TheCircuitBox
Member
You have it wired correctly, so the PID is not working.
If you tie black to red, and the fridge comes on, then it's the PID not doing it's job. That is all the PID does: close a switch between 7 & 8, black to red.
If the PID is on, and in cooling mode, and showing a reading from the sensor that is warmer than it's setting, then it's not working.
Also, If you hooked up white & black to 7 & 8 before, or green & black, it's possible it fried the relay in the PID.
Ha, I did that combination days ago and it just flipped the breaker when I tried. Never mix black and white it is very dangerous. Looks like I will have to buy another PID. Let this be a lesson to others.
What PID would you suggest or should I just make an external one?