Midea MS11M-09HRFN1-BW0W Service Manual page 46

9.3.9 High temperature protection of IPM module diagnosis and solution(P2)
Error Code
Malfunction decision
conditions
Supposed causes
Trouble shooting:
Check if the fastening screws
Check if the fastening screws
on the PCB and IPM radiator
on the PCB and IPM radiator
are fixed tightly.
are fixed tightly.
No
Tighten the screws and apply
Tighten the screws and apply
silicon grease.
silicon grease.
P2
If the sampling voltage is not 5V, the LED will display the failure.
PCB faulty
●
Replace the outdoor control PCB.
Replace the outdoor control PCB.
Yes
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