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.
Nothing blocking garage door still wont close.
Could also try disconnecting the door from the chain should be a pull cord that allows this.
The sensors may not be aligned properly.
The photo eye components consist of two pieces that align face to face across each side of the garage door roughly four feet above the ground.
Though this problem should be obvious it shouldn t be overlooked.
These obstructions can include anything like a garden tool a lawn chair or anything else in the way.
Something blocking the door.
Depending on the brand.
It could be that they are just barely aligned but the vibration from closing causes them to intermittently break the beam.
The majority of garage doors manufactured since the early 1990s are equipped with this safety feature.
Now if there is nothing physically blocking the door and sensors you can check the safety.
If something is blocking the safety beam then the garage door will not close.
Now if your garage door still won t go down after you ve made sure the sensors are properly aligned and there s no obstructions you ll want to take a damp cloth and wipe down the lenses of the sensors.
What to do when your garage door won t close 1.
First check the sensor lights.
Then try closing the door manually.
The first step to take when your garage door won t close is to look around and do a visual check.
If there s something blocking the door from closing all the way a full close will be impossible.