I have a component-style ice maker, by which I mean it's not one of the modular kinds with holes for probe tests. It's similar to that style in that the water fills the mold, then the thermostat activates the mold heater once the water has frozen. A plastic arm rakes the loosened ice out of the mold.
At least, that's what's supposed to happen. About three weeks ago, my ice maker stopped ejecting the ice. The water filled the mold, and the ice froze, but the mold heater never turned on.
I took the ice maker out of the fridge and tested the heating element and thermostat with a multimeter. Both seemed fine. There is no water frozen in the supply tube, either. With an empty mold and a manual turn of the gear, the ice maker fills with water like normal.
I decided to replace it, but now the new one isn't ejecting ice, either. What am I missing?