Gree GWH18KG-K3DNA5G User manual

GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI
Change for Life
Service Manual
Models: GWH18KG-K3DNA5G
GWH18KG-K3DNA6G
GWH18KG-K3DNA9G
GWH18KG-K3DNB2G
GWH24KG-K3DNA5G
GWH24KG-K3DNA6G
GWH24KG-K3DNA9G
GWH24KG-K3DNB2G
(Refrigerant R410A)

Service Manual
Table of Contents
Table of Contents
Part Ⅰ: Technical Information .......................................................................1
1. Summary ......................................................................................................................1
2. Specications ..........................................................................................................2
2.1 Specication Sheet ...........................................................................................................2
2.2 Operation Characteristic Curve ........................................................................................6
2.3 Capacity Variation Ratio According to Temperature .........................................................6
2.4 Cooling and Heating Data Sheet in Rated Frequency .....................................................7
2.5 Noise Curve ......................................................................................................................7
3. Outline Dimension Diagram .........................................................................................8
3.1 Indoor Unit ........................................................................................................................8
3.2 Outdoor Unit .....................................................................................................................9
4. Refrigerant System Diagram ....................................................................10
5. Electrical Part.........................................................................................................11
5.1 Wiring Diagram ...............................................................................................................11
5.2 PCB Printed Diagram .....................................................................................................14
6. Function and Control ......................................................................................16
6.1 Remote Controller Introduction .....................................................................................16
6.2 Brief Description of Modes and Functions ......................................................................20
Part Ⅱ: Installation and Maintenance .................................................26
7. Notes for Installation and Maintenance ..........................................26
8. Installation ................................................................................................................28
8.1 Installation Dimension Diagram ......................................................................................28
8.2 Installation Parts-checking ............................................................................................30
8.3 Selection of Installation Location ....................................................................................30
8.4 Electric Connection Requirement ...................................................................................30
8.5 Installation of Indoor Unit ................................................................................................30
8.6 Installation of Outdoor Unit .............................................................................................33
8.7 Vacuum Pumping and Leak Detection ...........................................................................34
8.8 Check after Installation and Test Operation ...................................................................34

Service Manual
Table of Contents
9. Maintenance ............................................................................................................35
9.1 Malfunction Display of Indoor Unit ..................................................................................35
9.2 Procedure of Troubleshooting ........................................................................................37
9.3 Troubleshooting for Normal Malfunction .........................................................................54
10. Exploded View and Parts List ..............................................................56
10.1 Indoor Unit ....................................................................................................................56
10.2 Outdoor Unit .................................................................................................................62
11. Removal Procedure .......................................................................................66
11.1 Removal Procedure of Intdoor Unit ..............................................................................66
11.2 Removal Procedure of Outdoor Unit ............................................................................72
Appendix: ........................................................................................................................84
Appendix 1: Reference Sheet of Celsius and Fahrenheit ....................................................84
Appendix 2: Conguration of Connection Pipe .....................................................................84
Appendix 3: Pipe Expanding Method ...................................................................................85
Appendix 4: List of Resistance for Temperature Sensor ......................................................86

1
Technical Information
Service Manual
1. Summary
Part Ⅰ: Technical Information
Indoor Unit
Outdoor Unit
GWH18KG-K3DNA6G/O
GWH24KG-K3DNA6G/O
GWH18KG-K3DNA6G/I
GWH24KG-K3DNA6G/I
GWH18KG-K3DNA5G/I
GWH24KG-K3DNA5G/I
GWH18KG-K3DNB2G/I
GWH24KG-K3DNB2G/I
GWH18KG-K3DNA9G/I
GWH24KG-K3DNA9G/I
Remote Controller
YB1F2(XFAN)
FAN
AUTO
OPER
HEALTH
AIR
FILTER
TURBO
ON/OFF
X-FAN
HOUR
HUMIDITY
ON/OFF
MODE
FAN
X-FAN
TURBO
TEMP
TIMER
SLEEP LIGHT
ON/OFF

2Technical Information
Service Manual
2. Specications
2.1 Specication Sheet
Parameter Unit Value Value
Model 1.GWH18KG-K3DNA6G
2.GWH18KG-K3DNA9G
1.GWH18KG-K3DNA5G
2.GWH18KG-K3DNA6G
3.GWH18KG-K3DNB2G
Product Code 1.CB146036000
2.CB146037300
1.CB146037401
2.CB146036001
3.CB409002501
Power
Supply
Rated Voltage V~ 220-240 220-240
Rated Frequency Hz 50 50
Phases 1 1
Power Supply Mode Outdoor Outdoor
Cooling Capacity(Min~Max) W 5275(1200~6200) 5275(1200~6200)
Heating Capacity(Min~Max) W 5570(1100~6000) 5570(1100~6000)
Cooling Power Input(Min~Max) W 1675(380~2450) 1675(380~2450)
Heating Power Input(Min~Max) W 1750(350~2600) 1750(350~2600)
Cooling Current Input A 7.43 7.43
Heating Current Input A 7.80 7.80
Rated Input W 2650 2650
Rated Current A 11.80 11.80
Air Flow Volume(SH/H/M//L/SL) m3/h 800/680/560/460/- 800/680/560/460/-
Dehumidifying Volume L/h 1.8 1.8
EER W/W 3.15 3.15
COP W/W 3.18 3.18
SEER W/W 5.60 5.60
HSPF W/W / /
Application Area m223-34 23-34
Indoor
Unit
Indoor Unit Model 1.GWH18KG-K3DNA6G/I
2.GWH18KG-K3DNA9G/I
1.GWH18KG-K3DNA5G/I
2.GWH18KG-K3DNA6G/I
3.GWH18KG-K3DNB2G/I
Indoor Unit Product Code 1.CB146N36000
2.CB146N37300
1.CB146N37400
2.CB146N36000
3.CB409N02500
Fan Type Cross-ow Cross-ow
Fan Diameter Length(DXL) mm Ф98X650 Ф98X650
Cooling Speed(SH/H/M//L/SL) r/min 1350/1100/950/800/- 1350/1100/950/800/-
Heating Speed(SH/H/M//L/SL) r/min 1400/1200/1050/900/- 1400/1200/1050/900/-
Fan Motor Power Output W 20 20
Fan Motor RLA A 0.31 0.31
Fan Motor Capacitor μF 1.5 1.5
Evaporator Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Evaporator Pipe Diameter mm Ф7 Ф7
Evaporator Row-n Gap mm 2-1.4 2-1.4
Evaporator Coil Length (LXDXW) mm 657X25.4X304.8 657X25.4X304.8
Swing Motor Model MP28VB MP28VB
Swing Motor Power Output W 2 2
Fuse Current A 3.15 3.15
Sound Pressure Level(SH/H/M//L/SL) dB (A) 49/44/40/35/- 49/44/40/35/-
Sound Power Level(SH/H/M//L/SL) dB (A) 60/55/51/46/- 60/55/51/46/-
Dimension (WXHXD) mm 867X305X215 867X305X215
Dimension of Carton Box (LXWXH) mm 945X380X295 945X380X295
Dimension of Package(LXWXH) mm 948X383X310 948X383X310
Net Weight kg 12 12
Gross Weight kg 15 15

3
Technical Information
Service Manual
Outdoor
Unit
Outdoor Unit Model GWH18KG-K3DNA6G/O GWH18KG-K3DNA6G/O
Outdoor Unit Product Code CB146W36000 CB146W36001
Compressor Manufacturer ZHUHAI LANDA COMPRESSOR
CO.,LTD
ZHUHAI LANDA COMPRESSOR
CO.,LTD
Compressor Model QXA-B141zF030A QXA-B141zF030A
Compressor Oil 68EP 68EP
Compressor Type Rotary Rotary
Compressor LRA. A 25 25
Compressor RLA A 7.2 7.2
Compressor Power Input W 1440 1440
Compressor Overload Protector 1NT11L-6233 or KSD115oC or
HPC115/95U1
1NT11L-6233 or KSD115oC or
HPC115/95U1
Throttling Method Capillary Capillary
Set Temperature Range ºC 16~30 16~30
Cooling Operation Ambient Temperature
Range ºC -15~43 -15~43
Heating Operation Ambient Temperature
Range ºC -15~24 -20~24
Condenser Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Condenser Pipe Diameter mm Ф7 Ф7
Condenser Rows-n Gap mm 2-1.4 2-1.4
Condenser Coil Length (LXDXW) mm 851X38.1X660 851X38.1X660
Fan Motor Speed rpm 750 750
Fan Motor Power Output W 60 60
Fan Motor RLA A / /
Fan Motor Capacitor μF / /
Outdoor Unit Air Flow Volume m3/h 3200 3200
Fan Type Axial-ow Axial-ow
Fan Diameter mm Ф520 Ф520
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) 55/-/- 55/-/-
Sound Power Level (H/M/L) dB (A) 65-/- 65-/-
Dimension(WXHXD) mm 963X700X396 963X700X396
Dimension of Carton Box (LXWXH) mm 1026X455X735 1026X455X735
Dimension of Package(LXWXH) mm 1029X458X750 1029X458X750
Net Weight kg 46 46
Gross Weight kg 50.5 50.5
Refrigerant R410A R410A
Refrigerant Charge kg 1.3 1.3
Connection
Pipe
Connection Pipe Length m 5 5
Connection Pipe Gas Additional Charge g/m 20 20
Outer Diameter Liquid Pipe mm Ф6 Ф6
Outer Diameter Gas Pipe mm Ф12 Ф12
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.

4Technical Information
Service Manual
Parameter Unit Value Value
Model 1.GWH24KG-K3DNA6G
2.GWH24KG-K3DNA9G
1.GWH24KG-K3DNA5G
2.GWH24KG-K3DNA6G
3.GWH24KG-K3DNB2G
Product Code 1.CB146035900
2.CB146037200
1.CB146037701
2.CB146035901
3.CB409002601
Power
Supply
Rated Voltage V~ 220-240 220-240
Rated Frequency Hz 50 50
Phases 1 1
Power Supply Mode Outdoor Outdoor
Cooling Capacity(Min~Max) W 6450(2530~6550) 6450(2530~6550)
Heating Capacity(Min~Max) W 7000(2530~7600) 7000(2530~7600)
Cooling Power Input(Min~Max) W 2180(600~2650) 2180(600~2650)
Heating Power Input(Min~Max) W 2220(600~2800) 2220(600~2800)
Cooling Current Input A 9.7 9.7
Heating Current Input A 10.5 10.5
Rated Input W 2800 2800
Rated Current A 12.5 12.5
Air Flow Volume(SH/H/M//L/SL) m3/h 1000/800/700/550/- 1000/800/700/550/-
Dehumidifying Volume L/h 2.1 2.1
EER W/W 2.96 2.96
COP W/W 3.15 3.15
SEER W/W 5.60 5.60
HSPF W/W / /
Application Area m223-34 23-34
Indoor
Unit
Indoor Unit Model 1.GWH24KG-K3DNA6G/I
2.GWH24KG-K3DNA9G/I
1.GWH24KG-K3DNA5G/I
2.GWH24KG-K3DNA6G/I
3.GWH24KG-K3DNB2G/I
Indoor Unit Product Code 1.CB146N35900
2.CB146N37200
1.CB146N37700
2.CB146N35900
3.CB409N02600
Fan Type Cross-ow Cross-ow
Fan Diameter Length(DXL) mm Φ98X765 Φ98X765
Cooling Speed(SH/H/M//L/SL) r/min 1350/1150/1000/850/- 1350/1150/1000/850/-
Heating Speed(SH/H/M//L/SL) r/min 1400/1200/1000/900/- 1400/1200/1000/900/-
Fan Motor Power Output W 35 35
Fan Motor RLA A 0.31 0.31
Fan Motor Capacitor μF 2.5 2.5
Evaporator Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Evaporator Pipe Diameter mm Φ7 Φ7
Evaporator Row-n Gap mm 2-1.5 2-1.5
Evaporator Coil Length (LXDXW) mm 765X25.4X342.9 765X25.4X342.9
Swing Motor Model MP35XX MP35XX
Swing Motor Power Output W 2.5 2.5
Fuse Current A 3.15 3.15
Sound Pressure Level(SH/H/M//L/SL) dB (A) 51/47/42/39/- 51/47/42/39/-
Sound Power Level(SH/H/M//L/SL) dB (A) 61/57/52/49/- 61/57/52/49/-
Dimension (WXHXD) mm 1007X315X219 1007X315X219
Dimension of Carton Box (LXWXH) mm 1073X395X313 1073X395X313
Dimension of Package(LXWXH) mm 1076X398X328 1076X398X328
Net Weight kg 14 14
Gross Weight kg 17 17

5
Technical Information
Service Manual
Outdoor
Unit
Outdoor Unit Model GWH24KG-K3DNA6G/O GWH24KG-K3DNA6G/O
Outdoor Unit Product Code CB146W35900 CB146W35901
Compressor Manufacturer ZHUHAI LANDA COMPRESSOR
CO.,LTD
ZHUHAI LANDA COMPRESSOR
CO.,LTD
Compressor Model QXA-B141zF030A QXA-B141zF030A
Compressor Oil 68EP 68EP
Compressor Type Rotary Rotary
Compressor LRA. A 25 25
Compressor RLA A 7.2 7.2
Compressor Power Input W 1440 1440
Compressor Overload Protector 1NT11L-6233 or KSD115oC or
HPC115/95U1
1NT11L-6233 or KSD115oC or
HPC115/95U1
Throttling Method Capillary Capillary
Set Temperature Range ºC 16~30 16~30
Cooling Operation Ambient Temperature
Range ºC -15~43 -15~43
Heating Operation Ambient Temperature
Range ºC -15~24 -20~24
Condenser Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Condenser Pipe Diameter mm Φ7 Φ7
Condenser Rows-n Gap mm 2-1.4 2-1.4
Condenser Coil Length (LXDXW) mm 984X38.1X748 984X38.1X748
Fan Motor Speed rpm 800 800
Fan Motor Power Output W 90 90
Fan Motor RLA A / /
Fan Motor Capacitor μF / /
Outdoor Unit Air Flow Volume m3/h 4000 4000
Fan Type Axial-ow Axial-ow
Fan Diameter mm Φ552 Φ552
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) 58/-/- 58/-/-
Sound Power Level (H/M/L) dB (A) 68/-/- 68/-/-
Dimension(WXHXD) mm 1000X790X427 1000X790X427
Dimension of Carton Box (LXWXH) mm 1080X485X840 1080X485X840
Dimension of Package(LXWXH) mm 1083X488X855 1083X488X855
Net Weight kg 55.5 55.5
Gross Weight kg 60.5 60.5
Refrigerant R410A R410A
Refrigerant Charge kg 1.80 1.80
Connection
Pipe
Connection Pipe Length m 5 5
Connection Pipe Gas Additional Charge g/m 50 50
Outer Diameter Liquid Pipe mm Φ6 Φ6
Outer Diameter Gas Pipe mm Φ16 Φ16
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.

6Technical Information
Service Manual
2.2 Operation Characteristic Curve
2.3 Capacity Variation Ratio According to Temperature
0 10 20 30 40 50 60 70 90 0 10 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 ( t n e r r u C
11
10
9
8
7
6
5
4
3
2
1
0
Compressor speed (rps)
) A ( t n e r r u C
220V
230V
240V
220V
230V
240V
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
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
0 5 7 10
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
0 5 7 10
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
10750-5-10-15-20
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

7
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 73
24K 80
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)
20/15 7/6 18K 2.2 to 2.4 70 to 35 2 to 4 Super High High 75
24K 78
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
24K
18K
40
42
44
46
48
50
52
54
56
20 4030 50 60 70 80 90
Noise dB(A)
18&24K Cooling
18&24K Heating