Gree GMV6 DC Inverter VRF Units Service Manual
2.93 "J2" Compressor 2 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:
"J2" Compressor 2
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
the unit is still above 60°C when the compressor
runs at the lowest fre quency, the compre ssor may have enabled
normal over-current protection. In this case, check whether th e fan
operates prop erly an d whether the ambient temper atu re i s normal
and whether the power sup ply is normal
(320V-460V)
Power on aga in the units
based on the cap aci ty a nd number of
indoor units enab led previously 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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