First check the sensor lights.
Garage door not closing evenly.
Keep the door open a few feet off the ground as this takes the pressure off the door springs.
When garage doors won t close all of the way or they close unevenly spring adjustment may be called for.
If it is an extension spring system open the door and check to see if one of the cables has come off of one of the pulleys.
Depending on the brand.
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.
If your door has a gap on one side or the other when it s closed the problem is most likely due to a break or other issue with one of the extension springs.
This can happen when the door has shifted to one side causing it to appear uneven.
But when your garage door opener fails to close completely if you don t figure out the problem you ll soon be back to the old fashioned way of opening and closing the garage door.
Repairing your garage door springs can be a dangerous job due to the weight of the door.
Adjusting garage door extension springs.
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.
Put a ladder under the door to make sure it won t close accidentally while you re working on it.
Some times you need to adjust the garage door.
The most simple and common is door shift.
When this happens you need to shift it back into position.
There are several things that can cause this.
Garage door springs are used to offset the weight of the door.
Do not attempt to do this yourself.
In order to fix this you ll want to make small changes to the close limit setting until the door opener knows to stop once the door has reached the floor.
If this is a torsion spring system either a cable has come off the high taper of one of the drums or one of the drums has slipped on the torsion tube and needs to be reset by a professional.
If you suspect you need to adjust one or both of the extension.