On my side by side refrigerator, GE model GSH25KGMD WW, the shoot on the ice maker and the shoot on the door have been frosting up for the last four days. It seems to clear up, then it frosts up again. The freezer seems to be freezing, and the refrigerator is cold. I emptied the ice out, and the ice maker made new ice. I moved the dial up a notch.

What could be causing this, and what can I do to fix it?

Thank you.