T his is a pretty uncommon problem but one that can happen after you ve first installed your garage door opener.
Troubleshooting common overhead garage door problems.
Try making small adjustments.
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.
The good news is that most problems are small and can be remedied with a few simple fixes as described in this troubleshooting guide.
Garage door reversing before closing garage door openers manufactured after 1993 include sensors to prevent a door from closing on a child or pet.
This is related to the up limit switch.
To help you troubleshoot your garage door issues here are the top 10 reasons your garage door won t work.
Two possible problems can lead to a garage door reversing before it even touches the floor.
This may sound obvious but your garage door transmitters need power to work.
Gaps between rollers and rail if there is a gap between the garage door rollers and the rail or if the rail is not straight then you need an immediate fix.
Garage door openers have an adjustment screw that controls the closing force the pressure with which a door is allowed to descend before the motor switches off.