Converted fridge fermenter question

[Jcoz]

I have a dual stage temp controller with a fridge hooked up to it at the normal plug, I was about to cold crash a couple carboys full of beer when I realized that the fridge still has an internal controller...how cold is the coldest setting on a fridge normally?

How can I override that controller?

 

[FirstStateBrewer]

Just turn the internal controller to it's coldest setting. That will usually take it down to freezing.