Garage Door Not Closing Light Flashing Liftmaster

The blink rate on the garage door opener service light points to various error codes.

Garage door not closing light flashing liftmaster. If the sensor indicator lights do not light replace the safety sensors. You may want to check the back of the motor unit. 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. To troubleshoot your liftmaster safety sensors.

The lock button on the door control in on. The main light will blink 10 times indicating a problem. My chamberlain liftmaster garage door opener light fixture flashes and will not close when using remote. If necessary you can close the garage door by pressing and holding the door control push bar until down travel is completed.

Align sensors if the indicator lights glow replace the wires for the sensors. The liftmaster garage door opener lights will flash for ten times. Door will close if i press and hold button on wall. Check if something is blocking the way of the safety sensor.

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. The led on the motor will also blink and serves as a diagnostic tool for troubleshooting. When the safety sensor is not properly aligned or something is obstructing the light beam the garage door will fail to close. 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.

Inspect door control wires for a short staple in wire replace as needed. 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. Garage door sensor locations. An open door will not close if the infrared beam is broken.

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. The back of the motor has a circuit board with a service light as well.

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.