Hi. I have a Liebert challenger 3000 HVAC system in my museum. We are typically stable at 72 degrees F and 40% RH. For reasons I do not understand, today we are at 81 degrees F and 78% RH (which, as you might expect, is very, very bad for our historical collections). The HVAC is chugging away and trying to dehumidify, but the RH isn't going down. If anyone could give me some advice as to (A) why this might have happened and (B) how to fix it (yes, I have called in our service group, but quite honestly, they haven't been that helpful in the past) or otherwise help the situation, that would be great.