If you have the controller overriding the chest freezer thermostat, it will only provide cooling. Since the temperature within the freezer is lower than your set point of 68, the compressor will not run. You will need to add a heat source in order to raise the temperature to 68.
If you just want to test whether the controller is working, make the set point 55-60F. The freezer should cycle to cool to that temperature.
Fermenting: Motueka Pilsner SMaSH, Golden Sour w/ECY01, Dark Sour w/2nd gen ECY01, plum wine
Bottle Conditioning: Leftover Grain Pumpkin Brown Ale
Drinking: Kumquat Witbier, Odors in My Nose IPA, Imperial Stout (4 variants)