Kind of odd that those Coleman-Mach thermostats are used in many different RVs, and most of them would all have the same fan problem. When I go to RV shows, they are in most of the (lower cost) motorhomes (not sure about 5'ers or tt's as I don't go into many of those).
I don't know if a residential thermostat will work as it would have to control two different units rather than a combo A/C-furnace.
I suppose it's just another example of "good enough" from the RV industry.
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The only thing that works on a RV is the owner...
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