Liftmaster Garage Door Opener Sensor Problems

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 garage door opener sensor problems.

When the door won t close or it closes only part way and immediately opens again. Problems with the safety sensors. If you find the lights turned off in one or both the sensors it indicates that there is a problem in power supply. If you tried operating your liftmaster garage door opener with the remote control or door control and it didn t work.

Disconnect all wires from back of garage door opener. My liftmaster garage door stopped closing the normal way. Look for small led lights on the sensors. Here are some troubleshooting tips.

The garage door s path may be blocked. If this is the case it could be because the safety sensor is blocked dirty or out of alignment. The track is not aligned properly. Liftmaster garage door openers troubleshooting support get the liftmaster garage door support you need from chamberlain group.

Troubleshooting a liftmaster opener with a flashing light involves inspection of the safety reverse sensing system. Inspect sensor wires for a short staple in wire correct wiring polarity black white wires reversed broken or disconnected wires replace attach as needed. The door opener itself is in a casing mounted on the garage ceiling or wall. Liftmaster motors will not operate when something obstructs the infrared beam between the safety sensors at the bottom of the garage door tracks.

Basically this is a sensor to prevent the door from closing on people pets or objects. Contact a liftmaster dealer to diagnose the problem and provide service. If they re turned on in both the sensors then there is no issue with the power supply. A common cause of a malfunctioning garage door sensor is lack of power supply.

How to troubleshoot problems with a liftmaster garage door the typical liftmaster opener system. The door needs lubrication. An open door will not close if the infrared beam is broken. On each side of the garage door there is what is known as a photo eye or safety sensor.

This video takes you from my problem description to a successful repair all for under 24 00 u s. The batteries in the remote control need to be replaced. The springs are broken. Check power supply to garage door opener.

Remove sensors from brackets and shorten sensor wires to 1 2 ft.