Code: C-0603
Classification: PF: PF power source abnormality
Cause:
1st tandem PF-703 dehumidifier fan /Rt2 (FM24) rotation abnormality.
The FM24EM error detection signal is detected twice in succession within a specified period of time after FM24 was turned ON. However, an error detection signal (blowout of ICP) is not detected.
Measures to take when alert occurs:
The main body and the option stop immediately.
Estimated abnormal parts:
- Dehumidifier fan /Rt2 (FM24: HT-505)
- PF drive board (PFUDB: PF-703)
Correction:
Turn OFF/ON the power switch (SW2) of the main body when releasing an abnormal condition.
Note: The message "Please call service" is displayed on the panel.
Solution:
- 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: 10-C).
- Replace the fan heater (FM24).
- Replace PFUDB.