Similar problems with same model frig. Seems to be initiated when defrost mode kicks in. I saw on a post somewhere that someone turns there frig. off for a few minutes every morning to avoid the defrost cycle. Would there be a negative side to this? My frig. came with 4 exterior fans from the factory but no baffle and a big hot air dead space over the frig. I insulated the dead space and put in a baffle but still had over 40 degrees for a couple of hours today with temp. of 46. Dometic says add 2 more fans.