Garage Door Opener Sensor Trouble Shoot

Disconnect the control station.

Garage door opener sensor trouble shoot.

The safety sensors may have wire connection problems at the sensor port or at the opener s motor head. Your final option is to get in touch with a garage door expert to fix the problem for you. Raise the garage door using the control button on the garage wall or the remote control unit from a vehicle. Remove the bell wire from the single button control station s terminals and operate the garage door opener from the remotes.

Inspect each sensor to make sure the green or red power indicator lights are illuminated. Find error code on motor unit. If one or both sensor lights won t come on check the led troubleshooting light on the motor unit for an error code. This is not a common problem at all but it could happen.

Ensure that the wires are properly connected and not loose at both connection sites. When your liftmaster garage door opener opens and closes by itself here are the troubleshooting tips you need to follow. Replace the main gear drive if the garage door opener makes a grinding noise but the door doesn t move your main drive gear is probably toast. If the green light is off realign the safety sensors until the green light turns on then try closing the door.

If none of these troubleshooting options work look at the garage door sensor s manual and see if there is anything in it that can help you to fix the issue.