Depending on the brand.
Hormann garage door won t close all the way.
Adjust in small increments a half turn or less.
If there s something blocking the door from closing all the way a full close will be impossible.
All you will have to do in this case is readjust the sensors to allow the garage door to fully close.
Though this problem should be obvious it shouldn t be overlooked.
How to fix a garage door that won t go all the way down safety sensors.
Continue adjusting until the door opens and closes satisfactorily.
Something blocking the door.
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.
If the door goes up but you can t make it go down you probably need to adjust the sensors.
T his is a pretty uncommon problem but one that can happen after you ve first installed your garage door opener.
If you re in the habit of leaving the garage door open a variety of things including.
Usually these sensors are located on the door tracks and very close to the floor.
As with many such problems the most common problem is the simplest one the motor unit has been unplugged.
The craftsman garage door opener shown here has two set screws that control door travel.
Check your garage floor and the area surrounding it for any objects or debris that might be causing the improper close.
Locate them and determine if they are out of alignment.
First check the sensor lights.
Your garage door opener may tell you this by showing a blinking light.
Try making small adjustments.
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.
Test after each adjustment.
It s important to get this switch at just the right distance from the motor so that the door is able to close all the way but the motor also knows to stop running.