The compact ice maker has three microswitches; a shut-off switch, a holding switch, and a water solenoid switch. The water solenoid valve is also shown on the schematic. It's actual location is down near the bottom of the refrigerator cabinet at the rear, but it's still shown electrically as part of the ice maker circuit. The other components shown are the stall-type motor, the mold heater, and the bimetal thermostat, which initiates the harvest cycle once the water in the mold has frozen and the cubes are ready to be harvested.
When the mold chills to the right temperature, the thermostat closes and the harvest cycle begins, as shown in Figure 3. The freeze cycle has ended and the harvest cycle has begun.
