We have an Atwood water heater, model G6A-8E. I can get it to run perfectly well off LP, but when we are hooked up to power I'd like to use that instead. I believe this model can run off of either but so far we have been unable to get it going with electric. To start it on LP all I do is turn the LP to "on" on the indicator panel, no switches to switch, it just does its own thing and fires up. There are two toggle switches that we suspect have something to do with engaging the electric, but flipping them has no effect on the water tank. One is on the unit under the sink, and one is on the side of the cabinet. The dealer said the latter was to use electric but alas, it does nothing. We have considered that we may need to replace the coil, but there does not appear to be even an attempt on the machine's part to start electrically. Pics of switches below: