Measures to take when alert occurs:
- Drain path
- Water tank full sensor (PS13)
- HM drive board (HMDB)
- The message "Please call service" is displayed on the panel.
Solution:
- Check the drain path, and clean/repair it if any abnormality.
- Check the connector connection and the wiring of HMDB, the pump motor (1) and the sensor, and repair it if any abnormality.
- Check I/O and the operation of the sensor, and repair/replace it if any abnormality. (Wiring diagram: RU-509: 16-O).
- Replace PS13.
- Replace HMDB.
