Midea M2OC1-18HRDN1-Q

8.3.2.11 PFC module protection
8.3.2.12 Inverter compressor drive protection
The trouble shooting is same with one of IPM module protection
PFC module protection
Check whether the connecting line between main
board and the PFC module is connected tightly
No
Connect it tightly, check normal or not
Yes
Check whether the voltage between P
and N of IPM module is 380-390VDC
No
Yes
Replace the outdoor main board
No
Replace the PFC module
Yes
Check whether the inductance of PFC module is
good?
Replace the inductance
No