Midea MEHS-09PSH1 Service Manual page 49

9.3.9 High temperature protection of IPM module or compressor top diagnosis and solution(P2)
Error Code
Malfunction decision
conditions
Supposed causes
Trouble shooting:
For MEHSU-09PHH2, MEHSU-12PHH2, MEHSU-18PHH2,
For other models,
P2
If the sampling voltage is not 5V, the LED will display the failure.
Installation mistake
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Power supply problems.
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System leakage or block
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PCB faulty
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