similar model that i am working on thought was the double coil valve but it wasn't. in water dispense mode get water at door so both valves (one on door and the one on the rear of machine) both work. turns out that when energizing the valves for ice only the front valve was getting power and nothing to rear valve. one of the boards must be bad but have not gotten the new board to see which one is bad. one on the rear or the one on top of the freezer door. of course no schematic on this one to help me out.