So I just started having this problem about 4-5 weeks ago. I went to pour a beer and it acted like it blew. So I reach inside to pull the "empty" keg out and low and behold, there's still at least a gallon or more in it, judging by the weight. Turns out it was frozen. Flash forward to yesterday, it does the same thing on a newer IPA. It's only the keg in the back left hand corner that's freezing. So I've tried to dial up the temp a little bit, but then that throws my regulator off, since things are a couple degrees warmer. Anyone ever heard of anything like this?? Any suggestions?
I've only had the two kegs freeze, but they were both in the same position, back left hand corner of the serving fridge. I haven't really messed with the thermostat very much, and I've been homebrewing for almost two years and have always used this as the serving fridge without this issue. I have had four kegs in there consistently for over a year as well...weird