I remember that feeling all to well.
If the temperature inside the fridge is where it's supposed to be, it's probably the door switch not making full contact. We had one years ago where the doors weren't properly aligned. It's worth a try.
2013 RAM 3500 Dually Longhorn
2014 Trilogy 3650RL, W/D, Onan 5500, 8000# Axles, IS, 960 Watt Solar, 6x6 Volt Battery Bank, Freedom SW 3012 Inv/Charger