Fermenting an IPA using my new Johnson controls temperature controller. This device is suppose to override the temperature of any refrigerator you hook it up to. At first it seemed to be working fine right after pitching yeast. As the beer got to be very active, the controller didn't seem to be doing its job. We have the sensor for the controller suspended in the fridge right next to the fermentor and set at 65 degrees but as the fermentation temperature rises, the fridge doesn't seem to be kicking on to cool it down inside. The beer is now fermenting at 72 degrees which is 4 degrees higher than I want it. Does anyone out there have experience/ tips or suggestions for using a controlled fermentation fridge? Any advice would be greatly appreciated. Cheers!