Though your Sub-Zero refrigerator has many amenities, the icemaker is one that many of us appreciate most. After all, we’ve grown accustomed to having an icy cold beverage at any time. So when you notice your Sub-Zero refrigerator ice maker not making ice, you’ll want to address it right away. From an incorrect freezer temperature to a dirty water filter, our Sub Zero refrigerator troubleshooting tips will help you fix the problem yourself.