My new (to me) coach has the water heater with heat exchanger, also has the heat exchanger/heater under the bed (and I think also to the dash heater).
On the engine I have 4 valves, I assume 2 control the flow to the water heater and the other 2 to the bedroom/dash heaters. If this is so then I'd like to shut off the bedroom/dash heaters. Does anyone know which is which?
Thanks