There is a breaker under the bed. It is TINY. It will pop and cause the issue you are describing.
If for some reason this does not work, there's another issue you need to know about. Sometimes the converter/inverter will hose up and get confused, and you'll never have more than 11.5 volts on the house batteries and on the display. If this happens, unplug from shore power, do not run generator, and turn off the inverter at the panel at the steps (the red button). Leave it like this for 15 minutes. When you plug it back in and power back on the inverter, it will charge. This threw me and I spent $400 on new house batteries with no idea there was nothing wrong with what I had. Thor was no help, but a call to Xantrex solved it.
Here is the location of that breaker under the bed. Such a bad design! Look for a little bitty red button on it.
