hi guys

Need some advise for this issue.

Lift always not working when floor level, check:-

1. GECB, status Shutdown
2. Check on GECB, events show this
- 0011 SpbCommErr, 0012 Power on, 0014 Poweroffon, 0027 PowerReturn
3. (2) Drive menu, show event log this
- 111 No Id fdbk,
4. (3) SPBC, event shows this
- 508 Overspeed, 512 Bat Charged

If i power off and power on back, the lift will back to normal operation.

May i know whats wrong with this?

Best regards
Nick