Panasonic WH-UD28AE Service Manual page 45

16.5.3. Compressor Temperature Sensor Abnormality (H15)
Malfunction Decision Conditions:
During startup and operation of heating, the temperatures detected by the compressor temperature sensor are used to
determine sensor error.
Malfunction Caused:
1. Faulty connector connection.
2. Faulty sensor.
3. Faulty PCB.
Abnormality Judgment:
Continue for 5 seconds.
45