Water Heater Control (Electric and Gas)??

Old-Biscuit wrote:
Two separate controls.......each has their own set of t-stats
One set for electric (120V AC) and one set for LP Gas (12V DC)
The T-stats are mounted next to each other with High Limit on top and normal on bottom (Normal set for 130*F...High set for 180*F) Each High Limit has a 'reset button' which will trip power if high temp limit is reached (normal has failed etc.)

Both sources for heating can be ON for faster recovery
OR you can use just electric Or use just LP.

I'm surprised that there is just the one electric ON switch (outside compartment)....check under sink or monitor panel for another switch.
Thought that Suburban would have another switch by now......one switch is so old tech.

Just make sure that water heater tank is full of water before turning on that outside compartment switch...otherwise the element will burn out quickly as in just a few minutes.

My '07 has exactly what the OP is describing, one switch inside, marked DSI (direct spark ignition)for the propane & one switch out side on the unit it's self for electric, I know it's no longer new, but it's not that old.