I was adding a fan on my refrigerator and noted some bare wood at the bottom (I think plywood) and noted some separation and raw Styrofoam insulation, it had been wet. I cleaned it and covered with aluminum tape. I thought I would pass this on so others can check and see if theirs needs some attention. I have the Norcold Polar Max 2118 but it may be an issue in any model. You need to pull the outside cover and look at the floor and up the sides. I took these when I had almost finished so you had an idea of what I'm trying to explain.
RAW EDGE Almost covered
2017 Durango Gold G353RKT 2015 F350 Lariat CC SRW 4X4FX