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OVER TEMPERATURE FAULT

Otis · DSD 412 Elevator System

Was bedeutet 908 ?

The calculated SCR junction temperature is above 125 degrees Centigrade. This is derived from the thermistor heat sink measurement combined with the heating effects of measured armature output current on the SCRs. This fault will not shut down the drive.

Häufige Ursachen

  • Ambient temperature too high.
  • Clogged air filter in cabinet.
  • Clogged heat sinks.
  • Cooling fan failure.

Reparaturschritte & Checkliste

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

  1. 1

    Check ambient temperature for high levels and address the underlying cause.

  2. 2

    Clean or replace the air filter in the cabinet.

  3. 3

    Clean the heatsink fins.

  4. 4

    Replace defective cooling fan(s) in the power cube.

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Verifizierte technische Daten. Zuletzt aktualisiert: March 2026

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