On mine, the rocker switch in the hallway turns on the gas side of the water heater. The outside rocker switch disables the electric operation. I never fool with the outside switch but if I want to disable the electric I kill it at the breaker. My guess is the hotwater you felt was residual as these things hold heat for a long time. On a side note you can use gas and electric at the same time. Some call it turbo heating. Comes in handy when two showers are needed in a short period of time. Jim
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2006 3000RK
2009 Ram 2500
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