Gree GMV-VQ680WM/C-X Service Manual page 175

Gree
2.111 "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:
is still a bove 60°C when the compre ssor runs at the lowest
frequen cy, the compre ssor may ha ve ena bled normal over-current
protection. In this case, check whether th e fan oper ate s prop erly an d
whether th e a mb ient temperature is n ormal and wh eth er the
"J3" Compressor 3
Over-current Protection
Power on aga in
the units based on th e capa city
and nu mb er o f indoo r u nits enable d
previou sly in the case o f
protection state
Yes
If th e h igh pressu re valu e o f th e u nit
power supply is normal (320V-460V)
Yes
Whether th e d rive modu le i s normal?
Yes
Is th e p rotection still occurring
afte r po we r-on?
Yes
The co mpr essor is
abn ormal
GMV6 HR DC Inverter VRF Units Service Manual
No
Yes
Replace th e compre ssor
173
Replace th e d rive modu le