So when we picked up our new to us Mobile Suites it had been winterized.
Been RVing for 33 years and that's something we have never done. See we live in the desert.
Anyway 5th wheel was delivered 1/2 way between dealer & us in Provo Ut. got it at 8:00 at night drove across the street to a KOA connected up to water & such turned on the electric to the water heater & went to bed. Next morning went to put water in the tank before heading out & that's when I found valves open so water tank drain was open. So also there was no water in the heater with electric power on it overnight. Not a good thing to do.
So I think I damaged the electric side of the water heater. I remember having this problem way back on a TT we had in the 90's. I just don't remember how I diagnosed it & what I replaced.
Oh it does work fine on propane.