Garage Door Closes Then Opens Liftmaster

If the garage door does not close completely or begins to close and then opens back up again the down limit switch needs.

Garage door closes then opens liftmaster.

This will cause the trolley to move into position and reconnect to the garage door. Your garage door is programmed to travel a certain distance before it closes. Close the garage door with the opener and watch it closely as it closes. Always keep garage door in sight until completely closed.

I hit the control agian and sometimes it will go back down and raise agian and read more. Anytime the main light flashes 10 times and the door reverses to the open position it is a door sensor problem. Now press the remote control. Tweak them a bit.

The opener s force setting may not be set correctly. Make sure the small light on each sensor is lit and not flickering. As is the case with so many issues at the home there s no one reason why your garage door closes then opens. Liftmaster uses the protector system which projects an invisible light beam across the door opening and automatically opens the door if something someone crosses it s path.

The force setting tells the opener how much resistance the door should provide and if the opener detects more than is allowed the door will reverse. Try opening the garage door with the remote and see what happens. Chamberlain liftmaster professional 1 2 hp garage door opener that tends to open part way say 12 inches or so then stop. Never permit anyone to cross path of moving door.

Here s a rundown of some of the possible reasons this can be happening. To reconnect the garage door to your liftmaster garage door opener manually close the garage door pull the emergency release handle down. Your travel down setting needs to be adjusted.