Why is my ice maker only filling up halfway?

When a residential refrigerator automatic ice maker only fills its mold tray halfway with water, resulting in undersized, thin, or misshapen ice cubes, the malfunction is typically caused by restricted water pressure, a partially clogged water filter, or an improperly adjusted water fill timing mechanism. If your household water pressure is too low, or if a sediment-clogged water filter restricts the flow rate during the brief window that the electronic water inlet valve solenoid stays open, insufficient water enters the tray. Furthermore, some modular ice makers feature a physical water fill adjustment screw on the side of the unit module head that can be turned clockwise to increase water fill volume. You can troubleshoot water flow easily by checking filter status. You can verify that your corrective action is successful when replacing a clogged water filter or adjusting the water valve timing restores full water volume, producing thick, fully formed ice cubes.