A garage door that only opens halfway becomes a nuisance for many reasons.
Garage door only opens a little and stops.
This requires a simple turn with.
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.
In fact you really should read the entire garage door repair article.
You might need to consider replacing it if your door is not working properly or you may purchase a new opener.
These limits set the distance the door will open or close before stopping.
Adjust the switch either on the rear of the opener unit or on the track and try the opener again to confirm the solution.
You have an open limit and a close limit on your garage door opener.
Your garage door will immediately stop and close if anything is in the field of view of the lenses.
This helps you determine if the problem is related to the door or the motor.
Try to operate the garage door manually.
In the down direction if the limit is set beyond the point at which the door closes fully the door will hit the floor and act as if it is hitting something and the safety feature tells it to reverse.
It will make troubleshooting later much easier.
If your garage door opens and suddenly stops it might be because of your logic board.
Check for obstructions the first thing you ll want to do when your garage door opens a little and then stops is to check to see if there is anything obstructing the lenses.
The logic board receives and responds signals to any remote.
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.
The garage door can be operated manually by disconnecting the garage door opener from the door using the red pull cord.
It will make troubleshooting later much easier.
The garage door motor fails to stop running.
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.
Remember that sometimes a garage door opener can increase the binding in a door just because of the way it pushes the door down.
If the door is working properly it should be easy to lift by hand.
It s also a good idea to take a damp cloth and wipe off the lenses.
If the door opens or closes but the motor continues to run the limit switch is probably to blame.