If your fridge is a 2-way, then try it in Propane mode. If that doesn't work either, then your fridge circuit control board could be bad. So, before going to the circuit board, go outside and behind the fridge. Remove the exterior weather cover behind the fridge, and check that you have 110-VAC at the receptacle that the fridge is plugged into. If the voltage is there when the fridge is unplugged, then you have a fridge problem overloading the 110-VAC of the RV.