You push the button to close the garage door.
Garage door opener goes down a little then back up.
Your travel down setting needs to be adjusted.
It goes partway down reverses direction and goes back up again.
You might consider calling a local garage door company to come and debug it for you.
There may be two nuts on one track.
Your garage door sensor works by having two photo sensitive devices on either side of the garage door.
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.
A careless or rushed parking job can cause the car s bumper to block the sensor.
If these can t see each other when the door is almost shut it will send a signal to the garage door motor to open back up.
This is almost always the result of a dirty or obstructed safety feature.
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.
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.
Garage door only travels a little way and then reverses does your garage door only travel a little way 6 inches or so and then reverse.
One for the opening limit and one for the closing limit.
Sometimes the sensors will be in alignment and just as the door gets close to being shut it will vibrate enough to push one sensor off.
When the opener reverses the screw turns the opposite way and the nut travels back.
If the door seems okay there may be a problem with the trolley or the opener itself.
By adjusting the starting position of whichever nut the opening and closing limits are set.
Try running the opener with the door still disconnected.
Here s a rundown of some of the possible reasons this can be happening.
The garage door will automatically go in reverse.
Possible reasons why your garage door hits the floor then goes back up as is the case with so many issues at the home there s no one reason why your garage door closes then opens.
If the door had hit a stop it would not have reversed.
If it moves all the way up now then the trolley should be okay.
If the door reverses and the lights blink 10 times there s still a problem with the sensors or something tripped them on the way down.
