Garage Door Not Closing Light Flashing Liftmaster

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.

Garage door not closing light flashing liftmaster.

Garage door sensor locations. To troubleshoot your liftmaster safety 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 liftmaster garage door opener lights will flash for ten times.

The back of the motor has a circuit board with a service light as well. Garage door light flashing but won t close. Door will close if i press and hold button on wall. The blink rate on the garage door opener service light points to various error codes.

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. Inspect door control wires for a short staple in wire replace as needed. If necessary you can close the garage door by pressing and holding the door control push bar until down travel is completed. 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.

Align sensors if the indicator lights glow replace the wires for the sensors. An open door will not close if the infrared beam is broken. Led is not lit on door control. Check if something is blocking the way of the safety sensor.

The sensors appear to be working as the sending and receiving led glow steadily. 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. The main light will blink 10 times indicating a problem. The led on the motor will also blink and serves as a diagnostic tool for troubleshooting.

You may want to check the back of the motor unit. 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. Eliminate any item in between the sensors. The lock button on the door control in on.

My chamberlain liftmaster garage door opener light fixture flashes and will not close when using remote.