Hi OhioSnow,
Welcome to the Heartland Owners Forum and Family. We have a great bunch of people here with lots of information and all willing to share their knowledge if needed.
Seems there was a post about this a week or so back. You might do a search and check it out. But I think, if I remember right, that when you press the 9 key and hold to wait for light to stay on... it does not,,, I think you press 9 key and it blinks twice...and then you need to enter new code before it blinks a gain. Do a search if this does not work. And someone from the factory will jump in here soon.
Enjoy the forum.
Jim M