You have a broken spring.
My garage door won t go all the way up.
Can you see about a 2 gap somewhere in any of the springs.
Unplug the garage door opener unit.
First thing to do.
If you happen to be home when these break you ll hear a loud bang from inside your garage.
In this case call a service company to replace the spring s.
On the main console the box that hangs from the ceiling you ll see a few different nobs and or buttons.
The limit adjusters control how far the garage door goes up and how far it goes down.
If the door opens easily and.
Are very dangerous and can cause serious damage even death.
From here lift the garage door by hand about 3 feet above the ground and then release the door and see were it lands.
If you can close it completely to ground level.
There is one on each side of the door.
If your garage door is not balanced right it won t go up or down all the way.
You should also find buttons or nobs that will adjust the force too.
Opener manually lift the garage door.
If your garage door all of sudden won t go up and you re sure the transmitters are working properly and power is getting to the motor then you may have broken torsion springs.
In order to figure out why your garage door won t open all the way you first need to make sure it s secure.
Though this problem should be obvious it shouldn t be overlooked.
You don t want the door to come crashing down on you or anyone else once you begin disengaging your garage door opener.
Check your garage floor and the area surrounding it for any objects or debris that might be causing the improper close.
You may also want to check the tracks and the garage door itself for the culprit.
To check the balance pull the emergency release cord or chain to disconnect the door.
Locate the limit adjusters.
They both have lights and both lights should be on.
If the door goes up but you can t make it go down you probably need to adjust the sensors.
You should now be able to move the door up and down by hand.
Above almost all sectional garage door there are one or more springs.
If the door is very heavy then you have a spring that is broken or.