Low Water Pressure from House Supply
The water inlet valve supplies water to the refrigerator ice and water dispenser. The valve requires a minimum of 20psi to work properly. If the water pressure is too low, the valve may not close fully when the power is shut off. As a result, the valve leaks water into the ice maker, causing it to overflow. Check the water flow and test the pressure to determine if it is at least 20 psi.