The generator doesn't directly power the inverter - it provides power to the main power panel (aka load center or "breaker box"). The inverter gets its 120vac power from there, just as it does when the coach is plugged to shore power. And the inverter gets its DC power direct from the house batteries.
If the inverter isn't supply power to some circuits but other 120v circuits work, the problem is the circuit breaker built into the inverter. If you have no 120v power anywhere
in the coach, then there are three possibilities:
- The breaker on the generator itself has tripped
- The auto-transfer-switch (ATS) is not switching from shore to generator power (faulty ATS)
- The main breaker in the load center has tripped
sorry - I'm not familiar with your coach so do don't know where the breaker panel is located.