Possible reasons why your garage door hits the floor then goes back up.
Garage door goes back up when it hits the ground.
Your travel down setting needs to be adjusted.
This issue happens less often than a blocked or off track sensor.
When i use the remote or wall button to close my garage door as soon as it hits the ground it goes right back up.
If it looks like your motor is forcing the door into the ground and going back up again then there are a few reasons that his might be happening.
Garage doors have a pressure sensitive mechanism on them for safety reasons.
This is almost always the result of a dirty or obstructed safety feature.
If this is set too short your garage door may not shut all the way or it may slam hard on the ground and go 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.
There may be another sensor near the motor that tells the unit how far to let the garage door go down.
It goes partway down reverses direction and goes back up again.
You push the button to close the garage door.
What is probably causing your problem is that the switch that gets tripped when your garage door closes is too far forward allowing it to hit the ground before it trips the switch to stop the garage door.
I also show how to lock the garage door opener to disa.
To get it to stay down once it hits the ground i push the button on the remote again and it stays down.
Look for two screws on the motor base.
This is so it won t crush a kid or a person if they happed to be under the garage door when it closes.
My garage door hits the ground then goes back up again.
Here s a rundown of some of the possible reasons this can be happening.
Your concrete floormay have lifted so look at that.
In this case the garage door opener detects that it is coming into contact with.
This is referred to as grounding.