Well, we have been in our spot for close to 3 weeks and I thought I would tackle why my gas side isn't working. I turned off the electric heater, turned on the gas heater and listened. I did NOT hear a sound out of the gas valve, but the ignitor did try to fire off the heater. The heater is an Atwood Model GC10A-4E I did a continuity test on the 2 amp fuse for the module, and it is good. There's also a fusible link that tests good but the contacts were a bit corroded. I had read somewhere about replacing the module with a barracuda brand module. I have not been able to google that brand of module.
The electric side of the hot water heater has seemed to have quit heating also. We had super hot water on that side. I don't see anywhere on the heater where the electric element would be located. Also, would it be worth replacing the thermostat board? They appear to be fairly inexpensive.