Can anyone give me an idea as to what is going on? I have a Kenmore side by side refrigerator, model # 253.54703402 with ice & water in the door. After being switched to serve crushed ice a few days ago, it will not dispense cubes any longer when switched back. I tried removing the ice bin to clean and thaw it out, but no luck. Is it a switch problem or is there something simple I'm not thinking of? Thanks!