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Upstatemax
I have a new air 280. Water has been known to accumulate around the cooling unit and plate against the backs of these units. Take a look when you grab a cigar and wipe it down if necessary, as others stated there isnt much reason to be running higher than 65rh unless you want to age for several years (5+). It can help to keep dry litter or beads at the bottom where humidity accumulates.
Also, the cedar sleeves on Queen Bee's and other Fuente products are infamous for mold growth due to their lack of breathability. I personally leave all of mine on but removing them may help in the future if you absolutely have to run closer to 70rh.
Hope that helps, gl!