What water pressure is required for the ice maker and water dispenser to work properly?

A water pressure of 20 to 125 psi (138 to 862 kPa) is required for the ice maker to operate properly. If the refrigerator is installed in an area with low water pressure below 20 psi, you can install a booster pump to compensate. For a reverse osmosis system, the pressure coming out to the refrigerator's water inlet valve needs to be between 35 and 120 psi. (Page 13)