GREE ELECTRIC GWHDND3EO User manual

GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI
Change for Life
Service Manual
Models: GWHD(18)ND3EO
GWHD(18)ND3FO
GWHD(24)ND3EO
GWHD(24)ND3FO
GWHD(18)ND3GO
GWHD(24)ND3GO
(Refrigerant R410A)

Service Manual
Table of Contents
Table of Contents
Part Ⅰ: Technical Information.......................................................................1
1. Summary......................................................................................................................1
2. Specications..........................................................................................................2
3. Outline Dimension Diagram......................................................................10
4. Refrigerant System Diagram....................................................................11
5. Electrical Part.........................................................................................................12
5.1 Wiring Diagram...............................................................................................................12
5.2 PCB Printed Diagram .....................................................................................................14
6. Function and Control......................................................................................16
Part Ⅱ: Installation and Maintenance .................................................19
7. Notes for Installation and Maintenance..........................................19
8. Installation Manual............................................................................................21
8.1 Electrical Connections....................................................................................................22
8.2 Installing the Outdoor Unit..............................................................................................23
8.3 Installation Dimension Diagram......................................................................................24
8.4 Check after Installation...................................................................................................25
9. Troubleshooting ..................................................................................................26
9.1 Flashing LED of Indoor/Outdoor Unit and Primary Judgement .....................................26
9.2 Malfunction Checking and Elimination ...........................................................................27
9.3 Maintenance Method for Normal Malfunction.................................................................40
10. Exploded View and Parts List ..............................................................42
11. Removal Procedure.......................................................................................48
Appendix:........................................................................................................................61
Appendix 1: Reference Sheet of Celsius and Fahrenheit ....................................................61
Appendix 2: Conguration of Connection Pipe.....................................................................61
Appendix 3: Pipe expanding method....................................................................................62
Appendix 4: List of Resistance for Temperature Sensor ......................................................63

1
Technical Information
Service Manual
1. Summary
Part Ⅰ: Technical Information
Outdoor Unit
GWHD(18)ND3EO
GWHD(18)ND3FO
GWHD(18)ND3GO
GWHD(24)ND3EO
GWHD(24)ND3FO
GWHD(24)ND3GO

2Technical Information
Service Manual
2. Specications
Model 1.GWHD(18)ND3EO
2.GWHD(18)ND3FO
Product Code 1.CB228W04100
2.CB228W07600
Power
supply
Rated Voltage V~ 208/230
Rated Frequency Hz 60
Phases 1
Cooling capacity(max~min) W 5280(2051~6155)
Heating capacity(max~min) W 5570(2500~6624)
Cooling Power Input(max~min) W 1650
Heating Power Input(max~min) W 1640
Cooling Current Input A 10.67/10.56
Heating Current Input A 6.78/6.10
Rated Power Input W 2800
Rated Current A 12.48
EER W/W 3.2
COP W/W 3.4
Outdoor
Unit
Compressor Trademark ZHUHAI LANDA COMPRESSOR CO.,LTD
Compressor Model QXA-B141zF030A
Compressor Refrigerant Oil Type RB68EP
Compressor Type Inverter Rotary
L.R.A A 25
Compressor Rated Load Amp (RLA) A 10.82
Compressor Power Input W 1440
Compressor Thermal Protector 1NT11L-6233/KSD115℃/HPC115/95U1
Throttling Method Electron expansion valve
Cooling Operation Ambient Temperature
Range
OF -0.4~118.4
Heating Operation Ambient Temperature
Range
OF -4~75.2
Condenser Material Aluminum Fin-copper Tube
Condenser Pipe Diameter inch Φ9/32
Rows-Fin Gap(mm) inch 2-1/18
Coil length (l) X height (H) X coil width (L) inch 33 1/2X1 /12X26
Fan Motor Speed (rpm) (H/M/L) rpm 630
Output of Fan Motor W 60
Fan Motor RLA A 0.62
Fan Motor Capacitor μF /
Air Flow Volume of Outdoor Unit CFM 1883
Fan Type-Piece Axial-ow
Fan Diameter inch Φ20 1/2
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 (W/H/D) inch 38X27 9/16X15 39/64
Dimension of Package (L/W/H) inch 40 13/32X18X29
Dimension of Package(L/W/H) inch 40 1/2X18X29 1/2
Net Weight lb 114.7
Gross Weight lb 124.6
efrigerant Charge R410A
Refrigerant Charge oz 56.45

3
Technical Information
Service Manual
Outdoor
Unit
Cross-sectional Area of Power Cable Conductor sq in 0.0032
Recommended Power Cable(Core) N 3
Connection Pipe Connection Method Flare Connection
Not Additional Gas Connection Pipe Length ft 16.4
Connection Pipe Gas Additional Charge oz/ft. 0.2
Outer Diameter of Liquid Pipe1(GREE Allocation)
(Metric) inch 1/4
Outer Diameter of Liquid Pipe2(GREE Allocation)
(Metric) inch 1/4
Outer Diameter of Gas Pipe1(GREE Allocation)
(Metric) inch 3/8
Outer Diameter of Gas Pipe2(GREE Allocation)
(Metric) inch 3/8
Connection Pipe Max. Height Distance(indoor and
indoor) ft 32.8
Connection Pipe Max. Height Distance(indoor and
outdoor and indoor up) ft 32.8
Connection Pipe Max. Height Distance(indoor and
outdoor and outdoor up) ft 32.8
Max. equivalent connection pipe length(outdoor to
last indoor) ft 32.8
Connection Pipe Max. Length Distance(total lenght) ft 65.6
The above data is subject to change without notice; please refer to the nameplate of the unit.

4Technical Information
Service Manual
Model 1.GWHD(24)ND3EO
2.GWHD(24)ND3FO
Product Code 1.CB228W04200 CB228W04203
2.CB228W07500
Power
supply
Rated Voltage V~ 208/230
Rated Frequency Hz 60
Phases 1
Cooling capacity(max~min) W 7620(2198~9672)
Heating capacity(max~min) W 8500(2198~7500)
Cooling Power Input(max~min) W 2400
Heating Power Input(max~min) W 2350
Cooling Current Input A 10.65
Heating Current Input A 10.43
Rated Power Input W 4550
Rated Current A 20.19
EER W/W 3.0
COP W/W 3.5
Outdoor
Unit
Compressor Trademark ZHUHAI LANDA COMPRESSOR CO.,LTD
Compressor Model QXAS-D23zX090B
Compressor Refrigerant Oil Type RB68EP
Compressor Type Inverter Rotary
L.R.A A /
Compressor Rated Load Amp (RLA) A 17
Compressor Power Input W 2550
Compressor Thermal Protector 1NT11L-6233
Throttling Method Electron expansion valve
Cooling Operation Ambient Temperature Range OF -0.4~118.4
Heating Operation Ambient Temperature Range OF -4~75.2
Condenser Material Aluminum Fin-copper Tube
Condenser Pipe Diameter inch Φ2/7
Rows-Fin Gap(mm) inch 2-1/18
Coil length (l) X height (H) X coil width (L) inch 38 21/32X1 1/2X29 7/16
Fan Motor Speed (rpm) (H/M/L) rpm 800
Output of Fan Motor W 90
Fan Motor RLA A 0.59
Fan Motor Capacitor μF /
Air Flow Volume of Outdoor Unit CFM 2354
Fan Type-Piece Axial-ow
Fan Diameter inch Φ21 43/64-2 39/64
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 (W/H/D) inch 38 37/64X31 7/64X17 21/64
Dimension of Package (L/W/H) inch 42 1/2X19X33
Dimension of Package(L/W/H) inch 42 43/64X19 13/64X33 43/64
Net Weight lb 153.2
Gross Weight lb 164.3
efrigerant Charge R410A
Refrigerant Charge oz 77.6

5
Technical Information
Service Manual
Outdoor
Unit
Cross-sectional Area of Power Cable Conductor sq in 0.0051
Recommended Power Cable(Core) N 3
Connection Pipe Connection Method - Flare Connection
Not Additional Gas Connection Pipe Length ft 16.4
Connection Pipe Gas Additional Charge oz/ft. 0.2
Outer Diameter of Liquid Pipe1(GREE Allocation)
(Metric) inch 1/4
Outer Diameter of Liquid Pipe2(GREE Allocation)
(Metric) inch 1/4
Outer Diameter of Liquid Pipe2(GREE Allocation)
(Metric) inch 1/4
Outer Diameter of Gas Pipe1(GREE Allocation)
(Metric) inch 3/8
Outer Diameter of Gas Pipe2(GREE Allocation)
(Metric) inch 3/8
Outer Diameter of Gas Pipe2(GREE Allocation)
(Metric) inch 3/8
Connection Pipe Max. Height Distance(indoor and
indoor) ft 32.8
Connection Pipe Max. Height Distance(indoor and
outdoor and indoor up) ft 32.8
Connection Pipe Max. Height Distance(indoor and
outdoor and outdoor up) ft 32.8
Max. equivalent connection pipe length(outdoor to
last indoor) ft 65.6
Connection Pipe Max. Length Distance(total lenght) ft 196.8
The above data is subject to change without notice; please refer to the nameplate of the unit.

6Technical Information
Service Manual
Model GWHD(18)ND3GO
Product Code CB228W07700
Power
supply
Rated Voltage V~ 208/230
Rated Frequency Hz 60
Phases 1
Cooling capacity(max~min) Btu/h 18000(6155~6998)
Heating capacity(max~min) Btu/h 19000(8530~22600)
Cooling Power Input(max~min) W 1440
Heating Power Input(max~min) W 1520
Cooling Current Input A 6.26
Heating Current Input A 6.61
Rated Power Input W 2800
Rated Current A 12.42
EER (Btu/h)/W 12.5
COP (Btu/h)/W 12.5
Outdoor
Unit
Compressor Trademark ZHUHAI LANDA COMPRESSOR CO.,LTD
Compressor Model QXA-B141zF030A
Compressor Refrigerant Oil Type RB68EP
Compressor Type Inverter Rotary
L.R.A A /
Compressor Rated Load Amp (RLA) A 10.82
Compressor Power Input W 1440
Compressor Thermal Protector 1NT11L-6233
Throttling Method Electron expansion valve
Cooling Operation Ambient Temperature
Range
OF -0.4~118.4
Heating Operation Ambient Temperature
Range
OF -4~75.2
Condenser Material Aluminum Fin-copper Tube
Condenser Pipe Diameter inch Φ9/32
Rows-Fin Gap(mm) inch 2-1/18
Coil length (l) X height (H) X coil width (L) inch 33 1/2X1 /12X26
Fan Motor Speed (rpm) (H/M/L) rpm 630
Output of Fan Motor W 60
Fan Motor RLA A 0.62
Fan Motor Capacitor μF /
Air Flow Volume of Outdoor Unit CFM 1883
Fan Type-Piece Axial-ow
Fan Diameter inch Φ20 1/2
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 (W/H/D) inch 38X27 9/16X15 39/64
Dimension of Package (L/W/H) inch 40 13/32X18X29
Dimension of Package(L/W/H) inch 40 1/2X18X29 1/2
Net Weight lb 114.7
Gross Weight lb 124.6
efrigerant Charge R410A
Refrigerant Charge oz 56.45

7
Technical Information
Service Manual
Outdoor
Unit
Cross-sectional Area of Power Cable Conductor sq in 0.0032
Recommended Power Cable(Core) N 3
Connection Pipe Connection Method Flare Connection
Not Additional Gas Connection Pipe Length ft 32.8
Connection Pipe Gas Additional Charge oz/ft. 0.2
Outer Diameter of Liquid Pipe1(GREE Allocation)
(Metric) inch 1/4
Outer Diameter of Liquid Pipe2(GREE Allocation)
(Metric) inch 1/4
Outer Diameter of Gas Pipe1(GREE Allocation)
(Metric) inch 3/8
Outer Diameter of Gas Pipe2(GREE Allocation)
(Metric) inch 3/8
Connection Pipe Max. Height Distance(indoor and
indoor) ft 32.8
Connection Pipe Max. Height Distance(indoor and
outdoor and indoor up) ft 32.8
Connection Pipe Max. Height Distance(indoor and
outdoor and outdoor up) ft 32.8
Max. equivalent connection pipe length(outdoor to
last indoor) ft 32.8
Connection Pipe Max. Length Distance(total lenght) ft 65.6
The above data is subject to change without notice; please refer to the nameplate of the unit.

8Technical Information
Service Manual
Model GWHD(24)ND3GO
Product Code CB228W07800
Power
supply
Rated Voltage V~ 208/230
Rated Frequency Hz 60
Phases 1
Cooling capacity(max~min) Btu/h 24000(7500~33000)
Heating capacity(max~min) Btu/h 26000(7500~35000)
Cooling Power Input(max~min) W 1920
Heating Power Input(max~min) W 2050
Cooling Current Input A 8.35
Heating Current Input A 8.9
Rated Power Input W 4550
Rated Current A 20.19
EER (Btu/h)/W 12.5
COP (Btu/h)/W 12.7
Outdoor
Unit
Compressor Trademark ZHUHAI LANDA COMPRESSOR CO.,LTD
Compressor Model QXAS-D23zX090B
Compressor Refrigerant Oil Type RB68EP
Compressor Type Inverter Rotary
L.R.A A /
Compressor Rated Load Amp (RLA) A 15.82
Compressor Power Input W 2550
Compressor Thermal Protector 1NT11L-6233
Throttling Method Electron expansion valve
Cooling Operation Ambient Temperature Range OF -0.4~118.4
Heating Operation Ambient Temperature Range OF -4~75.2
Condenser Material Aluminum Fin-copper Tube
Condenser Pipe Diameter inch Φ2/7
Rows-Fin Gap(mm) inch 2-1/18
Coil length (l) X height (H) X coil width (L) inch 38 21/32X1 1/2X29 7/16
Fan Motor Speed (rpm) (H/M/L) rpm 800
Output of Fan Motor W 90
Fan Motor RLA A 0.59
Fan Motor Capacitor μF /
Air Flow Volume of Outdoor Unit CFM 2354
Fan Type-Piece Axial-ow
Fan Diameter inch Φ21 43/64-2 39/64
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 (W/H/D) inch 38 37/64X31 7/64X17 21/64
Dimension of Package (L/W/H) inch 42 1/2X19X33
Dimension of Package(L/W/H) inch 42 43/64X19 13/64X33 43/64
Net Weight lb 153.2
Gross Weight lb 164.3
efrigerant Charge R410A
Refrigerant Charge oz 77.6