How To Troubleshoot A Garage Door Opener Sensor

You may also need to reprogram your keypad or replace the batteries in it.

How to troubleshoot a garage door opener sensor.

Firstly check that you re using it within the range required for your opener. Open the garage door manually to about halfway. Pull the emergency cord down and towards the garage door opener. To check if your garage door is balanced perform these troubleshooting steps.

Align or replace the safety sensor. Disconnect the power to the garage door. This will disconnect the garage door from the opener. Attempt to close the garage door using a remote.

Okay now that you know some of the common signs of garage door sensor malfunction you re ready for the next step troubleshooting. It s important that there s no power running to your garage door motor or you may electrocute yourself when disconnecting the door sensors. Loosen the nuts just. If the door goes up but goes down only when you hold down the wall switch check to see that the safety sensors are in alignment.

Door sensors do go bad so if no light is showing at all you may need to replace them. Place a box or similar object between the safety sensors to block the sensing beam. Cycle the garage door. The safety sensors may have wire connection problems at the sensor port or at the opener s motor head.

The small light on each sensor should be lit up when nothing is between them. Open the garage door. Ensure that the wires are properly connected and not loose at both connection sites. Cleaning and adjustment remove any debris dust or cobwebs from the electric eye lenses on each sensor with a clean rag.

Also verify the antenna on the motor unit is in the proper placement. Loosen the small nuts that hold each sensor to the l brackets with a small adjustable wrench. The door should stay open and the motor unit lights should blink. If you re too far away this can cause a problem with opening or closing the door.