Re: Garage Door Opener Syncing Problem
I realize this is an old thread, but I had an issue with this also. I have a Chamberlain HD900D rolling-code Security+ garage door opener. I tried several times to program the thing with no luck. The opener light would even flash after the "learn" process, but the door would not open. Finally, I held the learn button in about 10 seconds until the LED on the opener went out. This clears all remotes associated with the opener. I then tried the Homelink programming on the WK2 again and it worked perfectly. I was able to reprogram all of my other remotes and all is well.
Hopefully this helps someone who might have a similar issue.