Otis · 400 Elevator
Indicates that more than 255 escrow attempts have occurred since the last coin was successfully accepted. This could be due to repeated coin rejections, a sensor issue, or an obstruction in the escrow path.
Click steps to track your progress.
Inspect door tracks, sills, and safety edges for any physical obstructions or debris.
Verify the proper operation and alignment of door zone sensors, safety sensors, and leveling sensors.
Check the elevator control system's diagnostic logs for repeated door open/close attempts, leveling failures, or related sensor faults.
Measure the supply voltage to the door controller and primary elevator control unit to ensure stable power delivery.