Gree GMV-560WM/G-X

Gree GMV6 DC Inverter VRF Units Service Manual
181
2.149 No Faults Displayed But Compressor Not Starting in
Cooling/Heating Mode
Fault:
no faults displayed but compressor not starting in cooling/heating mode
Fault diagnosis:
Commission the multi-functional debugger. If any high pressure/discharge
temperature/shell roof temperature of the unit falls within the following range before the unit starts
operation, replace the corresponding components.
Possible causes:
1) The pressure sensor fails to work properly [55, 64)
2) The discharge temperature sensor/shell roof temperature sensor fails to work properly [105, 118)
Troubleshooting:
Check which module does not start
No
s
The unit does not start and
there is
no fault code
displayed
Connect the
commissioning the
multi-functional
debugger
Confirm that the
high pressure of the
module is within the
range of [55, 64)
Replace the
pressure sensor
Replace the
temperature sensor
No
Yes
Yes
Confirm that the discharge
temperature/shell roof
temperature of the
compressor is within the
range of [105, 118)