Garage Door Closes Then Goes Back Up

My chamberlain garage door opener system 1 2 hp seems to be malfunctioning just recently when the door closes it reaches the floor and then goes all the way back up again after several attempt read more.
Garage door closes 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. Possible reasons why your garage door hits the floor then goes back up. Unless you want to climb up on a ladder numerous times ask someone to. There are four common problems with garage door sensors three of these homeowners can fix.
You come home to find the garage door is up as if someone else had opened your door. Garage door opener keeps going back up. Your travel down setting needs to be adjusted. When i push the remote in my vehicle to close the garage door it will close and remain closed for about a second and then it will open up again.
If the garage door does not close completely or begins to close and then opens back up again the down limit switch needs. Your garage door opens immediately after closing. This requires a simple turn with a screwdriver to reset the limit so the garage door opens and closes all the way again. Your garage door opens when it hits the ground.
Close the garage door with the opener and watch it closely as it closes. The garage door goes down then back up. I have had to resort to disengaging the chain assembly with the lever and have opened the door manually. Here s a rundown of some of the possible reasons this can be happening.
Incorrectly set limit switches may prevent your garage door from closing completely or opening all the way. It may be your garage door sensor. The garage door opener limit switch tells the motor that lifts and lowers the garage door when to stop running. My garage door keeps reversing and will not close.
As you are pulling out of the driveway the garage door closes fully and appears to stop but as the carriage and arm run past the down limit and hits the header bracket it reverses and the door begins to open just as you start driving off down the road. Garage door goes up and sometimes back down by itself.