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IPM malfunction or IGBT over−strong current protection diagnosis and solution (P0)
Error Code P0
Malfunction decision conditions When the voltage signal that IPM send to compressor drive chip is abnormal, the display
LED shows “P0” and AC turns off.
Supposed causes Wiring mistake; IPM malfunction; Outdoor fan assembly faulty Compressor malfunction;
Outdoor PCB faulty
Fig. 32 – Troubleshooting
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