The single most common reason why a residential refrigerator automatic ice maker stops working is a blocked or frozen water supply fill tube. Over time, water splashing during fill cycles or high freezer humidity can cause mineral deposits and ice to accumulate directly over the nozzle of the water inlet tube, freezing it solid and preventing fresh water from entering the ice mold during the next harvest cycle. Other common reasons include a closed household water supply saddle valve, a kinked supply line, or a defective water inlet valve solenoid. You can troubleshoot water flow easily by inspecting the fill tube. You can verify that your corrective action is successful when clearing the ice plug with warm water or opening closed valves restores normal water filling and ice production.
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