I have a Northtrail 32 BUDS with an outdoor kitchen. It has refrigerator that runs on shore power. I am concerned about closing the outside door when we are gone for the day with the refrigerator running. Will this cause overheating and possibly lead to a fire? I don't want to leave the outside door up as we have a TV in the outdoor kitchen area and I would not want anyone to help themselves to the contents of the refrigerator.