Door Check Sequence Not Operational Yet

What does >start DCS ! mean?

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.

• 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.

Click steps to track your progress.

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.