Two possible issues one is hyper common (That's beyond very) the other not so much (Make it 3)
Do the inside lights in the RV work? (DO you have 12 volts present) The fridge runs on Propane or 120vac but the indicator lights and the controls are all 12 volt DC if there is no 12 VDC no joy. Dead battery or battery disconnect.
On the less common is blown fuses (There may be a panel in the bottom of the outside compartment with two 3AG type glass fuses... or 3 one of them MIGHT be 12Volt the others are 120 there is also a black box. likely on the left at the bottom it too has fuses inside)
2nd is a bad connection (Bit me once) there is a multi pin cable between the afore mentioned black box and the "Eyebrow" (The bar with the lights and buttons)
Unplug and replug a few times. then inside pull the "Eyebrow" straight out and do the same thign with that end.
Good luck and let us know whaty happens;
