I have 2 garage doors, operating by remotes, push button, and keypad. One goes up and down perfectly; the other goes up with no trouble, but won't go down without stalling and going back up many times. The only way to close it is to push the push button over and over, every time it starts back up. I checked the safety lights and they are not the problem.

Building Materials - Genie Company - Garage Door Parts Genie Gwkp Digital Wirelss Keypad