Fermwrap Settings

I’ve installed my Fermwrap in the fridge hanging it from door. The test I ran showed the heat cycling 1 sec on and 4 off. Is this enough heat or do I need to increase the ON cycle.

You are not giving us much info to work with here.

If you constantly have overshoot, then your Kp value is too low. This will cause the integrator to compensate, but it is much slower to respond (by design) than the proportional part.