Two possible problems can lead to a garage door reversing before it even touches the floor.
Chamberlain garage door opener will not stay shut.
Measure the distance of the gap from the bottom of the garage door to the driveway or floor if the garage door will not close completely.
Garage door reverses before hitting the floor.
Chamberlain garage door openers troubleshooting support find the chamberlain garage door opener technical support you need to get your garage door opener operational.
If your garage door is not balanced your garage door opener will not function.
This quick video will tell yo.
Motor unit assembly parts rail assembly parts and installation parts for chamberlain chain drive garage door opener models 6200 6200 2 6200 2k 6200c 2k 6200 2db chamberlain 2200 2200c repair parts list and diagrams.
However if the door continues to bounce back open after rotating the screw four or five complete turns you could have a damaged limit switch assembly.
Not sure what button to adjust up or down to correct this problem.
When i close the garage door it goes down to the bottom barely touching the cement and comes back up.
From informational videos to product manuals and troubleshooting articles the chamberlain group resource library has the information you need.
The measurement will be used to reset the down limit switch.
Trouble shooting a garage door that won t stay closed.
Disconnect your chamberlain garage door opener from the garage door by pulling the emergency release handle down and back towards the garage door.
It s frustrating to have a garage door that won t stay closed.
It s time to investigate the problem.
If you ve got a chamberlain liftmaster or craftsman garage door opener.
If you could provide me with the make and model of your garage door opener i should be able to get you a specific answer about your garage door not staying closed.
Follow these steps to troubleshoot your garage door.
Adjusting the limit travel setting.
Make sure your garage door is closed.