try holding the channel button for three seconds to reset ?
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No Remote Temperature on Desk Set
What I findly did was take out the batteries, unplug the power to desk set and let it set for about 10 minutes. I think there maybe capacitors in there that needed to drain down. Anyway, it now works properly no! I think it just needed to unscramble it's brain and get back to its eprom. Oh, I also put in new batteries since the old ones were around 1.4v. Hope this will help someone.