-K3DNB6G 6.GWH24QE-K3DNB8G
7.GWH24QE-K3DNC2G
Product Code
1.CB419005301 2.CB425003301
3.CB432002401 4.CB434002201
5.CB435000301 CB435000302 6.CB438000701
7.CB439000301
Power
Supply
Rated Voltage V~ 220-240
Rated Frequency Hz 50
Phases 1
Power Supply Mode Outdoor
Cooling Capacity(Min~Max) W 6700(2000~8200)
Heating Capacity(Min~Max) W 7250(2000~8500)
Cooling Power Input(Min~Max) W 1875(400~3700)
Heating Power Input(Min~Max) W 1945(450~3800)
Cooling Current Input A 8.32
Heating Current Input A 8.63
Rated Input W 3800
Rated Current A 16.86
Air Flow Volume(SH/H/M//L/SL) m3/h 1150/1000/900/800/-
Dehumidifying Volume L/h 2.1
EER W/W 3.57
COP W/W 3.73
SEER W/W 6.30
HSPF W/W /
Application Area m223-34
Indoor
Unit
Indoor Unit Model
1.GWH24QE-K3DNA1G/I 2.GWH24QE-K3DNA5G/I
3.GWH24QE-K3DNB2G/I 4.GWH24QE-K3DNB4G/I
5.GWH24QE-K3DNB6G/I 6.GWH24QE-K3DNB8G/I
7.GWH24QE-K3DNC2G/I
Indoor Unit Product Code
1.CB419N05300 2.CB425N03300
3.CB432N02400 4.CB434N02200
5.CB435N00300 CB435N00302 6.CB438N00700
7.CB439N00300
Fan Type Cross-ow
Fan Diameter Length(DXL) mm Φ108X830
Cooling Speed(SH/H/M//L/SL) r/min 1250/1000/900/800/-
Heating Speed(SH/H/M//L/SL) r/min 1250/1000/900/850/-
Fan Motor Power Output W 35
Fan Motor RLA A 0.35
Fan Motor Capacitor μF 3
Evaporator Form Aluminum Fin-copper Tube
Evaporator Pipe Diameter mm Ф7
Evaporator Row-n Gap mm 2-1.4
Evaporator Coil Length (LXDXW) mm 845X25.4X342.9
Swing Motor Model MP35CJ
Swing Motor Power Output W 2.5
Fuse Current A 3.15
Sound Pressure Level(SH/H/M//L/SL) dB (A) 48/45/42/39/-
Sound Power Level(SH/H/M//L/SL) dB (A) 64/59/56/53/-
Dimension (WXHXD) mm 1078X325X246
Dimension of Carton Box (LXWXH) mm 1145X410X335
Dimension of Package(LXWXH) mm 1148X413X350
Net Weight kg 17
Gross Weight kg 20.5

10 Technical Information
Service Manual
Outdoor
Unit
Outdoor Unit Model GWH24QE-K3DNA1G/O
Outdoor Unit Product Code CB419W05301
Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO,LTD.
Compressor Model QXAS-D23zX090A
Compressor Oil FV50S
Compressor Type Rotary
Compressor LRA. A 25
Compressor RLA A 11.50
Compressor Power Input W 2550
Compressor Overload Protector 1NT11L-6233 or HPC115/95/ or KSD115ºC
Throttling Method Electron expansion valve+Capillary
Set Temperature Range ºC 16~30
Cooling Operation Ambient Temperature
Range ºC -15~43
Heating Operation Ambient Temperature
Range ºC -20~24
Condenser Form Aluminum Fin-copper Tube
Condenser Pipe Diameter mm Φ7
Condenser Rows-n Gap mm 2-1.4
Condenser Coil Length (LXDXW) mm 935X38.1X660
Fan Motor Speed rpm 800/300
Fan Motor Power Output W 60
Fan Motor RLA A /
Fan Motor Capacitor μF /
Outdoor Unit Air Flow Volume m3/h 3200
Fan Type Axial-ow
Fan Diameter mm Ф520
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) 60/-/-
Sound Power Level (H/M/L) dB (A) 68/-/-
Dimension(WXHXD) mm 963X700X396
Dimension of Carton Box (LXWXH) mm 1026X455X735
Dimension of Package(LXWXH) mm 1029X458X750
Net Weight kg 53
Gross Weight kg 57.5
Refrigerant R410A
Refrigerant Charge kg 1.9
Connection
Pipe
Connection Pipe Length m 5
Connection Pipe Gas Additional Charge g/m 50
Outer Diameter Liquid Pipe mm Ф6
Outer Diameter Gas Pipe mm Ф16
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.

11
Technical Information
Service Manual
2.2 Operation Characteristic Curve
2.3 Capacity Variation Ratio According to Temperature
01020304050607090010 20 30 40 50 60 70 80 90 100 120110
80
11
10
9
8
7
6
5
4
3
2
1
0
Compressor speed (rps)
)A(tnerruC
11
10
9
8
7
6
5
4
3
2
1
0
Compressor speed (rps)
)A(tnerruC
220V
230V
240V
220V
230V
240V
01020304050607090010 20 30 40 50 60 70 80 90 100
120
110
80
11
10
9
8
7
6
5
4
3
2
1
0
Compressor speed (rps)
)A(tnerruC
11
10
9
8
7
6
5
4
3
2
1
0
Compressor speed (rps)
)A(tnerruC
220V
230V
240V
220V
230V
240V
Conditions
Indoor: DB27°C/WB19°C
Outdoor: DB35°C/WB24°C
Indoor air flow: High
Pipe length: 5m
Conditions
Indoor: DB27°C/WB19°C
Outdoor: DB35°C/WB24°C
Indoor air flow: High
Pipe length: 5m
Conditions
Indoor: DB20°C/WB15°C
Outdoor: DB7°C/WB6°C
Indoor air flow: High
Pipe length: 5m
Conditions
Indoor: DB20°C/WB15°C
Outdoor: DB7°C/WB6°C
Indoor air flow: High
Pipe length: 5m
Cooling Heating
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
05
710
Conditions
Indoor:DB27°C/WB19°C
Indoor air flow:Super High
Pipe length: 5m
Conditions
Indoor:DB20°C/WB15°C
Indoor air flow:Super High
Pipe length: 5m
Outdoor temp.(°C) Outdoor temp.(°C)
Capacity ratio (%)
Capacity ratio (%)
Cooling Heating
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
Conditions
Indoor:DB27°C/WB19°C
Indoor air flow:Super High
Pipe length: 5m
Conditions
Indoor:DB20°C/WB15°C
Indoor air flow:Super High
Pipe length: 5m
Outdoor temp.(°C) Outdoor temp.(°C)
Capacity ratio (%) Capacity ratio (%)
30
40
50
60
70
80
90
100
110
120
10
750-5-10-15-20
Outdoor temp.(oC)
Capacity ratio(%)
Conditions
Indoor:DB20°C/WB15°C
Indoor air flow:Super High
Pipe length: 5m
Cooling Heating
Heating operation ambient temperature range is -15°C~24°C
Heating operation ambient temperature range is -20°C~24°C

12 Technical Information
Service Manual
2.4 Cooling and Heating Data Sheet in Rated Frequency
Rated cooling
condition(°C)
(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
frequency
(Hz)
Indoor Outdoor P (MPa) T1 (°C) T2 (°C)
27/19 35/24 18K 0.9 to 1.1 12 to 14 75 to 37 Super High High 52
24K 72
Rated heating
condition(°C)
(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
frequency
(Hz)
Indoor Outdoor P (MPa) T1 (°C) T2 (°C)
20/- 7/6 18K 2.2 to 2.4 70 to 35 2 to 4 Super High High 65
24K 77
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 when blowing Outdoor side noise when blowing
Indoor fan motor rotating speed
Compressor frequency(Hz)
Noise/dB(A)
50
60
30
40
20
Low Middle High Super High
50
52
54
56
58
60
62
64
68
20 4030 50 60 70 80
90
Noise dB(A)
18K
24K
24K
18K

13
Technical Information
Service Manual
3. Outline Dimension Diagram
3.1 Indoor Unit
W
24K
18K
D
H
79
154
43
206 685 187
Φ70 Φ70
43
104 685 181
140
190
38
Φ55 Φ55
38
Model W
HD
18K970 30
02
24
24K1078 325246
Unit:m
m

14 Technical Information
Service Manual
963
892
700
396
560
341
396
3.2 Outdoor Unit
Unit:mm

15
Technical Information
Service Manual
4. Refrigerant System Diagram
Connection pipe specication:
Liquid pipe:1/4" (6mm)
Gas pipe:5/8" (16mm)
Connection pipe specication:
Liquid pipe:1/4" (6mm)
Gas pipe:1/2" (12mm)
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 Electric
expand
valve
Strainer
Capillary
Compressor
Accumlator
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 Electric
expand
valve
Strainer
Capillary
Compressor
Accumlator
18K
24K

16 Technical Information
Service Manual
5. Electrical Part
5.1 Wiring Diagram
● Indoor Unit
● Instruction
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.
GWH18QD-K3DNA1G/I(CB419N05600) GWH18QD-K3DNA5G/I(CB425N03400/CB425N03403) GWH18QD-K3DNA6G/I(CB427N04400)
GWH18QD-K3DNB6G/I(CB435N00202) GWH24QE-K3DNA1G/I(CB419N05302) GWH24QE-K3DNA5G/I(CB425N03300/CB425N03303)
GWH24QE-K3DNA6G/I(CB427N04500) GWH24QE-K3DNB4G/I(CB434N02202) GWH24QE-K3DNB6G/I(CB435N00302/CB435N00303)
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17
Technical Information
Service Manual
● Outdoor Unit
GWH18QD-K3DNA1G/O(CB419W05600)
GWH18QD-K3DNA1G/I(CB419N05601) GWH18QD-K3DNA2G/I(CB426N01400) GWH18QD-K3DNB6G/I(CB435N00200)
GWH18QD-K3DNB2G/I(CB432N02300) GWH18QD-K3DNB4G/I(CB434N02000) GWH18QD-K3DNB8G/I(CB438N00500)
GWH18QD-K3DNC2G/I(CB439N00200) GWH24QE-K3DNA1G/I(CB419N05300) GWH24QE-K3DNA2G/I(CB426N01500)
GWH24QE-K3DNA5G/I(CB425N03302) GWH24QE-K3DNB2G/I(CB432N02400) GWH24QE-K3DNB4G/I(CB434N02200)
GWH24QE-K3DNB6G/I(CB435N00300) GWH24QE-K3DNB8G/I(CB438N00700) GWH24QE-K3DNC2G/I(CB439N00300)
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32:(5
Please don't touch any terminal
when the voltage of terminal
P(DC+) and N(DC-) at AP1 is
higher than 30V to prevent the
risk of electric shock !
:$51,1*
%1