DCS Front Door Error

What does Front Door Error mean?

A failure was detected in the Door Check Sequence (DCS) specifically related to the front door at a reported level (e.g., Level 01). This error indicates that the front door's operation or its associated safety contacts did not pass the automated check, blocking the OTIS 2000 Controllers MCS120/MCS220 elevator.

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

Click steps to track your progress.

1. 1

   Identify the specific level where the error occurred from the GAA21750AK3 service tool display (e.g., - 01 DW).

2. 2

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

3. 3

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

4. 4

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