Thanks, Gene. Good to hear from you too!
I put an Ohm meter on the plug from the power board of the refrigerator. Both terminals to the ground plug one at a time. My lowest setting was 100 Ohm so I can't tell exactly what was happening but I would say a reading of 0 to 1 so it was not definitive.
I plugged the refrig AC cord directly into an extension cable and into the barn GFI outlet. The GFI blew as soon as I pushed the refrigerator switch to auto, the "On light" went out. No error flash since it lost power. Strange, I thought the 12 volt might power a message. The barn doesn't have a non GFI outlet so I'll have to wait to get elsewhere to perform that test.
I agree all signs are that the AC heater unit or power board has a short. Has anyone replaced that part themselves? My search here and on google has not found much except a service manual on the Bryantrv.com site.
Tony