FURNACE NOT LISTED ON THERMOSTAT
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Forum Discussion
If you have Dometic(2002) Tiffin was using Dometic. I have NEVER seen a upper control board be bad and not show a function. Odds are, the upper control board Furnace DIP switch needs to be turned Off then ON, to verify communication. IF you have had a repair on the front AC recently, then the Installer may not have turned the Furnace DIP switch ON. Doug
