Ice makers freeze up when ice can't release off the evaporator plate. As water continues to flow over the stuck ice, it continues to form to the point where it becomes a massive block of ice.

How do you fix a ice maker that freezes up?

If frozen, you can thaw it out in place with hot water using a baster or remove it from the ice maker and run it under hot water. The water valve lets water flow into the refrigerator. This water goes to the ice maker. If the water inlet valve is faulty, it can overfill the ice cube area and freeze up.

What causes an icemaker to freeze up?

Ice makers freeze up when ice can't release off the evaporator plate. As water continues to flow over the stuck ice, it continues to form to the point where it becomes a massive block of ice.