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.
Sears garage door opener closes then opens again.
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.
Then during some cold winter day.
Your garage door s logic board is the brain of your garage door opener.
If the garage door fully opens or closes you are done.
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.
Operate your garage door opener.
These may be metal plates screwed on to the chain plastic snap ons dojiggies with flexible metal arms attached etc.
There will be two on the chain one for the opening limit and another for the closing limit.
Until a year or so ago we never had a problem with it.
Erase all codes in your remote and then reprogram it.
Get logic board replacement.
As these wires short against the housing the electrical impulse causes the door opener to activate.
When the logic board wears out it can cause your garage door to close then open and vice versa without explanation.
It is important to perform the safety reversing test after adjusting the force settings.
When your garage door opens or closes when you haven t triggered the remote one possible cause is that a neighbor s remote was programmed at the same time as yours.
You have to keep adjusting till the garage door opens or closes fully without reversing.
Else repeat the process once again.
There may also be loose wire connections inside the button housing itself.
Close the garage door with the opener and watch it closely as it closes.
Hi in 2002 we purchased and had installed a craftsman 1 2 hp garage door opener model 139 53965srt.
Look for trip arms or clips attached to the opener chain.