I don't have access to our coach right now but I'm fairly sure the t-stat only functioned when shore power was applied. Couple of times when we moved campgrounds, the furnace kicked on immediately when the shore power cable was plugged in. Time will tell I guess.
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Jim
2018 Cougar 32RLI
Hercules H-901 tires
CRE3000 w/wet bolts
2021 F-350 4x4 7.3L Godzilla Crew Cab
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