Never underestimate the heat capacity of 7.5 gallons of beer
I placed a carboy of ~4.6 gallons of Saison wort in my freezer on Monday night, attached the temperature probe to the side of the carboy, and set the temperature controller to 68 deg. F. Also in the freezer were two kegs with ~7.5 gallons of beer at 34 deg. F.
The freezer kicked in, cooled the Saison wort until it was 68, and shut off. So far, so good. I went to bed.
Tuesday morning, the temperature of the Saison wort was 61! I don't know if it would have gone down further because I promptly removed the kegs from the freezer and left the door open so the Saison could warm up to 68.
Physics. Whodda thunk? Clearly, I didn't .
On Deck: Jamil's Vanilla Robust Porter
Fermenting: Orange Blossom Mead
Kegs: Element 56 Pale Ale, Ron's Belgian Blonde, Summer'n Saison, Furloughktoberfest '09, Grateful Pale Ale, Sam Adams Cream Stout Clone, EdWort's Apfelwein