What a great forum and great contributors. I pulled the control knobs and there they were deep in the plastic recesses of the knob tunnel; two screws holding the faceplate on as in the picture below. Once the faceplate came off there was the control module held with two easy to access screws. Once removed the module should be able to be removed, however, in an apparent austerity move in DGR, they used VERY short wires to run from the module back to a connection post. Thus, I could only move the module about an inch, not enough to see behind it. The little I did see suggests it is a plastic module which can be taken apart by removing three screws on the top of the module thus exposing the board, IF the module could be moved forward 2-3 inches OR if the refrigerator is out of the RV. The wires are on the connection post are held down with screws which can only be removed if the unit is out of the RV.
Darn, I was so close, but I now know to have the dealer look for the fuse while I am present before going on to replacing the heater element.