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ErrorLib — Industrial Fault Code Library

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F917

REVERSED ARMATURE FEEDBACK WIRES

Otis · DSD 412 DC Elevator Drive

What does F917 mean?

The PCU detected reversed Armature Feedback wires. This fault also occurs if the Armature Feedback wires are not connected, leading to incorrect armature voltage sensing.

Common Causes

  • Armature Feedback wires are reversed.
  • Armature Feedback wires are not connected.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Remove power from the drive.

  2. 2

    Reverse the Armature Feedback wires.

  3. 3

    Repeat the diagnostic test until the SCDU displays the 'PASS' message.

Browse all codes in this manual (48)
Verified technical data. Last updated: April 2026

Related Faults

117/118SERIAL COMMUNICATION FAULT400MOTOR OVERLOAD FAULT401EXCESSIVE FIELD CURRENT
Source: Otis DSD 412 DC Elevator Drive
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