You push the button to close the garage door.
Garage door goes back up when it hits the ground.
I also show how to lock the garage door opener to disa.
Your concrete floormay have lifted so look at that.
Look for two screws on the motor base.
This issue happens less often than a blocked or off track sensor.
Possible reasons why your garage door hits the floor then goes 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.
This is so it won t crush a kid or a person if they happed to be under the garage door when it closes.
This is almost always the result of a dirty or obstructed safety feature.
In this video i show in detail how to get your garage to stay shut if it continues to bounce back up.
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.
To get it to stay down once it hits the ground i push the button on the remote again and it stays down.
Your travel down setting needs to be adjusted.
Garage doors have a pressure sensitive mechanism on them for safety reasons.
It goes partway down reverses direction and goes back up again.
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.
In this case the garage door opener detects that it is coming into contact with.
This is referred to as grounding.
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.
Here s a rundown of some of the possible reasons this can be happening.
The garage door will automatically go in reverse whenever it hits an obstruction such as the driveway or ground.
As is the case with so many issues at the home there s no one reason why your garage door closes then opens.