The same situation occurs when running the generator. With Shore Power removed, I crank the gen. Go to the FireFly control panel and select COOLING. Nothing occurs. (Same as if on Shore Power). Hence, I tend NOT to believe it is a dogbone/wiring issue. (I also tried HEAT PUMP...nothing). But, I can turn on the furnace, lights, move the slide, etc.
Maybe the ATS is malfunctioning????? Does this mean a trip to a Thor dealer?
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