Atwood water heater high pitch noise
My Atwood water heater model GC6AA-10E makes a high pitch noise when operating on electric. Is that a sign that the heating element is going bad? (Is producing hot water.) The heating element is on t...
Forum Discussion
Dr Jay wrote:
Winnebago has 2 check valves on the hotwater tank one each on the input and output sides
But not needed unless the system has a hybrid water heater bypass system. Very few OEM's put the check valves in and the ones that do, usually put it on the Input cold inlet. There is no need for the check valves. There are some local Government Plumbing regs that state to have both check valves or even the one. California used to have such a Regulation and RV's built there had to have both check valves. Once California changed the regulation as it relates to RV's, those OEM's stopped installing the check valves, BECAUSE they were tired of customer complaints about the whining sound caused when you have 2 restrictions(2 check valves) on the Water Heaters. Doug
