Gree GMV6 DC Inverter VRF Units Service Manual
2.178 No Faults Displayed But Compressor Not Starting in
Cooling/Heating Mode
Error display:
no error displayed but compressor not starting in cooling / heating mode
Applicable model: all ODUs
Error judgment condition and method:
Under shutdown status, the high pressure sensor has detected that the high pressure of the module
is 55
℃
or higher, or the discharge temperature sensor / shell top temperature sensor has detected that the
temperature is 105
℃
or higher.
Possible reasons:
■The ambient temperature is 55℃ or higher;
■The temperature of the compressor is 105℃ or higher;
■High pressure sensor is abnormal;
■Temperature sensor is abnormal;
Troubleshooting:
Step 1: confirm the ambient temperature is below 55℃, otherwise the compressor cannot start;
Step 2: detect the temperature of the compressor, if the temperature is over 104℃, the compressor cannot
start;
Step 3: if the above inspections are normal, connect the multi-functional debugger;
Step 4: if the high pressure of the module is 55 or higher, replace the high pressure sensor;
Step 5: if the discharge temperature / shell top temperature of the compressor is 105 or higher, replace the
temperature sensor.
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