Yup, sounds like dieselguy has it right. He pretty much described how those switches on my '06 work. Does the interior switch also have a red lamp? If so, the lamp should turn out signifying the pilot for the water heater is lit (runs off the battery and propane for boondocking). If the interior indicator remains on then the water heater's pilot is not coming on. However, don't fret, the outside switch will work and means that water will be heated by 110v, if connected to shore power. In either case, MAKE SURE the water supply is turned on and the water heater is full or you may burn the filaments out!
How does one make sure the water heater is full? Turn on the water supply, wait a few minutes for the water heater to fill, then turn on each hot water tap (sink, lavatory and even the shower). Turn on each hot water knob until they stop spitting air and flow smoothly. Then turn on the water heater method you desire (propane, 110v or both). You'll need to wait another while longer for the water to get hot. Using both heat methods speeds up the heating process.
|