Garage doors are heavy and to prevent injuries manufacturers of automatic openers include safety sensors to stop the door when someone is in the way.
Nothing blocking garage door still wont close.
Check your garage floor and the area surrounding it for any objects or debris that might be causing the improper close.
Like mentioned above there are two lenses one on each side.
See if there is something under the door or blocking the safety sensors.
If something is blocking the safety beam then the garage door will not close.
You may also want to check the tracks and the garage door itself for the culprit.
First check the sensor lights.
When your garage door opens but won t close this is the first thing to check.
This is of course a safety feature to prevent the heavy garage door crushing anyone or anything that might be in the pathway of the door when it comes down.
Another thing that can prevent your garage door from closing are obstructions that are blocking the lenses.
If there s something blocking the door from closing all the way a full close will be impossible.
When the door won t go down automatically.
If your garage door won t close all the way the problem could be due to a blocked photo eye.
If it is sticking the opener won t force it lest something break.
The majority of garage doors manufactured since the early 1990s are equipped with this safety feature.
Your antenna must be free from any obstruction to clearly receive the signal to open and close the door.
When you know you re in range and the door still won t open check to make sure the antenna is hanging down from the motor inside your garage and nothing is blocking it.
If your garage door was installed after 1993 it has two safety sensors on either side of 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.
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.
The first step to take when your garage door won t close is to look around and do a visual check.
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 sensors to ensure they are clean and correctly aligned.
Disconnect the drive mechanism pull the rope hanging from where it engages the track or flick the lever the rope would move it it was there manually close and open the door to verify that it is operating smoothly.
Each sensor has a photo eye that transmits a beam to its mate.
