HAI RC-80 not communicating?

E

elmerbug

Member
Folks,
The new Omnistat controls the furnace just fine, but the OmniLT controller can't control the RC-80. It reports 68 degrees no matter what the real temp is, and changes to the OmniLT never get to the RC-80. How to diagnose this, please?
Thanks,
Don
 
I'm guessing you've checked your cabling.
 

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