Midea MCH2U-18PHH2

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8.4.2.10 P3 (Current overload protection) diagnosis and solution.
Error Code
P3
Malfunction conditions
If the outdoor current exceeds the current limit value, the LED
will display the failure.
Potential causes
● Wiring mistake
● Faulty over load protector
● System block
● Faulty outdoor PCB
Trouble shooting: