How To Troubleshoot A Garage Door Opener Sensor

This will disconnect the garage door from the opener.

How to troubleshoot a garage door opener sensor.

Flip the circuit that controls the power to the garage door or disconnect the garage door plug from the wall. The door should stay open and the motor unit lights should blink. Door sensors do go bad so if no light is showing at all you may need to replace them. Other signs include flashing garage door opener lights missing sensor light or flashing sensor lights.

It s important that there s no power running to your garage door motor or you may electrocute yourself when disconnecting the door sensors. 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. Adjust each sensor in small. Cleaning and adjustment remove any debris dust or cobwebs from the electric eye lenses on each sensor with a clean rag.

Loosen the nuts just. If you re too far away this can cause a problem with opening or closing the door. The small light on each sensor should be lit up when nothing is between them. Cycle the garage door.

Open the garage door manually to about halfway. To check if your garage door is balanced perform these troubleshooting steps. Place a box or similar object between the safety sensors to block the sensing beam. You may also need to reprogram your keypad or replace the batteries in it.

Align or replace the safety sensor. Also verify the antenna on the motor unit is in the proper placement. Okay now that you know some of the common signs of garage door sensor malfunction you re ready for the next step troubleshooting. Open the garage door.

Attempt to close the garage door using a remote. Pull the emergency cord down and towards the garage door opener. Disconnect the power to the garage door. The safety sensors may have wire connection problems at the sensor port or at the opener s motor head.