Delivery Port Sense
Delivery Port Sensor Error
Otis · 400 Elevator
What does Delivery Port Sense mean?
Indicates that the DMC is reporting a port sense error. This can be caused by obstructions blocking the port's LEDs or a malfunction of the port's detection components, preventing delivery detection.
Common Causes
- Obstructions blocking the LEDs in the delivery port.
- Faulty connections between the port transmitter and receiver boards.
- Defective port detection cable.
- Faulty port receiver or transmitter boards.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Check to make sure there are no obstructions blocking the LEDs in the delivery port.
- 2
Remove any items blocking the port sensors.
- 3
Check the connections between the port transmitter and receiver boards.
- 4
Replace the port detection cable if connections were found to be correct.
- 5
If replacing the cable does not correct the problem, replace the port receiver and transmitter boards.
Verified technical data. Last updated: March 2026
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Source: Otis 400 Elevator