I added a fridge fan switch under the TM near the HW drain ( added a water proof box ) This allows me to control the fridge ( shells closed) fan without opening. I then open partially close the fridge door and put fridge on AC and close up. The night before, I plug in to shore power and flip second fan switch. I am not a big fan of leaving the fridge closed and not on. You can never get it really dry after returning home and closing it completely may result in mold and musty odor.
Remember all the water tanks( HW, Thetford, fresh) is about 240 additional lbs.
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