Midea ESG-Inv M Series - C7 High Temperature Protection of Inverter Module

ESG-Inv M
36
Midea ESG-Inv M Series Pool Heat Pump Manual
5.5 C7 Troubleshooting
Digital display output
Procedure
C7: High temperature protection of
inverter module
Power supply voltage is too high or too
low
Yes
Adjust the power supply and make sure
the power supply is stable
No
Poor ventilation at installation position
Yes
Install the heat pump in the place with
good ventilation.
No
Fin coil heat exchanger is filth blockage
Yes
Clean the fin coil heat exchanger.
No
Fan motor damage or abnormal speed
Yes
Refer to H6 trouble shooting.
No
The location of heat pump is near the
place where temperature is too high
Make sure heat pump is away from high
temperature heat source.
No
Replace inverter module PCB
Protection logic
Note:
1. Tf means inverter module PCB temperature, which is detected by the inverter module PCB itself.
Normal operation
Tf > 76℃
Tf < 66℃
Error code C7
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