There are fuses on the board, located on the back of the fridge , behind the lower vent on the out side of the RV.
There is a black plastic cover that will have to be removed.
If there is more info required , please post the fridge model number.
Do you have the fridge owners manual with the trouble shooting guide?
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.