This is probably the most common culprit when a garage door won t close all the way.
Garage door is not closing all the way.
Using a ladder to reach the unit unplug the cord from the outlet.
There are two sensors that sit near the bottom of the garage door just about an inch from the ground.
How to fix a garage door that won t go all the way down safety sensors.
Garage floor may have cracked or shifted 2.
Garage door will not close all the way leaves gap at bottom 1.
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.
Garage door seal may be damaged 4.
First and perhaps most commonly your safety sensors could be working improperly.
Garage door opener malfunction or door has shifted.
Garage door sensors may not be aligned correctly 3.
First check the sensor lights.
Depending on the brand.
If the door goes up but you can t make it go down you probably need to adjust the sensors.
If you re in the habit of leaving the garage door open a variety of things including.
Something blocking the door.
Though this problem should be obvious it shouldn t be overlooked.
You may not have even noticed it before but the main garage door opener unit will be plugged into an electrical outlet that is located on the garage ceiling near the unit.