Gree GWH18RC-K3DNA5G User manual

GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI
Change for Life
Service Manual
GWH18RC-K3DNA5G
GWH24RD-K3DNA5G
(Refrigerant:R410A)
Models:

Service Manual
Table of Contents
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 ........................................................................................4
2.3 Capacity Variation Ratio According to Temperature .........................................................4
2.4 Cooling and Heating Data Sheet in Rated Frequency .....................................................5
2.5 Noise Curve ......................................................................................................................5
3. Outline Dimension Diagram ........................................................................6
3.1 Indoor Unit ........................................................................................................................6
3.2 Outdoor Unit .....................................................................................................................7
4. Refrigerant System Diagram ......................................................................8
5. Electrical Part...........................................................................................................9
5.1 Wiring Diagram .................................................................................................................9
5.2 PCB Printed Diagram .....................................................................................................11
6. Function and Control ......................................................................................13
6.1 Remote Controller Introduction .....................................................................................13
6.2 Brief Description of Modes and Functions ......................................................................17
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

Table of Contents
Service Manual
Table of Contents 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 .................................................................................................................60
11. Removal Procedure .......................................................................................64
11.1 Removal Procedure of Indoor Unit ...............................................................................64
11.2 Removal Procedure of Outdoor Unit ............................................................................69
Appendix: ........................................................................................................................80
Appendix 1: Reference Sheet of Celsius and Fahrenheit ....................................................80
Appendix 2: Conguration of Connection Pipe .....................................................................80
Appendix 3: Pipe Expanding Method ...................................................................................81
Appendix 4: List of Resistance for Temperature Sensor ......................................................82

1
Technical Information
Service Manual
1. Summary
Part Ⅰ: Technical Information
Indoor Unit
GWH18RC-K3DNA5G/I
GWH24RD-K3DNA5G/I
Outdoor Unit
GWH18MC-K3DNE3G/O
GWH24MD-K3DNE3G/O
Remote Controller
YT1F(MOTO)
FAN
MODE
IF E EL
CLOCK TIMER
ON
X-FAN TEMP TIMER
OFF
TURBO SLEEP LIG HT

2Technical Information
Service Manual
Model GWH18RC-K3DNA5G GWH24RD-K3DNA5G
Product Code CB304002501 CB304002801
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(1260~6600) 6450(2530~6800)
Heating Capacity(Min~Max) W 5800(1120~6800) 7000(2530~7600)
Cooling Power Input(Min~Max) W 1625(380~2650) 2180(600~2650)
Heating Power Input(Min~Max) W 1760(350~2650) 2220(600~2800)
Cooling Power Current A 7.2 9.7
Heating Power Current A 7.8 9.8
Rated Input W 2650 2800
Rated Current A 11.8 12.4
Air Flow Volume(SH/H/M/L/SL) m3/h 850/780/650/550/- 1000/800/700/550/-
Dehumidifying Volume L/h 1.80 2
EER W/W 3.25 2.96
COP W/W 3.30 3.15
SEER W/W 6.1 6.1
HSPF W/W / /
Application Area m223-34 27-42
Indoor
Unit
Model of Indoor Unit GWH18RC-K3DNA5G/I GWH24RD-K3DNA5G/I
Product Code of Indoor Unit CB304N02500 CB304N02800
Fan Type Cross-ow Cross-ow
Diameter Length(DXL) mm Φ98X710 Φ100X765
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 μF 1.5 2.5
Evaporator Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter mm Φ7 Φ7
Row-n Gap 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 2.5
Fuse A 3.15 3.15
Sound Pressure Level (SH/H/M/L/SL) dB (A) 48/43/40/35/- 51/47/42/39/-
Sound Power Level (SH/H/M/L/SL) dB (A) 58/53/50/45/- 61/57/52/49/-
Dimension (WXHXD) mm 945X298X211 1018X315X230
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
2. Specications
2.1 Specication Sheet

3
Technical Information
Service Manual
The above data is subject to change without notice; please refer to the nameplate of the unit.
Outdoor Unit
Model of Outdoor Unit GWH18MC-K3DNE3G/O GWH24MD-K3DNE3G/O
Product Code of Outdoor Unit CB404W03401 CB404W03801
Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR
CO.,LTD
ZHUHAI LANDA COMPRESSOR
CO.,LTD
Compressor Model QXA-B141zF030A QXA-B141zF030A
Compressor Oil 68EP 68EP
Compressor Type Rotary Rotary
L.R.A. A 25 25
Compressor RLA A 7.2 7.2
Compressor Power Input W 1440 1440
Overload Protector 1NT11L-6233 or KSD115oC or
HPC115/95U1
1NT11L-6233 or KSD115oC or
HPC115/95U1
Throttling Method Capillary Capillary
Operation temp oC 16~30 16~30
Ambient temp (cooling) oC -15~43 -15~43
Ambient temp (heating) oC -20~24 -20~24
Condenser Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter mm Φ7 Φ7
Rows-n Gap mm 2-1.4 2-1.4
Coil Length (LXDXW) mm 851X38.1X660 984X38.1X748
Fan Motor Speed rpm 750 800
Output of Fan Motor W 60 90
Fan Motor RLA A / /
Fan Motor Capacitor μF / /
Air Flow Volume of Outdoor Unit m3/h 3200 4000
Fan Type Axial-ow Axial-ow
Fan Diameter mm Φ520 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) 56/-/- 58/-/-
Sound Power Level (H/M/L) dB (A) 66/-/- 68/-/-
Dimension (WXHXD) mm 963X700X396 1000X790X427
Dimension of Carton Box (LXWXH) mm 1026X455X735 1080X485X840
Dimension of Package (LXWXH) mm 1029X458X750 1083X488X855
Net Weight kg 45 55
Gross Weight kg 49.5 60
Refrigerant R410A R410A
Refrigerant Charge kg 1.35 1.80
Connection
Pipe
Length m 5 5
Gas Additional Charge g/m 20 50
Outer Diameter Liquid Pipe mm Φ6 Φ6
Outer Diameter Gas Pipe mm Φ12 Φ16
Max Distance Height m 10 10
Max Distance Length m 25 25
Note: The connection pipe applies metric diameter.

4Technical 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 (%)
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

5
Technical Information
Service Manual
2.4 Cooling and Heating Data Sheet in Rated Frequency
Rated cooling
condition(oC)
(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 (oC) T2 (oC)
27/19 35/24
18K 0.8 to 1.0 12 to 14 80 to 40 Super High High 70
24K 0.9 to 1.1 10 to 12 80 to 40 Super High High 83
Rated heating
condition(oC)
(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 (oC) T2 (oC)
20/15 7/6
18K 2.2 to 2.4 70 to 40 1 to 5 Super High High 70
24K 2.5 to 2.7 70 to 40 1 to 5 Super High High 75
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
20
30
40
50
60
20 0 40 60 80 100
Outdoor side noise
Indoor side noise
Compressor frequency/Hz
) A ( B d / e s i o N
18K 24K 18K 24K
60
50
40
30
20
10
0
Indoor Fan Motor Rotating Speed
Noice/dB(A)
low Middle High Super High

6Technical Information
Service Manual
3. Outline Dimension Diagram
3.1 Indoor Unit
Unit:mm
Models W H D
18K 945 298 211
24K 1018 315 230
W
694
685 189144
57
38 116
45
45
60
95
Φ55Φ55
Φ70 Φ70
194
D
H

7
Technical Information
Service Manual
3.2 Outdoor Unit
Unit:mm
24K
18K
963
892
700
396
341
368
560
427 1000
920
610
370
790
395