DCS Rear Door Error

Was bedeutet Rear Door Error ?

A failure was detected in the Door Check Sequence (DCS) specifically related to the rear door at a reported level. This error indicates that the rear door's operation or its associated safety contacts did not pass the automated check, blocking the OTIS 2000 Controllers MCS120/MCS220 elevator.

• Rear door not opening or closing correctly due to obstruction or mechanical issue.
• Faulty rear door safety contacts (DW input) or their wiring.
• Misalignment of the door or its tracks preventing correct operation.
• Issues with the rear door operator.

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1. 1

   Identify the specific level where the error occurred from the GAA21750AK3 service tool display.

2. 2

   Visually inspect the rear door path for any physical obstructions or damage to the door panels or tracks.

3. 3

   Verify the functionality and proper alignment of the rear door safety contacts and limit switches.

4. 4

   Check electrical continuity of the rear door safety circuit wiring from the controller to the door contacts.