Question about Sub-Zero Bottom Freezer Refrigerator

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Subzero 550 water drain in refrigerator section backs up

My water drain backs up regularly and floods/freezes the lowest shelf. It also drips into the freezer drawer icing it shut. How do you unplug the drain and or stop it from freezing up?

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  • colpaul Apr 08, 2008

    Regular ice build up below the drawers. Also an increase of mould which I can't seem to eliminate. I have tried using a steam cleaner and bleaching.

  • rkhan138 Jul 02, 2008

    i have the same problem, i know some folks are suggesting to drain it with a pump and put a copper wire to solve the problem. i'm not sure how perform these steps on my built in frig. any advise would be greately appreciated.

  • Anonymous Mar 23, 2014

    Need to take out top drawer of freezer to remove two back screws to unplug drain

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The problem is that the water freezes in the drain, either because the door is not sealing good, it's open too often or there is mold in the catching tray and tube. Best solution is to take a turkey baster (pump), disconnect the flexible tube from the tray, by pulling down, take a large cup with very hot water mixed with a spoon or 2 of Clorox, fill the baster with that mixture and pump it on the drain tube. You have to do it several times, water will come out, but do it until you hear a "woosh" sound and the water goes freely on the drain. Also spill some of that mixture in the tray so it kills the mold.

Posted on Apr 17, 2008

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Try to defrost system get a tube that fits the drain hose, then they to blow it out.... if that does not work.. you might have to install a new drain... you have to pull out unit to get back side.. to install new tube... another point. subzero does make a tube heater that does go in the drain.. part number 4201290. also, make sure that the drain trough is clean and the silicone is still in tack...

Posted on Apr 15, 2008

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Simply defrosting the drain is a temporary repair. A service tech will typically have two choices for this repair... a drain tube heater wired to the evap. motor or a floor heater package that includes drain tube heater but also has a heater for the bottom of the refrigerator mounted under the crispe drawers. This floor heater package almost always cures the problem.

Posted on Sep 27, 2009

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550 sub zero foam is wet and driping. ice maker water line disconnected. drip tube is clear

Posted on Jun 29, 2011

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A few weeks ago I noticed a puddle of water on the top right shelf in the refrigerator section. I figured out that it must be the water that forms during the defrost cycle and normally drains down through a tube in the back into an evaporator tray beneath the refrigerator. Something was preventing the water from draining away and instead it was dripping through the overflow holes from the freezer into the refrigerator section.

I emptied the freezer and took off the back panel. It actually wouldn't come off at first because all the water beneath the defrost heater which should have been draining out the drain hole was frozen into one solid block of ice. I used a hair dryer to melt the ice (took a while - be patient) and then took off the panel.

To melt all the rest of the ice in the drain tube I used the hair dryer. To clear out the ice in the drain tube, I used a turkey baster and kept putting down hot water until I heard water making it down to the evaporator tray beneath the refrigerator.

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http://fixitnow.com/wp/2009/05/26/the-permanent-cure-for-repeatedly-freezing-condensate-drains-in-whirlpool-roper-kitchenaid-top-mount-refrigerators/





http://servicepartstec.blogspot.com/

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