Most likely there is an obstruction or motor sensitivity is incorrect.
Garage door keeps bouncing back up.
Try the door and if it still re opens turn the same dial another complete revolution.
Bad pillow block bearing on torsion tube.
Your travel down setting needs to be adjusted.
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.
Missing wheels on door rollers.
Check how door operates in manual mode and run it up and down by hand feeling for heavy weight grabbing or binding points.
Here s a rundown of some of the possible reasons this can be happening.
Leaves twigs stuck on bottom section breaking beam.
It goes partway down reverses direction and goes back up again.
A careless or rushed parking job can cause the car s bumper to block the sensor.
The two dials may have a picture of a house with a garage door next to them.
Your garage door sensor works by having two photo sensitive devices on either side of the garage door.
Bad top oilite bearing just under drive sprocket on opener power head.
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.
If you find that your garage door is reversing before even hitting the floor then it could be possible that there is a problem with the close force setting.
This setting basically controls how much force is allowed when closing the garage door.
Sometimes it can be torsion springs have relaxed some of its tension and door has become too heavy.
You push the button to close the garage door.
This is almost always the result of a dirty or obstructed safety feature.