If the garage door only travels down an inch or so before reversing something is probably blocking the beam between the two safety sensors at the bottom of the rails or the sensors aren t aligned.
Garage door reverses when going down.
In cases like this your travel down setting simply needs to be adjusted to the new distance.
It goes partway down reverses direction and goes back up again.
Turn the down adjustment one full turn counterclockwise.
If the door reverses part way down and you are sure there is no obstruction or binding increase the closing force a small amount and try it again.
Try to lower the door.
But changes in weather conditions can causes your garage door components to shift or contract.
Continue to turn the down.
This is almost always the result of a dirty or obstructed safety feature.
If the door closes and reverses it is traveling too far and you should decrease the travel.
If you find that your garage door is reversing before even hitting the floor then it could be possible that there is a problem with the close force setting.
Your limit switch needs to be adjusted.
Replace them if they re broken.
Photo eyes or safety sensors are mounted to the track on either side of the garage door about 6 inches up from the ground.
You push the button to close the garage door.
The photo eyes send an infrared beam across the bottom of your garage door opening if that beam is broken the door will reverse.
Find local garage door repair.
When that happens the distance your garage door needs to travel may change.