The Down Limit Switch Drops Off

What does 04 mean?

This error occurs when both the Up and Down Limit switches are activated simultaneously while the car is not at the lowest floor during normal service, or when the Down Limit switch activates incorrectly during a downward travel. This indicates a conflict in position detection or a faulty limit switch component.

• Both Up and Down Limit switches are activated concurrently when the car is not positioned at the lowest floor.
• The Down Limit switch activates erroneously during the car's downward movement.
• Malfunction, damage, or incorrect installation of the Down Limit switch.

Click steps to track your progress.

1. 1

   Verify the physical position and functionality of both the Up Limit and Down Limit switches.

2. 2

   Inspect the wiring to the Down Limit switch for continuity and proper secure connection.

3. 3

   Check if the car is correctly positioned; if it is not at the lowest floor, investigate why the Down Limit switch is active.