Originally Posted by Jambr403
I have the Suburban 6 Gallon Water Heater SW6DE installed on my Sabre 320 FQDS and am having trouble with the electric mode with my water heater. LP mode works fine.
I busted out my multi-meter and wire cutters/strippers and determined there is 120V AC at the water heater. However the secondary switch mounted on the front of the water heater has no power.
I don't have an internal wiring diagram of this heater, but I thought the thermostat and hi-cut off switches were downstream from the secondary switch. Is that the case? Any ideas what could be wrong?
Not sure exactly where you are measuring 120 AC voltage at, but if you have voltage at the element, then voltage is going thru the switch.
This FAQ may help, and has a schematic for the 120 volt side.
Suburban's electric switch and much more
The hi-limit thermostats, one for the electric, and one for the propane...are underneath the rubber covers (that you push to reset) as in the pic.
If the water is already hot inside the heater thru the propane/dsi...then you won't have power at the electric element, since the thermostat is open and not letting the circuit complete.