This is almost always the result of a.
Liftmaster garage door goes down and then back up.
Your garage door opens when it hits the ground.
Turn the down limit switch screw clockwise one turn with a flat blade screwdriver if the garage door closes and then begins to open back up.
There are four common problems with garage door sensors three of these homeowners can fix.
The garage door keeps going up and down.
It goes partway down reverses direction and goes back up again.
It may be your garage door sensor.
Your travel down setting needs to be adjusted.
How to fix a garage door that keeps reversing.
The garage door goes down then back up.
Possible reasons why your garage door hits the floor then goes back up.
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.
The garage door will automatically go in reverse.
As is the case with so many issues at the home there s no one reason why your garage door closes then opens.
Garage door opener keeps going back up.