Pull the emergency release handle down and back towards the garage door opener.
Garage door closes all the way then opens again.
This will disconnect the garage door opener from the door.
If the garage door does not close completely or begins to close and then opens back up again the down limit switch needs.
If the garage door weight and balance are adjusted correctly then spring tension actually holds the door in position and not the opener itself.
By wade shaddy updated december 19 2018 you push the button to close the garage door.
Close the garage door with the opener and watch it closely as it closes.
When the logic board wears out it can cause your garage door to close then open and vice versa without explanation.
For that reason the opener does not have any specific brake or clutch or other door holding function other than the resistance of the motor and the safety systems which typically just reverse the door open.
The garage door will automatically go in reverse whenever it hits an obstruction such as the driveway or ground.
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.
It goes partway down reverses direction and goes back up again.
This brain can wear out in time so you could need a replacement.
Get logic board replacement.
Your garage door s logic board is the brain of your garage door opener.
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.
Close the door with either the door control or the remote control.
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.
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.