As is the case with so many issues at the home there s no one reason why your garage door closes then opens.
Linear garage door closes then opens again.
The garage door will automatically go in reverse whenever it hits an obstruction such as the driveway or ground.
It goes partway down reverses direction and goes back up again.
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.
If the garage door does not close completely or begins to close and then opens back up again the down limit switch needs.
In this case the garage door opener detects that it is coming into contact with the driveway or the ground and immediately switches into reverse and raises back up as a safety mechanism.
Close the garage door with the opener and watch it closely as it closes.
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.
Try to close the garage door.
If you re craftsman chamberlain etc garage door opener is closing and then opening up its likely a common problem related to the stop limit mechanism.
Turn the down limit switch screw clockwise one turn with a flat blade screwdriver if the garage door closes and then begins to open back up.
If your garage door won t open or close the problem could be a bent track a broken torsion spring or a bad capacitor int he motor housing.
If you are having problems closing the garage door please che.
This is almost always the result of a dirty or obstructed safety feature.
You push the button to close the garage door.
As these wires short against the housing the electrical impulse causes the door opener to activate.
If it closes only partway the safety sensors are usually responsible clean the lenses or realign them and make sure there are no obstacles blocking the beam.
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.
This video is for a linear garage door opener.
There may also be loose wire connections inside the button housing itself.
Your garage door is programmed to travel a certain distance before it closes.
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.