Though this problem should be obvious it shouldn t be overlooked.
Nothing blocking garage door still wont close.
First check the sensor lights.
The sensors may not be aligned properly.
Then try closing the door manually.
The majority of garage doors manufactured since the early 1990s are equipped with this safety feature.
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.
One or more of these reasons is likely responsible for your garage door closing partially but not all the way.
If your garage door won t close all the way the problem could be due to a blocked photo eye.
Depending on the brand.
These obstructions can include anything like a garden tool a lawn chair or anything else in the way.
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.
It could be that they are just barely aligned but the vibration from closing causes them to intermittently break the beam.
If something is blocking the safety beam then the garage door will not close.
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.
Try the wall.
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.
Now if there is nothing physically blocking the door and sensors you can check the safety.