If your garage door opens and suddenly stops it might be because of your logic board.
Garage door opener starts and stops.
Make sure only the safe t beams that came with this garage door opener are installed.
Locate the limit switch adjustment either on the back of the opener or behind the light bulb s lens cover.
It is rare for this problem to suddenly appear.
The travel limit switch mounting setscrew can vibrate loose allowing it to move or fall off.
Set a safety ladder under the garage door opener.
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.
Some models have two screws labeled.
Additionally a simple rebooting can help.
Garage door opens but the motor won t stop running.
Adjust the limits as needed.
When the opener reverses the screw turns the opposite way and the nut travels back.
When this unusual problem occurs it means the up limit switch probably needs to be moved away from the motor unit.
This can happen if a track is accidentally struck by a heavy object and bent outward.
The 3rd cause is a malfunctioning travel limit switch.
When the opener is activated the screw rotates causing the nut to move until it reaches the switch.
If it is a new installation check the postion of the door arm.
The logic board receives and responds signals to any remote.
You might need to consider replacing it if your door is not working properly or you may purchase a new opener.
In order to fix this you ll want to make small changes to the close limit setting until the door opener knows to stop once the door has reached the floor.
If your garage door is closing fully and then reversing to open again then it may be due to a problem with the close limit switch.
Doing this can save you some amount of cash.
Check if the limits are properly set.
If it happens at all it will usually be noticed when you first install the garage door opener.
When a roller on the garage door comes off one of the side tracks the opener won t be able to lift the door.
There may be two nuts on one track.
Garage door starts down then stops and goes back up or safe t beam system malfunction.