hi jeff. before i ordered the diode i tried one more test to be sure.i disconected the wires from the water valve that feeds the ice maker and left the ones on that feed the water dispenser.i then got a glass of water from the despenser and water still came out the the spout that feeds the ice maker. then i knew it was the water valve. replaced the valve and it works fine now. however i put my meter on the ice maker wires at the water valve and got a reading of 40 v when i was despensing a glass of water. i think its proabbly a back feed from the netural.what do ya think thanks jeff.