I know Shane, we picked up our van a few days before Xmas last year and on Boxing day noticed the fridge temp going up and water dripping from the over flow and the fridge would not kick on, amazingly got hold of a fridgie that day and he had no idea and like you came it back on.
After Xmas holidays he changed the top panel then the thermostat and Waeco Australia didn't even know, then after a few months he sent me the defrost cycle it goes into which I would like to disconnect some how as in summer the fridge temp goes up especially with kids opening the door, you can reset it by disconnecting the power so I may put a heavy duty switch in the top vents so I can reset easy.
I think a lot of people don't notice it as you need a digital gauge to really pick up on it.
Christian