Here s a rundown of some of the possible reasons this can be happening.
Garage door closes slightly.
3move the spring within the track hanger.
My garage door comes down slightly and then goes back up in the other scenario when the garage door opens it goes up a foot returns to the floor goes up a foot so i have to jump out of the car and force it to open all the way don t know if i should get a new opener or what.
You may think the door is workingok because it feels ok but you should still check all components to be sure.
Your garage door is programmed to travel a certain distance before it closes.
It is possible that the vertical track down the side has gone out of alignment and shifted due to a slightly loose lag screw.
Garage door won t close all the way if the garage door opens correctly but fails to close completely there may be one of three common causes.
Incorrectly set limit switches may prevent your garage door from closing completely or opening all the way.
Your travel down setting needs to be adjusted.
Once the spring is free of tension remove from its track hanger.
If you stillare having problems you can make slight adjustments to either the closingforce opening force or the travel limit adjustments.
To avoid injury make sure the spring is completely free of tension before removing.
They can also cause the ope.
If it was opening too quickly move it to the next lower hole.
The close limit switch may need adjusting.
It goes partway down reverses direction and goes back up again.
If the door was closing too quickly move the spring to the next higher hole on the bracket.
Push the door push the door back to adjust the door and get the center aligned again.
As is the case with so many issues at the home there s no one reason why your garage door closes then opens.
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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.
Do any necessary repairs reconnect the opener and try it out.
Your garage door has set limit switches that instruct the motor when to stop running both when it is opening and when it is closing.
By pushing the door back into position you should have made the vertical track straighten.