Heat & A/C on at the same time!
My SIL just bought a used 5th wheel. When she recently went to turn on the heat she noticed immediately that the heat AND the a/c came on together and they were both blowing from the vents in the roo...
Forum Discussion
Perhaps it's like mine. My T-sat has a selection for 'Furnace' and in that case the furnace will come on and blow out of the lower furnace ducts. Also, I can select 'Auto' and in that case if the T-stat calls for heat the AC comes on and works as a heat pump blowing warm air out the upper AC ducts. If the trailer is warmer than the set temperature the AC blows cold air out of the same upper duct.
