Communication error in SD.
Measures to take when alert occurs:
- Software bug.
- The message "Please call service" is displayed on the panel.
Solution:
- Deactivate the sub power switch and unplug the power plug. Restart the main body after 10 seconds.
- Check the connector connection and the wiring of SDCB, and repair it when there is any abnormality.
- Reinstalling SD firmware
- Replace SDCB.
