02-25-2026, 02:43 PM
Jeff - I may be full of hot water on this one and if I am I will delete this opinion.
It was my understanding the the valves the OP turned off were a supply and return for one circuit to the AH and the other circuit to the dash heat. I used to turn of the two to the dash in an effort to not leak any heat into the dash when I was using the dash A/C. There certainly is a circuit from an Aqua Hot zone that can be selected to heat the engine but I though that was separate from the manifold valves Newell had them close.
Maybe someone else can weight in on this. Russ
It was my understanding the the valves the OP turned off were a supply and return for one circuit to the AH and the other circuit to the dash heat. I used to turn of the two to the dash in an effort to not leak any heat into the dash when I was using the dash A/C. There certainly is a circuit from an Aqua Hot zone that can be selected to heat the engine but I though that was separate from the manifold valves Newell had them close.
Maybe someone else can weight in on this. Russ
Russ White
2016 Winnebago Vista LX 30T
#530 ( Sold )
1999 45' Double Slide - Factory upgrade 2004