Gree GWHD(14)NK6OO(LC)(LH) User manual

Service Manual
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GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI

Service Manual
Table of Contents
Table of Contents
Part I : Technical Information..........................................................1
1. Summary...............................................................................................................1
2. Specications ................................................................................................2
3. Outline Dimension Diagram.....................................................30
4. Refrigerant System Diagram ..................................................32
5. Electrical Part...............................................................................................36
5.1 Wiring Diagram .......................................................................................................36
5.2 PCB Printed Diagram............................................................................................40
6. Function and Control ........................................................................43
Part II : Installation and Maintenance................................45
7. Notes for Installation and Maintenance..................45
8. Installation ........................................................................................................50
8.1 Electrical Connections .........................................................................................51
8.2 Installing the Outdoor Unit .................................................................................53
8.3 Installation Dimension Diagram........................................................................54
8.4 Check after Installation ........................................................................................55
9. Maintenance...................................................................................................56
9.1 Precautions before Performing Inspection or Repair ...............................56
9.2 Flashing LED of Indoor/Outdoor Unit and Primary Judgement...........57
9.3 Malfunction Checking and Elimination ..........................................................58
9.4 Troubleshooting for Normal Malfunction ......................................................70
10. Exploded View and Parts List............................................72
11. Removal Procedure..........................................................................80
Appendix ..................................................................................................................104
Appendix 1: Reference Sheet of Celsius and Fahrenheit.............................104
Appendix 2: Pipe Expanding Method...................................................................105
Appendix 3: List of Resistance for Temperature Sensor..............................106

1
Technical Information
Service Manual
Outdoor Unit:
1. Summary
GWHD(14)NK6OO(LC)(LH) GWHD(14)NK6OO(LC)
GWHD(18)NK6OO(LC)(LH) GWHD(18)NK6OO(LC)
GWHD(36)NK6OO(LC)(LH) GWHD(36)NK6OO(LC)
GWHD(42)NK6OO(LC)(LH) GWHD(42)NK6OO(LC)
Model list:
No Model Product code
1 GWHD(14)NK6OO(LC)(LH) CB228W14300
2 GWHD(14)NK6OO(LC) CB228W14301
3 GWHD(18)NK6OO(LC)(LH) CB228W14500
4 GWHD(18)NK6OO(LC) CB228W14501
5 GWHD(21)NK6OO(LC)(LH) CB228W14400
6 GWHD(21)NK6OO(LC) CB228W14401
7 GWHD(24)NK6OO(LC)(LH) CB228W14600
8 GWHD(24)NK6OO(LC) CB228W14601
9 GWHD(28)NK6OO(LC)(LH) CB228W14800
10 GWHD(28)NK6OO(LC) CB228W14801
11 GWHD(36)NK6OO(LC)(LH) CB228W14700
12 GWHD(36)NK6OO(LC) CB228W14701
13 GWHD(42)NK6OO(LC)(LH) CB228W14900
14 GWHD(42)NK6OO(LC) CB228W14901
GWHD(21)NK6OO(LC)(LH) GWHD(21)NK6OO(LC)
GWHD(24)NK6OO(LC)(LH) GWHD(24)NK6OO(LC)
GWHD(28)NK6OO(LC)(LH) GWHD(28)NK6OO(LC)

2Technical Information
Service Manual
2. Specications
Model GWHD(14)NK6OO(LC)(LH)
Product Code CB228W14300
Power
Supply
Rated Voltage V~ 220-240
Rated Frequency Hz 50
Phases 1
Cooling Capacity W 4.1
Heating Capacity W 4.4
Cooling Power Input W 1.1
Heating Power Input W 0.97
Cooling Current Input A 4.88
Heating Current Input A 4.44
Rated Power Input W 2.25
Rated Current A 10
EER W/W 3.73
COP W/W 4.54
Outdoor
Unit
Compressor Trademark ZHUHAI LANDA COMPRESSOR CO.,LTD
Compressor Model QXF-A120zH170A
Compressor Refrigerant Oil Type FW68DA
Compressor Type Inverter Rotary
L.R.A A 25
Compressor Rated Load Amp (RLA) A /
Compressor Power Input W 1096
Compressor Thermal Protector KSD115°C HPC115/95U1
Throttling Method Electron expansion valve
Cooling Operation Ambient Temperature Range oC -15~43
Heating Operation Ambient Temperature Range oC -22~24
Condenser Material Aluminum Fin-copper Tube
Condenser Pipe Diameter mm Φ7.94
Rows-Fin Gap(mm) mm 1-1.2
Coil length (L) X Height (H) X Coil width (W) mm 834×528×19.05
Fan Motor Speed (rpm) (H/M/L) rpm Cooling: 800 / Heating: 860
Output of Fan Motor W 30
Fan Motor RLA A 0.4
Fan Motor Capacitor μF /
Air Flow Volume of Outdoor Unit m3/h 2300
Fan Type-Piece Axial-ow
Fan Diameter-Height mm 420-131.1
Defrosting Method Automatic Defrosting
Climate Type T1
Isolation I
Moisture Protection IPX4
Permissible Excessive Operating Pressure for the Discharge Side MPa 4.3
Permissible Excessive Operating Pressure for the Suction Side MPa 2.5
Dimension (WXDXH) mm 822×352×550
Dimension of Carton Box (LXWXH) mm 869×395×594
Dimension of Package (LXWXH) mm 872×398×620
Net Weight kg 30
Gross Weight kg 32.5
Refrigerant R32
Refrigerant Charge kg 0.75

3
Technical Information
Service Manual
2. Specications
Outdoor
Unit
Cross-sectional Area of Power Cable Conductor mm21.5
Recommended Power Cable(Core) N 3
Connection Pipe Connection Method Flare Connection
Not Additional Gas Connection Pipe Length m 10
Connection Pipe Gas Additional Charge g/m 20
Outer Diameter of Liquid Pipe1 inch 1/4
Outer Diameter of Gas Pipe1 inch 3/8
Outer Diameter of Liquid Pipe2 inch 1/4
Outer Diameter of Gas Pipe2 inch 3/8
Outer Diameter of Liquid Pipe3 inch /
Outer Diameter of Gas Pipe3 inch /
Outer Diameter of Liquid Pipe4 inch /
Outer Diameter of Gas Pipe4 inch /
Outer Diameter of Liquid Pipe5 inch /
Outer Diameter of Gas Pipe5 inch /
Connection Pipe Max. Height Distance (Indoor and Indoor) m 15
Max. equivalent connection pipe length m 20
Connection Pipe Max. Length Distance (total length) m 40
The above data is subject to change without notice; please refer to the nameplate of the unit.

4Technical Information
Service Manual
2. Specications
Model GWHD(14)NK6OO(LC)
Product Code CB228W14301
Power
Supply
Rated Voltage V~ 220-240
Rated Frequency Hz 50
Phases 1
Cooling Capacity W 4.1
Heating Capacity W 4.4
Cooling Power Input W 1.1
Heating Power Input W 0.97
Cooling Current Input A 4.88
Heating Current Input A 4.44
Rated Power Input W 2.25
Rated Current A 10
EER W/W 3.73
COP W/W 4.54
Outdoor
Unit
Compressor Trademark ZHUHAI LANDA COMPRESSOR CO.,LTD
Compressor Model QXF-A120zH170A
Compressor Refrigerant Oil Type FW68DA
Compressor Type Inverter Rotary
L.R.A A 25
Compressor Rated Load Amp (RLA) A /
Compressor Power Input W 1096
Compressor Thermal Protector KSD115°C HPC115/95U1
Throttling Method Electron expansion valve
Cooling Operation Ambient Temperature Range oC -15~43
Heating Operation Ambient Temperature Range oC -15~24
Condenser Material Aluminum Fin-copper Tube
Condenser Pipe Diameter mm Φ7.94
Rows-Fin Gap(mm) mm 1-1.2
Coil length (L) X Height (H) X Coil width (W) mm 834×528×19.05
Fan Motor Speed (rpm) (H/M/L) rpm Cooling: 800 / Heating: 860
Output of Fan Motor W 30
Fan Motor RLA A 0.4
Fan Motor Capacitor μF /
Air Flow Volume of Outdoor Unit m3/h 2300
Fan Type-Piece Axial-ow
Fan Diameter-Height mm 420-131.1
Defrosting Method Automatic Defrosting
Climate Type T1
Isolation I
Moisture Protection IPX4
Permissible Excessive Operating Pressure for the Discharge Side MPa 4.3
Permissible Excessive Operating Pressure for the Suction Side MPa 2.5
Dimension (WXDXH) mm 822×352×550
Dimension of Carton Box (LXWXH) mm 869×395×594
Dimension of Package (LXWXH) mm 872×398×620
Net Weight kg 30
Gross Weight kg 32.5
Refrigerant R32
Refrigerant Charge kg 0.75

5
Technical Information
Service Manual
Outdoor
Unit
Cross-sectional Area of Power Cable Conductor mm21.5
Recommended Power Cable(Core) N 3
Connection Pipe Connection Method Flare Connection
Not Additional Gas Connection Pipe Length m 10
Connection Pipe Gas Additional Charge g/m 20
Outer Diameter of Liquid Pipe1 inch 1/4
Outer Diameter of Gas Pipe1 inch 3/8
Outer Diameter of Liquid Pipe2 inch 1/4
Outer Diameter of Gas Pipe2 inch 3/8
Outer Diameter of Liquid Pipe3 inch /
Outer Diameter of Gas Pipe3 inch /
Outer Diameter of Liquid Pipe4 inch /
Outer Diameter of Gas Pipe4 inch /
Outer Diameter of Liquid Pipe5 inch /
Outer Diameter of Gas Pipe5 inch /
Connection Pipe Max. Height Distance (Indoor and Indoor) m 15
Max. equivalent connection pipe length m 20
Connection Pipe Max. Length Distance (total length) m 40
The above data is subject to change without notice; please refer to the nameplate of the unit.
2. Specications

6Technical Information
Service Manual
2. Specications
Model GWHD(18)NK6OO(LC)(LH)
Product Code CB228W14500
Power
Supply
Rated Voltage V~ 220-240
Rated Frequency Hz 50
Phases 1
Cooling Capacity W 5.3
Heating Capacity W 5.65
Cooling Power Input W 1.48
Heating Power Input W 1.25
Cooling Current Input A 6.56
Heating Current Input A 5.55
Rated Power Input W 2.5
Rated Current A 11
EER W/W 3.58
COP W/W 4.52
Outdoor
Unit
Compressor Trademark ZHUHAI LANDA COMPRESSOR CO.,LTD
Compressor Model QXF-A139zH170A
Compressor Refrigerant Oil Type FW68DA
Compressor Type Inverter Rotary
L.R.A A 25
Compressor Rated Load Amp (RLA) A /
Compressor Power Input W 1295
Compressor Thermal Protector KSD115°C HPC115/95U1
Throttling Method Electron expansion valve
Cooling Operation Ambient Temperature Range oC -15~43
Heating Operation Ambient Temperature Range oC -22~24
Condenser Material Aluminum Fin-copper Tube
Condenser Pipe Diameter mm Φ7
Rows-Fin Gap(mm) mm 2-1.4
Coil length (L) X Height (H) X Coil width (W) mm 834×528×38.1
Fan Motor Speed (rpm) (H/M/L) rpm Cooling: 800 / Heating: 860
Output of Fan Motor W 30
Fan Motor RLA A 0.4
Fan Motor Capacitor μF /
Air Flow Volume of Outdoor Unit m3/h 2300
Fan Type-Piece Axial-ow
Fan Diameter-Height mm 420-131.1
Defrosting Method Automatic Defrosting
Climate Type T1
Isolation I
Moisture Protection IPX4
Permissible Excessive Operating Pressure for the Discharge Side MPa 4.3
Permissible Excessive Operating Pressure for the Suction Side MPa 2.5
Dimension (WXDXH) mm 822×352×550
Dimension of Carton Box (LXWXH) mm 869×395×594
Dimension of Package (LXWXH) mm 872×398×620
Net Weight kg 32
Gross Weight kg 34.5
Refrigerant R32
Refrigerant Charge kg 0.9

7
Technical Information
Service Manual
Outdoor
Unit
Cross-sectional Area of Power Cable Conductor mm21.5
Recommended Power Cable(Core) N 3
Connection Pipe Connection Method Flare Connection
Not Additional Gas Connection Pipe Length m 10
Connection Pipe Gas Additional Charge g/m 20
Outer Diameter of Liquid Pipe1 inch 1/4
Outer Diameter of Gas Pipe1 inch 3/8
Outer Diameter of Liquid Pipe2 inch 1/4
Outer Diameter of Gas Pipe2 inch 3/8
Outer Diameter of Liquid Pipe3 inch /
Outer Diameter of Gas Pipe3 inch /
Outer Diameter of Liquid Pipe4 inch /
Outer Diameter of Gas Pipe4 inch /
Outer Diameter of Liquid Pipe5 inch /
Outer Diameter of Gas Pipe5 inch /
Connection Pipe Max. Height Distance (Indoor and Indoor) m 15
Max. equivalent connection pipe length m 20
Connection Pipe Max. Length Distance (total length) m 40
The above data is subject to change without notice; please refer to the nameplate of the unit.
2. Specications

8Technical Information
Service Manual
2. Specications
Model GWHD(18)NK6OO(LC)
Product Code CB228W14501
Power
Supply
Rated Voltage V~ 220-240
Rated Frequency Hz 50
Phases 1
Cooling Capacity W 5.3
Heating Capacity W 5.65
Cooling Power Input W 1.48
Heating Power Input W 1.25
Cooling Current Input A 6.56
Heating Current Input A 5.55
Rated Power Input W 2.5
Rated Current A 11
EER W/W 3.58
COP W/W 4.52
Outdoor
Unit
Compressor Trademark ZHUHAI LANDA COMPRESSOR CO.,LTD
Compressor Model QXF-A139zH170A
Compressor Refrigerant Oil Type FW68DA
Compressor Type Inverter Rotary
L.R.A A 25
Compressor Rated Load Amp (RLA) A /
Compressor Power Input W 1295
Compressor Thermal Protector KSD115°C HPC115/95U1
Throttling Method Electron expansion valve
Cooling Operation Ambient Temperature Range oC -15~43
Heating Operation Ambient Temperature Range oC -15~24
Condenser Material Aluminum Fin-copper Tube
Condenser Pipe Diameter mm Φ7
Rows-Fin Gap(mm) mm 2-1.4
Coil length (L) X Height (H) X Coil width (W) mm 834×528×38.1
Fan Motor Speed (rpm) (H/M/L) rpm Cooling: 800 / Heating: 860
Output of Fan Motor W 30
Fan Motor RLA A 0.4
Fan Motor Capacitor μF /
Air Flow Volume of Outdoor Unit m3/h 2300
Fan Type-Piece Axial-ow
Fan Diameter-Height mm 420-131.1
Defrosting Method Automatic Defrosting
Climate Type T1
Isolation I
Moisture Protection IPX4
Permissible Excessive Operating Pressure for the Discharge Side MPa 4.3
Permissible Excessive Operating Pressure for the Suction Side MPa 2.5
Dimension (WXDXH) mm 822×352×550
Dimension of Carton Box (LXWXH) mm 869×395×594
Dimension of Package (LXWXH) mm 872×398×620
Net Weight kg 32
Gross Weight kg 34.5
Refrigerant R32
Refrigerant Charge kg 0.9