Estimated abnormal parts:
- Dehumidifier fan /Rt3 (FM26: HT-505)
- PF drive board (PFUDB: PF-703)
- Check the connector connection and the wiring between PFUDB and the fan heater, and repair it if any abnormality.
- Rotate the fan or I/O by hand, and repair it if any abnormality. (Wiring diagram: PF-703: 11-D).
- Replace the fan heater (FM26).
- Replace PFUDB.
