Liftmaster Garage Door Safety Sensor Troubleshooting

Okay now that you know some of the common signs of garage door sensor malfunction you re ready for the next step troubleshooting.

Liftmaster garage door safety sensor troubleshooting.

The door reverses for no apparent reason and garage door opener lights don 7 blink. If the garage door opener lights don t blink and it is a new installation. Liftmaster motors will not operate when something obstructs the infrared beam between the safety sensors at the bottom of the garage door tracks. Troubleshooting a liftmaster opener with a flashing light involves inspection of the safety reverse sensing system.

Liftmaster garage door openers troubleshooting support get the liftmaster garage door support you need from chamberlain group. Troubleshooting safety sensors for garage doors. 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.

An open door will not close if the infrared beam is broken. 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. 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. If the garage door opener lights blink check the safety reversing sensor.

Repeat the safety reverse test after the adjustment is complete. My liftmaster garage door stopped closing the normal way. Safety sensors are critical components of most automatic garage doors. Whether you have a belt drive chain drive or wall mount model find helpful resources manuals videos and more to help you diagnose and fix the problem.

This video takes you from my problem description to a successful repair all for under 24 00 u s. 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.