P0
Midea P0 Error Code – IGBT Over-Current Protection
Air Conditioner · CRITICAL Severity
What This Error Means
IGBT over-strong current protection activated
Diagnostic & Repair Steps
1
Power Off Immediately
Switch off AC at breaker immediately. P0 indicates IGBT over-current risk. ⚠️ Do not restart until cause is identified
Switch off AC at breaker immediately. P0 indicates IGBT over-current risk. ⚠️ Do not restart until cause is identified
RESET
~2 min
2
Inspect Outdoor PCB
Check outdoor PCB IGBT module for burn marks or physical damage. ⚠️ Disconnect power and wait 10 min for capacitors to discharge
Check outdoor PCB IGBT module for burn marks or physical damage. ⚠️ Disconnect power and wait 10 min for capacitors to discharge
INSPECT
~15 min
3
Check Refrigerant Charge
Incorrect refrigerant charge can cause compressor overcurrent. Check system pressures. ⚠️ Only certified technicians should handle refrigerant
Incorrect refrigerant charge can cause compressor overcurrent. Check system pressures. ⚠️ Only certified technicians should handle refrigerant
TEST
~20 min
4
Check Compressor Windings
Measure compressor winding resistance with multimeter. Identify if compressor is the cause.
Measure compressor winding resistance with multimeter. Identify if compressor is the cause.
TEST
~20 min
5
Replace IGBT Module or PCB
If IGBT module is confirmed faulty, replace outdoor PCB. Engage qualified technician.
If IGBT module is confirmed faulty, replace outdoor PCB. Engage qualified technician.
REPLACE
~45 min
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