932

Armature CEMF volts >20% of rated during test.

Otis · DSD 412 Elevator System

What does 932 mean?

This fault indicates that the Armature CEMF voltage exceeds 20% of its rated value during a test. This condition may occur during Self-Tune (Function #997) or Self-Diagnostic (Function #998).

Common Causes

  • Motor is rotating during the test, producing CEMF.
  • High motor armature resistance.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Ensure the motor is mechanically locked and not rotating during the test.

  2. 2

    Ensure that the brush commutator is clean to minimize armature resistance.

  3. 3

    Temporarily increase parameter #7 (Rated Armature Volts) during the test.

Browse all codes in this manual (57)
Verified technical data. Last updated: March 2026

Related Faults

Source: Otis DSD 412 Elevator System
Otis Error 932: Armature CEMF volts >20% of rated during test. — Troubleshooting Guide | ErrorLib