Otis · DSD 412 Elevator System
This fault is detected by the PCU Diagnostics function (Function #998) and indicates that the Armature Feedback wires are either reversed or not connected at all.
Click steps to track your progress.
Remove power from the drive.
Inspect the Armature Feedback wires and reverse them if connected incorrectly.
Verify that the Armature Feedback wires are securely connected.
Repeat the PCU Diagnostics function to confirm the issue is resolved.