This is one of the sensors.
My garage door opener won t close.
One sends a beam of infra red light to the other.
If anything interrupts this beam of light the garage door will not close and the ceiling light on the opener mechanism will flash as mentioned in the previous step.
Sometimes a garage door won t open or close for one reason only the operator has.
The travel controls how far the door goes up and down.
If your garage door won t close all the way the problem could be due.
The photo eye is blocked dirty or misaligned.
Hopefully after you read this you won t have the same problem in the future.
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Clutter or obstructions that block the sensor are the first problems to look for if your door won t close or in extreme cases open at all.
You just need to adjust the travel setting on your door opener.
If your garage door opens ok but won t close then it s possible the safety reversing sensors are not correctly aligned.
Don t just assume that if the path is clear that the sensors are ok.
Depending on the brand.
This problem bugged me for several months.
This can happen if a track is accidentally struck by a heavy object and bent outward.
Garage door not closing all the way.
Does your garage door keep coming back up after it hits the floor.
When a roller on the garage door comes off one of the side tracks the opener won t be able to lift the door.
15 reasons why your garage door won t open or close 1.