Water will not enter the icemaker until the operating thermostat sets cold and runs a cycle. So it will be a period of time before cycle will run. Remember, it operates off temperature. When icemaker thermostat reaches operating temperature, the thermostat closes circuit to mold heater and motor. Heater heats mold and releases ice from mold.
Motor then resumes turning the arm and fingers to eject ice.
After ice is ejected, electric circuit is then made from icemaker to water valve connected to water supply. The valve opens and sends water thru a tube into icemaker. The water begins to freeze and we have started another cycle. The older icemakers had micro switches operated by a cam that the motor turned to send the electric signals to the components at the proper time. These are repairable.