Liftmaster Garage Door Sensors Troubleshooting

When the safety sensor is not properly aligned or something is obstructing the light beam the garage door will fail to close.

Liftmaster garage door sensors troubleshooting.

30 60 cm from back each of sensor. Another reason for the sensors to misalign is that the door track is loose. Loosen one of them and adjust it until the light shines steadily. Disconnect all wires from back of garage door opener.

Eliminate any item in between the sensors. To interact with this component access the preview mode. Get the liftmaster garage door support you need from chamberlain group. Liftmaster garage door openers troubleshooting support.

The liftmaster garage door opener lights will flash for ten times. Check if something is blocking the way of the safety sensor. Troubleshooting a liftmaster opener with a flashing light involves inspection of the safety reverse sensing system. 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.

Liftmaster motors will not operate when something obstructs the infrared beam between the safety sensors at the bottom of the garage door tracks. An open door will not close if the infrared beam is broken. Reattach sending sensor to garage door opener using shortened wires. If sending sensor indicator light glows steadily attach the receiving sensor.

Look also for cobwebs on the door tracks because they could also be blocking the light.