Error Code: C-0412 Follow

Classification

PF: PF-602m fan heater abnormality

Cause

Fan heater/Lw (DH4) low temperature abnormality

The temperature sensor/4 (TEMS/4) detects the prescribed or lower value continuously for a specified period of time.

Measures to take when an alert occurs

The main body and the option stop immediately.

Estimated abnormal parts

• PF drive board (PFDB)
• AC drive board in PF (ACDB)
• Fan heater/Lw (DH4)
• Temperature sensor/4 (TEMS/4)

Correction

Note

• The message "Please call service" is displayed on the panel.

Solution

1. Check the connection between ACDB and the noise filter of PF.
2. Check the connector connection and the wiring between PFDB and TEMS/4, and repair it when there is any abnormality.
3. Check the connector connection and the wiring between ACDB and DH4, and repair it when there is any abnormality.
4. Check the connector connection and the wiring between PFDB and ACDB, and repair it when there is any abnormality.
5. Check the temperature and the installation condition of the DH4 and the installation condition of the TEMS/4, and repair or replace it when there is any abnormality. (Wiring diagram: PF: 21-F, 24-F)
6. Replace TEMS/4.
7. Replace DH4.
8. Replace ACDB.
9. Replace PFDB.

Faulty part isolation DIPSW

Control during the detachment