Are the breakers tripped on the generator? there are two in the front. I don't think you have a transfer switch (my National RV dosen't). Is your power cord plugged into the socket in the power cord bay? That's where the Elec. from the generator goes. And the power cord needs to be plugged into for the RV to get power from the generator.
As to the refrigerator do you see any yellow color on the back of the refrigerator when you take the outside door off. Your cooling unit may have gone south and needs to be replaced.
I think you have 2 different problems going here.
