Need some more information
What is the MH, What chassis.
I would start with, is your house battery dead?
If you have a house battery disconnect, is it connected?
Ods are good that your genny starts from the house battery (most do), so if the house battery is dead or not connected, that would explain it.
ALSO - Kudos to your converter if its got enough umph to crank the genny.
2001 Coachmen Mirada (Ford F53 6.8L V10) - Toad 2003 Saturn Vue.
It won't do MACH 2, but I can get a sandwich and take a pee.