Originally Posted by Mr. Dan
Is your water heater a Suburban or an Atwood?
Surburbans have a switch on the heater itself and generally none inside.
Atwoods has its switch inside with generally none outside.
On the Suburban water heater, it depends on which model, as to how many switches you must make sure are in the ON position to operate the electric heating element. Forest River is incorporating both models in their RV's, which makes it more confusing.
If the SWDE model, then there is only ONE switch to the electric heating element, which is on the face of the water heater itself.
If the SWDEL model, the there is ONE switch on the face of the water heater, but there is also another switch inside the RV which will be right beside the switch that operates the propane side of the water heater. BOTH switches to the electric heating element must be in the ON position for the electric heating element to operate.
Both models are fully explained in this link below:
Suburban's electric switch and much more