Sorry Shane, you're getting things confused between Inverter and Converter.
OP is asking about the Inverter which runs the Res Fridge.
The Inverter is Hardwired directly to the Batteries if it's RW Supplied.
To the OP, have you checked the Inverter it's self?? There are two switches on it, think one is for AC, the other DC, make sure it didn't get switched off at the main unit.
Michelle & Ann
2018 Chevy 3500HD Crew Cab High Country DRW, D/A, 2016 RW39MB, Dual ACs, Auto Level, Auto Sat Dish, Stack W/D, King Sleep #, 17.5" Sailuns w/Disc, MORryde IS & Pin, Comfort Ride Hitch, 5.5 Onan, Res Fridge & Induction Cook Top