Liftmaster Garage Door Opener Sensor Problems

How to troubleshoot problems with a liftmaster garage door the typical liftmaster opener system.

Liftmaster garage door opener sensor problems.

The door needs lubrication. This video takes you from my problem description to a successful repair all for under 24 00 u s. Basically this is a sensor to prevent the door from closing on people pets or objects. An open door will not close if the infrared beam is broken.

The batteries in the remote control need to be replaced. My liftmaster garage door stopped closing the normal way. Disconnect all wires from back of garage door opener. 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. On each side of the garage door there is what is known as a photo eye or safety sensor. Contact a liftmaster dealer to diagnose the problem and provide service. The safety sensors are out of alignment.

When the door won t close or it closes only part way and immediately opens again. 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. The door opener itself is in a casing mounted on the garage ceiling or wall. If they re turned on in both the sensors then there is no issue with the power supply.

Problems with the safety sensors. If you tried operating your liftmaster garage door opener with the remote control or door control and it didn t work. Check power supply to garage door opener. Remove sensors from brackets and shorten sensor wires to 1 2 ft.

When your garage door opener is not responding to any command from the remote or the door control you need to check if the opener has electricity. If this is the case it could be because the safety sensor is blocked dirty or out of alignment. 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 springs are broken.

30 60 cm from back each of sensor. Look for small led lights on the sensors. A common cause of a malfunctioning garage door sensor is lack of power supply. The track is not aligned properly.

Here are some troubleshooting tips.