1998 American Tradition generator transfer switch location

I called Fleetwood it is in the Heart interface control center under the bed if the transfer switch goes bad there is NO serviceable parts must replace the whole control center to new technology at a cost of around 5000.00 . I'm going to test to see if the generator is giving output voltage I got a feeling the circuit breaker went bad it does not reset generator runs but no output to motorhome outlets I did over load by having both airs on when the gen was turned on learned a hard lesson. has anyone changed a breaker on the gen before?