I have the same problem. A bit different setup though. I have the Harmony 890 remote and a dual tuner dish network 322 reciever. Tuner 1 is IR, Tuner 2 (for another room) is UHF. Tuner 1 is set up fine on my remote, but Tuner 2 will not work with IR.

Dish says I would have to buy two seperate dish recievers in order to use my harmony remote for my other room . Mabye someone can hack the Z wave function to control the UHF dish reciever? If you find anything, please let me know too! jmkbrudvig@yahoo.com

One other thing, my dish remote has a little removable tab at the bottom (blue or green). Take the battery cover off, and pull the colored little tag and turn it around. I think some older remotes do not have this feature.

Sorry I couldn't actually help you.