I take it no lights in the fridge when you opened the door.

My 2017 Southwind has a breaker that supplies power to the fridge.Might check that ,also check that the house battery connect switch is on, you should have a house battery switch and a chassis battery switch.

Thank you.  Found it. It was the rest button hidden behind a wiring harness.  Pressed it until light came on.  Oh so simple.  Thanks again.