Garage Door Opener Sensor Trouble Shoot

When your liftmaster garage door opener opens and closes by itself here are the troubleshooting tips you need to follow.

Garage door opener sensor trouble shoot.

Find error code on motor unit. Inspect each sensor to make sure the green or red power indicator lights are illuminated. If the green light is off realign the safety sensors until the green light turns on then try closing the door. 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.

Ensure that the wires are properly connected and not loose at both connection sites. If this solves the problem then the control station is faulty or there is a short circuit in the wire. 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.

Garage door opener won t open all the way fix. The main drive gear is the plastic gear that comes in direct contact with the worm drive gear on the motor. 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.

Your final option is to get in touch with a garage door expert to fix the problem for you.