One moment everything was operating, the next, I have no interior lights and the gas water heater won't work since it is electronic ignition. It's hooked to AC power and all the wall outlets are hot. The control panel also does not illuminate? When it happened I didn't have the batteries in it, but after installing them, no change? Checked the breaker panel and all looks good?
Thoughts anyone? Power inverter is the original and is still "humming", but I have not attempted to test if it was operating.