Garage door opener malfunction or door has shifted.
Garage door not closing tight at top.
It should be taut enough to allow the top of the door to hit tight up against the outside weather stripping when the door closes and hits the floor to prevent drafts.
One controls how far the door closes and one controls how far it opens.
But the springs that are part of your overall garage door system balance the door in two ways.
If there s something blocking the door from closing all the way a full close will be impossible.
Tighten all the screws in both leaves of this hinge.
So without the springs you might not be able to even open your garage door.
Garage door reversing before closing garage door openers manufactured after 1993 include sensors to prevent a door from closing on a child or pet.
Start at the top hinge which tends to bear the heaviest load of the three.
Add screws to any empty holes you see.
If it is loose and wobbles around tighten it enough to make it stable and not visibly loose but not too tight that it becomes too rigid and inflexible.
Once you re finished check the door to see if this has resolved your problem.
Garage floor may have cracked or shifted 2.
One or more of these reasons is likely responsible for your garage door closing partially but not all the way.
If anything interrupts this beam of light the garage door will not close and the ceiling light on the opener mechanism will flash as mentioned in the previous step.
One sends a beam of infra red light to the other.
First you need to see what has caused this to happen.
Balancing the weight of the door is the job of the torsion spring or springs which are mounted along the top edge of the door.
Though this problem should be obvious it shouldn t be overlooked.
If you garage door is lowering then reversing.
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 sensors may not be aligned correctly 3.
The door should then hang correctly.
We mentioned that the springs are needed to balance the great weight of the door and make it easier to open and close the door.
When you have positioned it correctly tighten the lag screw as tight as you can.
Something blocking the door.
The reasons your garage door has a gap in it could be.
Adjust this knob to lower the door to the floor but don t adjust it too far or the door will push against the the top.
Garage door seal may be damaged 4.
First check the sensor lights.
If it has not proceed to step 3.
Depending on the brand.
Tighten the screws on the hinges using a screwdriver.
