Gree GWC12KF-K3DNA5A Service Manual

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Troubleshooting
9.4 How to simply check the main part
(1)Malfunction of power supply from indoor unit to outdoor unit
Main inspection point:
Inspect the power supply plug seat with AC voltage gauge to check if the voltage between L and N is within 200VAC~240VAC;
Check with AC voltage gauge if the voltage between N 1and 3 of indoor wiring block is within 200VAC~240VAC;
Flow chart of Malfunction diagnosis
Y
Y
N
N
Y
N
Energize the unit
and wait for 3min
Measure voltage between
N 1and 3 of indoor
wiring block
Voltage > 200V?
Measure voltage
between L and N
of outdoor wiring
block
Normal wiring?
Voltage > 200V?
Indoor main board error
Adjust wiring
Outdoor electric
box error
indoor and outdoor
wiring error
Replace main board
of indoor unit
Replace outdoor
electric box
Replace indoor
and outdoor wiring
Remove malfunction
(2) Indoor fan does not rotate and there is no feedback
Main detection point:
z
z
Malfunction diagnosis process:
Is the control panel reliably connected with the motor? Is it loose? Is the connecting sequence correct?
Is the input voltage within the normal range (measure the voltage between L and N of the wiring block XT with AC voltage
gauge.)?

Gree GWC12KF-K3DNA5A Specifications

General

Cooling Capacity	12000 BTU/h
Energy Efficiency Ratio (EER)	3.21
Power Supply	220-240V, 50Hz
Refrigerant	R410A
Refrigerant Type	R410A
Dimensions (Outdoor Unit)	776 x 540 x 320 mm
Type	Split System
Cooling Capacity (kW)	3.5 kW
Functions	Cooling, Heating, Dehumidification
Energy Efficiency Ratio (Cooling)	3.21 W/W
Coefficient of Performance (Heating)	3.62 W/W
Noise Level (Outdoor)	52 dB(A)
Operating Temperature (Cooling)	18°C to 43°C
Operating Temperature (Heating)	-7°C to 24°C
Power Input (Cooling)	1095 W