Refrigerator

All Norcold cooling units, so I was told by Norcold, defrost themselves every 46 hours. The temp in the freezer and refrigerator will rise and then start cooling down again after the defrost. This is not a freezer defrost, but just a temporary increase in the freezer temp as the cooling unit defrosts itself. My freezer will increase 8-9 degrees during this process and is completely normal operation.

I suggest you put a wireless temp sensor in your freezer and watch it without opening the door. I'll bet you are just seeing the 46 hour defrost cycle.