Trouble Shooting - Pioneer WAE012AMFI15RL Service Manual

9.4.7 IPM malfunction or IGBT over-strong current protection diagnosis and solution(P0)
Error Code
Malfunction decision
conditions
Supposed causes

Trouble shooting:

Remark：
1) 9000 BTU, 230 VAC both Cool Only and Heat Pump models: Measure the black pin and red pin of the motor
connector, the resistance should be around 385Ω at 20℃(68℉)
2) 9000 BTU and 12000 BTU, 115 VAC both Cool Only and Heat Pump models: Measure the black pin and red pin
of the motor connector, the resistance should be around 50Ω at 20℃(68℉)
3) 12000 BTU, 230 VAC both Cool Only and Heat Pump models: Measure the black pin and red pin of the motor
connector, the resistance should be around 293Ω at 20℃(68℉)
4) 18000 BTU, 230 VAC both Cool Only and Heat Pump models: Measure the black pin and red pin of the motor
connector, the resistance should be around 84.5Ω at 20℃(68℉)
5) 24000 BTU, 230 VAC both Cool Only and Heat Pump models: Measure the black pin and red pin of the motor
connector, the resistance should be around 88.5Ω at 20℃(68℉)
P0
When the voltage signal that IPM send to compressor drive chip
is abnormal, the display LED will show "P0" and AC will turn off.
Wiring mistake; IPM malfunction; Outdoor fan ass'y faulty
Compressor malfunction; Outdoor PCB faulty
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