Hi again folks, so My Class A has "heated waste tanks" as labeled on the waste tank compartment door. I'm trying to figure out how this works. there's no on\off switch that I can find anywhere . ...
Don't know about your particular coach but on many they split the furnace duct work in the bedroom in half. Half goes to the sewage bay and half goes to the bedroom. Makes for a cold bedroom in some RV's.
Look on the side or on top of your sewage bay for an opening. In actuality the ones that are heated this way only keep the valves from freezing not the entire tank.:( That's how it is on my MH.