Turn the refrigerator ON and leave the arm of the ice maker in the up position. I do my ice maker last. After ALL lines have been blown out, put the arm of the ice maker in the down position. Go and sit down with your favorite beverage and watch a ball game while the ice maker cycles enough to expel the water out of the line. Go back out to the RV and disconnect the air line. All done! I've done this the last two winters with no problems at all.
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