When ever we store our trailer which has an island and the residential fridge in the unit, my DW will open up the doors slightly. She will than place a swimming pool noodle behind the open doors and in front of the shelves. This will keep the doors slightly open to allow air to flow in and out of the fridge. Before we take the trailer out of storage the noodle is removed and the fridge doors are closed so, we can transport the trailer. This does takes a little time to do but while she is doing this I am in the process of getting the trailer set up to tow out of the lot. This works for us.
2016 34RL CC; 2008 Ram Mega Cab 2500HD, 6.7L, 68RFE 6 speed, 4X4, Smarty S67, TDR 135K+miles