Look at both the garage door sensors.
Garage door sensor lights.
Inspect each sensor to make sure the green or red power indicator lights are illuminated.
Okay now that you know some of the common signs of garage door sensor malfunction you re ready for the next step troubleshooting.
If one of the leds is blinking the sensors need to be realigned.
Garage door light flashing but won t close.
To prevent the garage door from injuring someone in the door or damaging an item in the way of the door all models of liftmaster garage door openers come installed with a safety sensor.
How garage door sensors work and the color the lights should be.
How do they work.
Start by checking if.
The light is emitted from one side of the garage door to a receiving unit on the other side of the door.
The garage door sensor yellow light and the green light together create a solid illumination.
If necessary you can close the garage door by pressing and holding the door control push bar until down travel is completed.
Here s how to tell if garage door sensor is bad five things to check.
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.
Raise the garage door using the control button on the garage wall or the remote control unit from a vehicle.
We ll also highlight the significance of hiring a professional to fix the issue.
Garage door sensors work using an infrared beam of light.
If you do not see a solid illumination or your garage door is not working the problem is most likely due to the sensors being out of line.