Garage Door Not Closing Light Flashing Liftmaster

Garage door sensor locations.

Garage door not closing light flashing liftmaster.

The sensors appear to be working as the sending and receiving led glow steadily. To troubleshoot your liftmaster safety sensors. If the sensor indicator lights do not light replace the safety sensors. The liftmaster garage door opener lights will flash for ten times.

My chamberlain liftmaster garage door opener light fixture flashes and will not close when using remote. When you see you garage door opener lights flashing and the garage door will not close it could be the lock button or the safety reversing sensors. If necessary you can close the garage door by pressing and holding the door control push bar until down travel is completed. If the opener cannot detect that the safety sensors are properly working or connected then the opener lights will flash and the door will refuse to close.

You ll need to hire a professional to replace the wiring entirely or check to see if the wire disconnected from the opener and reconnect it. Liftmaster uses the protector system which projects an invisible light beam across the door opening and automatically opens the door if something someone crosses it s path. When the safety sensor is not properly aligned or something is obstructing the light beam the garage door will fail to close. Garage door light flashing but won t close.

The protector system safety reversing sensors years ago garage door openers were required to utilize safety sensors to prevent doors from closing on small children. Eliminate any item in between the sensors. Liftmaster motors will not operate when something obstructs the infrared beam between the safety sensors at the bottom of the garage door tracks. The blink rate on the garage door opener service light points to various error codes.

Check if something is blocking the way of the safety sensor. If your garage door sending sensor is showing a yellow light and the other does not show a green light it is likely they are misaligned. You may want to check the back of the motor unit. Inspect door control wires for a short staple in wire replace as needed.

An open door will not close if the infrared beam is broken. The back of the motor has a circuit board with a service light as well. Door will close if i press and hold button on wall. The lock button on the door control in on.

The led on the motor will also blink and serves as a diagnostic tool for troubleshooting.