Tried the 310T model of the inkbird for the past few months all was well, I liked the ability to program in the fermentation temp rise after x days for when I am traveling.
For the past couple of weeks had been just using it to keep the chest freezer at 40 deg to store some bottles of Irish red and a few cans of Diet Coke left over from god knows when…,…
Came home from a 5 day trip to Chicago and looked in, seemed like it was kind of warm in there, and the bottom of the freezer had what was found to be Diet Coke from two leaking cans. (I was just so very thankful it was not my Irish red). So it must have gotten cold enough to freeze the cans and start a small leak (they both were still half full). I played around with it and found that when I caused it to switch to heat, the temp reading would go all over the place (like -4F and bounce all around like an open circuit).
So I reverted back to my old original Inkbird 308 which has served me well for the past couple of years. I will stick to what has worked for a while until I can find or build something that I can have confidence in.
I’m not much help with your controller. The only one I have ever owned is a Johnson controllers manual dial.