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>ACS is on !

Anti Creeping Switch Operated

Otis · GAA21750AK3 Service Tool

Hva betyr >ACS is on ! ?

This blinking event message indicates that the Anti Creeping Switch (ACS) is in an operated state, which has blocked the elevator. The ACS is a safety device designed to prevent unintended movement of the car when it is at a landing.

Vanlige årsaker

  • Mechanical actuation of the Anti Creeping Switch due to minor car movement or incorrect leveling.
  • Faulty Anti Creeping Switch wiring or internal failure.
  • Misalignment of the ACS triggering mechanism.

Reparasjonssteg & Sjekkliste

Klikk på steg for å spore fremgangen.

  1. 1

    Verify the elevator car is correctly leveled at the landing.

  2. 2

    Inspect the Anti Creeping Switch (ACS) for mechanical damage, obstruction, or misalignment.

  3. 3

    Check the wiring to the ACS for continuity and secure connections.

  4. 4

    Measure the state of the ACS contact using a multimeter to confirm open/closed status.

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Verifisert teknisk data. Sist oppdatert: March 2026

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Kilde: Otis GAA21750AK3 Service Tool