Thanks for the replies so far!

wrote:
The stop adjustment for the closed state of the door
is out of adjustment. Make your door stop earlier.

I might not have described what it does very well.

If I push the button on the remote control or on the wall control, it
starts going down, then immedaitely stops and goes right back up. It
doesn't go down more than an inch or two before stopping and coming
back up.