Originally Posted by bueschen
I would like to just use the wires in the original thermostat to wire up the new controller. Is this possible?
Is it possible using only the wires in the original thermostat? Maybe yes, maybe no.
You will need to figure out what wires you have available at the thermostat. The controller needs both sides of the 220V to power the controller. If only one side comes to the original thermostat, you may still be able to find the other side nearby at a light or fan.
Is there a wiring diagram on the refrigerator anywhere?