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409

UNEXPECTED PCU RESET

Otis · DSD 412 Elevator System

¿Qué significa 409 ?

The PCU processor was unexpectedly reset.

Causas comunes

  • Incorrect PCU software and revision level.
  • Problem with main circuit card hardware.
  • External noise interference.
  • Improper equipment and signal grounding connections.

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    Verify that the correct PCU software and revision level are being used.

  2. 2

    Inspect for external noise interference sources.

  3. 3

    Ensure equipment and signal grounding connections are proper.

  4. 4

    If the problem remains, replace the Drive Control PCB.

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

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