Open the refrigerator panel on the outside, find the receptacle the fridge is plugged into. It is the first in this circuit, it is the GFCI according to the wiring diagrams.
Pay attention to the front of the fridge, it is probably running on gas right now, due to no 120V to it.
http://www.winnebagoind.com/diagram/2007/07_523b_wire_159090.pdfVery first breaker next to the main, it serves the fridge first (GFCI) then the exterior receptacle, then the galley and lastly the lavatory.
Flag note one next to the fridge recpt says this and everything downstream is GFCI protected, and the fridge breaker is identified in the drawing as RCP-GF1
Charles
'03 Ram 2500 CTD, 5.9HO six speed, PacBrake Exh Brake, std cab, long bed, Leer top and 2008 Bigfoot 25B21RB.. previously (both gone) 2008 Thor/Dutchman Freedom Spirit 180 & 2007 Winnebago View 23H Motorhome.