Liftmaster Garage Door Safety Sensor Troubleshooting

On either side of the track near the floor you ll find a pair of led safety sensors that stop the door from moving when something is in the door opening.

Liftmaster garage door safety sensor troubleshooting.

If the garage door opener lights blink check the safety reversing sensor. Here s how to tell if garage door sensor is bad five things to check. Other signs include flashing garage door opener lights missing sensor light or flashing sensor lights. Liftmaster motors will not operate when something obstructs the infrared beam between the safety sensors at the bottom of the garage door tracks.

The sensors connect to the opener by a length of 16 gauge wire and the opener itself usually gets its power from a 120 volt circuit in the home s electrical system via a 12 gauge plug. Okay now that you know some of the common signs of garage door sensor malfunction you re ready for the next step troubleshooting. Troubleshooting safety sensors for garage doors. An open door will not close if the infrared beam is broken.

Safety sensors are critical components of most automatic garage doors. The sensors detect obstructions in the path of a closing garage door and. For an existing installatio. Liftmaster garage door openers troubleshooting support get the liftmaster garage door support you need from chamberlain group.

My liftmaster garage door stopped closing the normal way. To prevent the garage door from injuring someone in the door or damaging an item in the way of the door all models of liftmaster garage door openers come installed with a safety sensor. Repeat the safety reverse test after the adjustment is complete. Troubleshooting a liftmaster opener with a flashing light involves inspection of the safety reverse sensing system.

For the door to close correctly without reversing the safety sensors need to be aligned perfectly and there should be nothing in the way of the light beam. If the garage door opener lights don t blink and it is a new installation.