Though this problem should be obvious it shouldn t be overlooked.
Garage door opener wont close even though nothing in way.
The door won t close all the way if the bolt is too high on the track.
If there s something blocking the door from closing all the way a full close will be impossible.
Genie openers apply only limited force to the garage door during closing.
Step 4 turn the close force dial in small increments until the garage door reaches the ground when you hit the close button on the remote.
It could be that they are just barely aligned but the vibration from closing causes them to intermittently break the beam.
The sensors may not be aligned properly.
Something blocking the door.
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.
Depending on the brand.
This problem bugged me for several months.
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.
Could also try disconnecting the door from the chain should be a pull cord that allows this.
Then try closing the door manually.
If your garage door won t close all the way the problem could be due to a blocked photo eye.
One or more of these reasons is likely responsible for your garage door closing partially but not all the way.
Don t just assume that if the path is clear that the sensors are ok.
First check the sensor lights.