Wow, sounds like you should have done Camp Driveway first, before going camping.
Did the dealer give you a walk through because the WH electric/propane functions should have been covered.
The inside red switch is for the propane side. Electric is outside on WH.
As far as a/c, were you hooked up to 30 amp shore power or 110v power?
and Zoe the Wonder Dog(R.I.P.)
'07 Roo 23SS pushing an '07 Chevy Avalanche
Equalizer WDH and Prodigy BC