First check the sensor lights.
Why do garage doors not stay closed.
Sweep around the perimeter of the door where it makes contact with the.
Depending on the model yours may also have a door sensor sometimes called a door edge sensor that stops and reverses the garage door when it encounters a person or object in its path.
The travel controls how far the door goes up and down.
If you re craftsman chamberlain etc garage door opener is closing and then opening up its likely a common problem related to the stop limit mechanism.
This issue usually arises with brand new garage doors that were just installed or older models that may need to be reset.
Sometimes you ll notice that your garage door closes all the way and then immediately goes back up instead of staying in the closed position.
Troubleshooting your garage door.
You just need to adjust the travel setting on your door opener.
As you suggested you likely just need to adjust the down limit travel or the closing force.
If it still reverses there may be an object on the floor that the door is making contact with before it is completely closed.
Tighten the hinges first if you find that the latch contacts the strike plate too high or too low make sure all the door s hinge screws are tight.
A broken garage door is frustrating.
If you have a problem with your wall switch being unable to open or close the garage door then it s often a problem somewhere in the power supply.
If that doesn t solve the problem try this trick.
Remove one of the screws on the jamb side of the hinge and drive in a 3 in.
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.
The most common reason as to why a garage door won t stay closed is that the limit settings are off.
This means that the limits are telling the garage door that it s fully opened when the door is in reality closed.
Adjusting the limit travel setting.
Does your garage door keep coming back up after it hits the floor.
Garage door not closing all the way.
While the issue could require an expert there are a few troubleshooting steps you can take before scheduling garage door repairs.
The solutions first check your fuses gfci or breaker to see if any of them have tripped broken or burnt out.