Why is my Whirlpool refrigerator's ice maker not producing ice?

Check that the refrigerator is connected to a water supply with the shutoff valve fully open, and confirm the ice maker switch is in the ON position. Also check for any kinks in the water source line, which can reduce water flow. For a new installation, wait 24 hours for ice production to begin and up to 72 hours for full ice production. (Page 10)