Delivery Port Door
Delivery Port Door Error
Otis · 400 Elevator
What does Delivery Port Door mean?
Indicates that the DMC is reporting a port door error. This usually means the delivery port door is not opening or closing correctly, which can prevent product dispensing and may cause jams.
Common Causes
- Delivery port door sticking in a closed position.
- Connector to the delivery door switch is disconnected.
- Defective delivery door switch.
- Damaged Delivery Door Power/Signal harness or Port/Delivery Door harness.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Check to make sure the delivery port door is not sticking in a closed position.
- 2
Clean delivery port door slides or replace the port door.
- 3
Check to make sure that the connector to the delivery door switch is connected.
- 4
Reconnect the connector to the switch.
- 5
Check the delivery door switch and replace if defective.
- 6
Check the Delivery Door Power/Signal harness and the Port/Delivery Door harness for damage and replace any found to be defective.
Verified technical data. Last updated: March 2026
Related Faults
Source: Otis 400 Elevator