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937
Low read-back volts from motor armature circuit.
Otis · DSD 412 Elevator System
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This fault indicates that a low voltage read-back is detected from the motor armature circuit. This can occur during Self-Tune (Function #997) or Self-Diagnostic (Function #998).
Häufige Ursachen
- Missing or reversed wires connected to the armature voltage feedback at A2TB5-1 and A2TB5-2.
- Component problem where the feedback voltage divider ratio does not match the one identified in the Cube ID PCB.
Reparaturschritte & Checkliste
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- 1
Check for missing or reversed wires connected to the armature voltage feedback terminals A2TB5-1 and A2TB5-2.
Verifizierte technische Daten. Zuletzt aktualisiert: March 2026
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Quelle: Otis DSD 412 Elevator System