F910
BLOWN FUSE
Otis · DSD 412 DC Elevator Drive
What does F910 mean?
The PCU detected one or more open AC fuses. This fault indicates a critical interruption in the AC power supply to the drive.
Common Causes
- One or more AC fuses are open (blown).
Repair Steps & Checklist
Click steps to track your progress.
- 1
Remove power from the drive.
- 2
Identify and replace the blown AC fuse(s).
- 3
Repeat the diagnostic test until the SCDU displays the 'PASS' message.
Verified technical data. Last updated: March 2026
Related Faults
Source: Otis DSD 412 DC Elevator Drive