This brain can wear out in time so you could need a replacement.
Garage door opener goes down and the goes bak up.
I have a craftsman garage door opener 1 2 hp chain drive.
Even if i hold the button down the garage door returns up after a foot or so.
I have checked the photo eyes and they look fine no blinking lights.
Your garage door opens when it hits the ground.
Check if the limits are properly set.
The garage door will automatically go in reverse.
Your garage door opens immediately after closing.
Garage door only travels a little way and then reverses does your garage door only travel a little way 6 inches or so and then reverse.
It may be your garage door sensor.
The problem that i am having is it starts down then after about a foot it goes back up.
Make sure your garage door is closed disconnect your chamberlain garage door opener from the garage door by pulling the emergency release handle down and back towards the garage door.
It s approx 4 5 years old.
If it is a new installation check the postion of the door arm.
Try replacing the batteries in the remote and trying again.
In the case that the door responds to the switch then there s a good chance it s the remote that has an issue.
Most likely this will resolve the situation.
Garage door opener keeps going back up.
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.
The garage door keeps going up and down.
Make sure only the safe t beams that came with this garage door opener are installed.
If that isn t the problem then try opening and closing the door with the wall switch.
It goes partway down reverses direction and goes back up again.
Adjust the limits as needed.
This is almost always the result of a dirty or obstructed safety feature.
You push the button to close the garage door.
The garage door goes down then back up.
Garage door starts down then stops and goes back up or safe t beam system malfunction.
There are four common problems with garage door sensors three of these homeowners can fix themselves.
Manually lift the garage door and release it when it is opened halfway.