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>start DCS !

Door Check Sequence Not Operational Yet

Otis · GAA21750AK3 Service Tool

Was bedeutet >start DCS ! ?

This blinking event message indicates that the Door Check Sequence (DCS) for the OTIS 2000 Controllers MCS120/MCS220 has not yet been performed or is not fully operational, consequently blocking elevator movement. The DCS is a critical safety verification for hoistway door contacts.

Häufige Ursachen

  • The Door Check Sequence has not been initiated since the last power cycle or system setup.
  • The DCS was interrupted or failed to complete successfully.
  • Incorrect configuration settings preventing the DCS from running.

Reparaturschritte & Checkliste

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

  1. 1

    Initiate the Door Check Sequence (DCS) through the GAA21750AK3 service tool menu (SETUP > DCS Run).

  2. 2

    Monitor the DCS progress and address any specific door errors displayed during the sequence.

  3. 3

    Ensure all door safety contacts are correctly installed and wired before starting the DCS.

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Verifizierte technische Daten. Zuletzt aktualisiert: March 2026

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