Gree GMV6 DC Inverter VRF Units Service Manual
2.94 "J3" Compressor 3 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:
"J3" Compressor 3
Over-current Protection
The compressor is
abnormal
Yes
Yes
Replace the compressor
No
Replace the drive modu le
If the h igh pressu re valu e o f th e u nit
is still above 60°C when the compre ssor runs at the lowest
frequen cy, the compressor may ha ve enabled normal over-current
protection. In this case, check whether th e fan operates properly and
whether the ambient temperature is normal and wheth er the
power supply is normal (320V-460V)
Power on aga in
the units based on the capa city
and nu mber o f indoor u nits enabled
previou sly in the case of
protection state
Whether the drive modu le is normal?
Yes
Yes
Is th e p rotection still occurring
after power-on?
Yes
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