Panasonic WH-UD05JE5 Service Manual page 221

19.5.32 IPM Overheating (F22)
Malfunction Decision Conditions:
During operation of cooling and heating, when temperature 95°C is detected by the outdoor IPM temperature
sensor.
Malfunction Caused:
1 Faulty outdoor unit fan motor.
2 Faulty outdoor unit PCB (main).
Abnormality Judgment:
Continue 3 times in 30 minutes.
Troubleshooting:
Caution
Check the outdoor unit
installation condition.
Is there any improper heat
radiation?
No
Is the outdoor unit
fan motor operating?
Yes
For safety reason and to prevent component breakdown,
always switch off the power before remove and connect the component.
Yes
- Reinstall the outdoor unit.
- Remove the obstacle(s).
No
Replace the outdoor unit
fan motor.
- Defect in IPM.
- Replace the outdoor unit
PCB (main).
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