As is the case with so many issues at the home there s no one reason why your garage door closes then opens.
Garage door closes slightly.
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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.
This is almost always the result of a dirty or obstructed safety feature.
You push the button to close the garage door.
It is possible that the vertical track down the side has gone out of alignment and shifted due to a slightly loose lag screw.
You may think the door is workingok because it feels ok but you should still check all components to be sure.
The garage door opener limit switch tells the motor that lifts and lowers the garage door when to stop running.
Once the spring is free of tension remove from its track hanger.
They can also cause the ope.
If it was opening too quickly move it to the next lower hole.
Do any necessary repairs reconnect the opener and try it out.
Here s a rundown of some of the possible reasons this can be happening.
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.
It goes partway down reverses direction and goes back up again.
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.
If the door was closing too quickly move the spring to the next higher hole on the bracket.
3move the spring within the track hanger.
The close limit switch may need adjusting.
To avoid injury make sure the spring is completely free of tension before removing.
By pushing the door back into position you should have made the vertical track straighten.
Your travel down setting needs to be adjusted.
Push the door push the door back to adjust the door and get the center aligned again.
Incorrectly set limit switches may prevent your garage door from closing completely or opening all the way.
Your garage door is programmed to travel a certain distance before it closes.