Unclogging a blocked or frozen residential refrigerator ice maker fill tube requires a careful manual cleaning process to remove ice plugs and mineral buildup. First, unplug the refrigerator from the electrical wall outlet and open the freezer door to access the ice maker assembly. Second, use a hair dryer on a warm setting or squirt warm water into the fill tube nozzle using a turkey baster to melt any solid ice plug blocking water entry. Third, push a flexible nylon pipe cleaner gently up into the fill tube to clear out trapped mineral scale or debris. You can troubleshoot drainage and flow easily. You can verify that your unclogging procedure was successful when pouring warm water results in smooth flow through the tube into the ice mold tray without backing up.
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