There is one on each side of the door.
Garage door not closing on one side.
Garage door will not close all the way leaves gap at bottom 1.
There may be a large gap of space between.
If the door goes up but you can t make it go down you probably need to adjust the sensors.
Regardless of the reason for your misfortune there are a number of issues that can be caused from the problem like.
First check the sensor lights.
Side mounted extension springs are installed above the horizontal roller tracks on both sides of the door.
Push the door back to adjust the door and get the center aligned again.
Garage door sensors may not be aligned correctly 3.
There are of course many other problems that can keep your garage door from functioning properly.
Garage floor may have cracked or shifted 2.
If one side of the door is not in line with the other the door won t run smoothly in its tracks and when closed one side of the door won t close completely leaving an open gap.
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.
Garage door seal may be damaged 4.
Keep the door open a few feet off the ground as this takes the pressure off the door springs.
Garage door opener malfunction or door has shifted.
The extension springs are evenly matched and installed to keep the garage door properly aligned so that it runs smoothly throughout the entire length of the track and closes evenly.
One of the more difficult problems for do it yourselfers to diagnose is a worn cable pulley on an extension spring door.
Put a ladder under the door to make sure it won t close accidentally while you re working on it.
Bottom of the door is up on one side.
Depending on the brand.
Click on a problem below to see the possible causes and solutions.
They both have lights and both lights should be on.
The door may rub up against the stop molding making it difficult to maneuver.
The door might be hard to open and close due to it binding.
By pushing the door back into position you should have made the vertical track straighten.