Gree GMV6 DC Inverter VRF Units Service Manual
2.91 "J0" Protection for Other Modules
Fault display: main board of outdoor unit displays while the indoor unit and receiver of
indoor unit do not.
Applicable models: GMV6, GMV5, GMV5S, TOPS, GMV water Series
Fault diagnosis:
In a multi-module system, the fault of any module will cause any other properly operating modules
to display the fault code. It indicates that some other module has a fault, thereby causing the shutdown
of the unit to ensure safe operation.
Possible causes:
■ Other modules have faults, thereby causing the unit to stop operation.
Troubleshooting:
Troubleshoot other modules.
2.92 "J1" Compressor 1 Over-current Protection
Fault display: main board of outdoor unit, wired controller of indoor unit and receiver of indoor unit
display
Fault diagnosis:
When the operating current of the compressor detected by the current sensor or circuit exceeds the
limit, the unit will stop working.
Possible causes:
■ The unit's parameters are abnormal;
■ The drive module is abnormal;
■ The compressor is abnormal.
Troubleshooting:
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