I have a kfcs22evms8 Refrigerator and the ice maker is not working. When the control arm is down, the blades in the unit continue to turn like they are trying to eject the ice cubes and won't stop. No water is ever dispensed. The ejector blades will keep spinning until I lift the control arm back up to the off position. Is there a part that I can get to repair this or do I need a whole new ice maker? Thanks!