Thanks for the explanations. Makes sense now.
Yes, my old Dometic fridge had to be set at 1 and the thermistor to high on the right and it still went just under freezing. At least it did cycle from there. Had to replace that fridge for other things wrong with it.
I will get the replacement part for the Norcold as in the OP. If that makes no difference, I will check out those other gadgets mentioned. Good tips on that, thanks.
I did have some calibration problems with fridge thermometers, even though my new multimeter checks out as in the other thread. I have two fridge thermometers and they disagree by more than moving the thermistor among the fins can do. Cure is to have only one thermometer! :)
