If this is a sears srt without external travel limit switches the internal travel limit is out of adjustment telling the opener to continue after the bottom of the door makes contact with the garage floor basically driving it into the ground until the force required exceeds what the safety system force is set at.
My garage door closes and then opens again.
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.
There may also be loose wire connections inside the button housing itself.
It goes partway down reverses direction and goes back up again.
There are four common problems with garage door sensors three of these homeowners can fix themselves.
You push the button to close the garage door.
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.
Get logic board replacement.
Measure the distance of the gap from the bottom of the.
Before calling on a professional follow these steps.
When the logic board wears out it can cause your garage door to close then open and vice versa without explanation.
Garage door opener keeps going back up.
The symptom of this is a garage door that is in constant motion opening fully then immediately descending only to start the same cycle again.
This brain can wear out in time so you could need a replacement.
Your garage door opens when it hits the ground.
If the garage door does not close completely or begins to close and then opens back up again the down limit switch needs to be adjusted.
Scan the safety sensors.