Sounds like you didn't re-wire the controller, right? And you didn't do any special wiring for the keezer, right? - you're just plugging in the keezer to a relay switched A/C outlet? Do you have a wiring diagram for how you wired the controller? Maybe a stupid question ... are you sure the wire you're connecting and disconnecting for diagnosing is a hot wire? Is the current draw on the new freezer higher than the older one? Compressors don't usually draw more than a couple of amps, but can have pretty high starting currents. I can't imagine that being a problem because the manuals I see for the TSS2 have pretty high capacity relays.