Bit of a curly one that. Is it a tight fit putting veni in the fridge? Im guessing the thermostat is either contacting the meat or is being insulated another way. This will give you the run on you are seeing. The thermostat thinks its warm when its not.
Tried turning the stat up a bit?
When you say turned down to 1-2 where was it before? Those thermostats often are too coarse to take as being accurate, its more graduations of scale. You may actually be setting it to freeze.
Bookmarks