Garage Door Opener Sensor Trouble Shoot

Inspect each sensor to make sure the green or red power indicator lights are illuminated.

Garage door opener sensor trouble shoot.

Find error code on motor unit. Your final option is to get in touch with a garage door expert to fix the problem for you. Remove the bell wire from the single button control station s terminals and operate the garage door opener from the remotes. Raise the garage door using the control button on the garage wall or the remote control unit from a vehicle.

When your liftmaster garage door opener opens and closes by itself here are the troubleshooting tips you need to follow. The safety sensors may have wire connection problems at the sensor port or at the opener s motor head. The main drive gear is the plastic gear that comes in direct contact with the worm drive gear on the motor. 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 this solves the problem then the control station is faulty or there is a short circuit in the wire. Disconnect the control station. 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. 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.