thanks! I filled the tank, after changing the swiss cheese anode rod. the water heater lights very easily, and the water gets hot. but turning the inside switch to on seems to have no effect. thanks so much for the manual link, I'm going to read it more carefully to see if I'm missing a step. I suspect though that the switch isn't hooked up to the water heater, because the water heater doesn't have the electronics. the heater model is SW6P. because it is so easy to light, I'm not terribly disappointed if it won't light from inside.
OK, I see from the manual that our serial # is too early to have the re-igniter option.
the one thing our new little camper does not have is the manuals to all it is equipped with. I realize most of the things they install are common to most RVs and manuals can be found on line. but still the owners packet is sure nice to have.