I am trying to cold crash a summer ale for the first time. No matter what I can't get the fridge much below 40. It's a sayno mini fridge and i built stc-1000 for a controller. The dial on the inside for temp control i have set to the coldest setting. The fridge does not have a freezer. Anyone have ideas? Does this sound like the fridge is only designed to go this cold? In the back it does have some Ice build up. I can't really mess with it now cause I'm still cold crashing.