If i remember correctly earlier builds had a MIN / MAX value for fridge temp which seems missing in newer builds. I liked those as when i am doing a coldcrash i worry that my compressor is pushed to hard if it is allowed to go for example 10 degrees lower than my cold crash temp at zero degrees. I now that i am able to change the max diff to for example 2 degrees but that will make the process to get down to zero much slower.