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907

THERMISTOR FAULT

Otis · DSD 412 Elevator System

¿Qué significa 907 ?

The thermistor is found to be open or shorted. This fault can also occur if the machine room ambient temperature is below 0°C (as the resistance detected is too high) or if an open thermostat is present on larger drives. This fault will not shut down the drive.

Causas comunes

  • Open or shorted thermistor.
  • Ambient temperature below 0°C.
  • Open thermostat (on larger drives).

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    Check and/or replace the thermistor; it should measure approximately 200K ohms at 20°C room temperature.

  2. 2

    Verify the machine room ambient temperature is above 0°C.

Ver todos los códigos en este manual (57)
Datos técnicos verificados. Última actualización: March 2026

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