Midea M4OC-36HRFN1-M - IPM Module; IGBT Over-Current Protection Diagnosis

9.4.1.6 IPM module or IGBT over-strong current protection diagnosis and solution.
Malfunction decision
conditions
When the voltage signal that IPM send to compressor drive
chip is abnormal, the display LED will show “P6” and AC will
turn off.
Supposed causes
● Wiring mistake
● IPM malfunction
● Outdoor fan ass’y faulty
● Compressor malfunction
● Outdoor PCB faulty
Trouble shooting: