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.
Garage door keeps stopping and going back up.
Quite often the cause of your door s malfunction is an improperly set garage door limit.
This brain can wear out in time so you could need a replacement.
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.
This is almost always the result of a dirty or obstructed safety feature.
Your garage door s logic board is the brain of your garage door opener.
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.
Your garage door sensor works by having two photo sensitive devices on either side of the garage door.
This requires a simple turn with.
Other times it may be a leaf hanging from the bottom of your garage door.
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 garage door that only opens halfway becomes a nuisance for many reasons.
When the logic board wears out it can cause your garage door to close then open and vice versa without explanation.
Get logic board replacement.
Sometimes there could be a box or a garbage can sitting too close to the eyes.
As the door travels a protrusion bumps the limit switch telling the door to stop.
It goes partway down reverses direction and goes back up again.
A careless or rushed parking job can cause the car s bumper to block the sensor.
Your logic board needs replaced.