Locate the limit adjusters.
Garage door does not go down all the way.
How to adjust a garage door opener s travel setting when the garage door won t close all the way adjusting the travel setting on a garage door opener the craftsman garage door opener shown here has two set screws that control door travel.
Carefully inspect the track and the rollers to see if something is stuck.
First check the sensor lights.
Something blocking the door.
Adjust in small increments a half turn or less.
Depending on the brand.
On the main console the box that hangs from the ceiling you ll see a few different nobs and or buttons.
If there s something blocking the door from closing all the way a full close will be impossible.
The limit adjusters control how far the garage door goes up and how far it goes down.
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.
Though this problem should be obvious it shouldn t be overlooked.
Start by making sure your garage door is open all the way.
Also check the cables.
When the door won t go down automatically.
Something mechanical has most likely bound up.
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.
A twisted or slightly bent track may be the culprit.