CCU-320 Opening Tension Frame

Condition:
If there is no signal from the microswitch, tension frame up, the tension frame motor is continuously running against a mechanical stop and an overload will be detected. Diagnostic trouble code CCU-320 is displayed.

Possible Source:
- Open circuit in wire from microswitch.
- Wire from microswitch has short-circuit to voltage supply.

Fault Symptom(s):
Power roof (hood) mechanism not working..