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If the top shelf is freezing the first thing you want to do is turn the icemaker off and see if the issue goes away. If so, replace the fill tube going to the icemaker. This fill tube has been re-designed with slots along the top because it's so long that it would shoot out and cause water to splash. Below is a link to the fill tube you'd want to order for your model.
CLICK HERE for fill tube
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