crafsman 139.18802 remote
I have two 1/2 HP Crafsman garage door units with two garage doors. I also have the two original remote to open the doors with the dip switches. I set them up so I can open both doors with different buttons on the remote. One of the remotes stopped working. I called Sears and got a compatible 3 button remote 139.18802 with 3 buttons. Followed the instructions that came with it on the first door using the yellow learn button on one of the units. When I pick a button on the remote to program both of my garage doors open. I have tried many times with different buttons on the remote, starting with the other door but can't get just one door to open. My other original remote still works properly. Any ideas??