Flashing green LED light on garage door opener
The green LED light on my Craftsman garage door opener (I don't know the model number off hand, but I've had it for several years, the wall unit only has the button to open/close, a lock button and a light button and the remote has 3 rectangular button-2 about an inch long and 1 two inches long with a green transmitter light) is flashing rapidly. I tried pressing the green button quickly and holding it down for several seconds (more than 10) but it won't stop flashing.
The other day I found an old remote and I pressed it (that was stupid!) That caused my "new" remote to stop functioning. I re-programmed while the green light on the opener was still flashing and my remote was able to work. The problem was that my door was opening and closing from all of my neighbors remotes! What can I do? I can't find the manual.