Having owned an rv fridge for over two Years. I can honestly say I do not understand it. 12 cu. ft. Model.
What works is time. Turned on ,24 hours before needed. Fill with lots of cold stuff plus 2-3 jugs of frozen water. Small d cell fan. Leave an open area thru top to bottom. No boxes in the middle of racks.
Ignore temp readings another 24 hours and it works swell.
Issue: Freezer was fine, but fridge was still too warm after 3 hours on.
Fix: Turn fridge on night before needed.
And here I thought everyone knew to turn on the refrigerator 12-24 hours in advance. And if it's an absorption type, make sure it's fairly level.
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2019 Silverado LTZ 1500 6.2L 10 Speed 3.42 Max Trailering Package
2018 Freedom Express 192RBS
2022 Highland Ridge Open Air Lite Range 17BH