Anytime there is a problem with the sensors or sensor alignment the main light will flash 10 times when the door reverses to the open position.
Garage door sensors arent aligned.
If you have a laser level you can use it instead of a string to align your garage door.
Garage door sensors must be aligned to ensure your garage door opens and closes properly.
Monitor the led lights on the photo eyes watch for blinking lights.
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.
The photo eyes mount on the outside of the door tracks towards the floor.
Push the wall control button to open the garage door.
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Garage door opener safety sensors can go bad due to age excess sun or water exposure or from physical damage caused by lawn tools bicycles and trash cans that have been repeatedly hitting the sensors.
Sensors may fall out of alignment over time so it s important to understand how to align garage door sensors.
This is something to consider if you decide.
Press the button that closes the garage door on the garage wall or on your remote.
Garage door sensors are safety devices that prevent the door from closing on people pets or objects in the doorway.
Locate the photo eyes on each side of the garage door opening.
For the door to close correctly without reversing the safety sensors need to be aligned perfectly and there should be nothing in the way of the light beam.
Garage door sensors are designed to prevent the door from closing if something obscures the sensor.
The latest garage door sensors are technologically advanced and even allow you to control the opening and closing through an app on your smartphone.
Fixing the sensor on overhead garage doors.
You can have a bad rpm sensor board that will cause the door to reverse but the main light will not flash.
If the sensors are working the garage door should immediately stop closing and return to the open position.
Proper height for a garage door sensor is 4 to 6 inches 10 2 to 15 2 cm.
They are usually black in color and will have small green or red led lights.
If your garage door won t close after aligning the safety sensors you might need to replace them.
In this case you will set up the level aligned with one sensor then adjust the opposite sensor until the beam of your laser level is hitting the sensor.
In this video i show you how to realign your garage door sensors so that the garage door can function properly.
