As the door travels a protrusion bumps the limit switch telling the door to stop.
Garage door keeps stopping and going back up.
Get logic board replacement.
Sometimes this switch can become loose to reconnect the operation of the door push the tab back up that you disconnected by pulling the cord down.
When the logic board wears out it can cause your garage door to close then open and vice versa without explanation.
Sometimes there could be a box or a garbage can sitting too close to the eyes.
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.
A careless or rushed parking job can cause the car s bumper to block the sensor.
You push the button to close the garage door.
Other times it may be a leaf hanging from the bottom of your garage door.
Your logic board needs replaced.
Quite often the cause of your door s malfunction is an improperly set garage door limit.
A garage door that only opens halfway becomes a nuisance for many reasons.
This brain can wear out in time so you could need a replacement.
This is almost always the result of a dirty or obstructed safety feature.
Look at the photo eyes themselves if there are cobwebs or if there is dust on the lenses the eyes will sense this and cause the door reverse.
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.
Sometimes the sensors will be in alignment and just as the door gets close to being shut it will vibrate enough to push one sensor off.
Your garage door sensor works by having two photo sensitive devices on either side of the garage door.
This requires a simple turn with.