Garage Door Opener Sensor Trouble Shoot

Raise the garage door using the control button on the garage wall or the remote control unit from a vehicle.

Garage door opener sensor trouble shoot.

Inspect each sensor to make sure the green or red power indicator lights are illuminated. Find error code on motor unit. Garage door opener won t open all the way fix. 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. 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 one or both sensor lights won t come on check the led troubleshooting light on the motor unit for an error code. When your liftmaster garage door opener opens and closes by itself here are the troubleshooting tips you need to follow.

If the green light is off realign the safety sensors until the green light turns on then try closing the door. The main drive gear is the plastic gear that comes in direct contact with the worm drive gear on the motor. The safety sensors may have wire connection problems at the sensor port or at the opener s motor head. 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.