Atwood water heater

Question

I have a 10 gallon Atwood gas/electric water heater in my motorhome.
Over the weekend the water would not get very hot, i tried electric and gas. i could hear the gas burner burning and the power dip on electric, it looked and sounded normal. Any ideas on what it could be?

2004 36B Pace arrow Motorhome

Thanks, Jeff.

scottg · Answer

Any chance the outside shower knobs were left on but the head is turned off?

hammer01 · Answer

Nope, i do not have an outside shower. I think its in the water heater, i was hoping someone had a similar problem.

rvbill3 · Answer

If the water heater bypass valve is open (winterizing position), you will actually be mixing hot and cold water and therefore, water will not be very hot. (Maybe a burst of hot at first, then lukewarm). Any chance the valves in and out of the heater were opened, but the bypass valve was not closed?

phays · Answer

Assuming it was working properly and just started acting this way, check to see if you have check valves on the unit.  A bad one on the output side could cause this problem.  Unfortunately, they are on the back side of the tank, usually in a very hard to get to location.

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