Question about Sub-Zero Bottom Freezer Refrigerator
I had the same problem but fixed it recently. The problem originates with the drain trough mounted on the back interior wall of the fridge that slopes down into the middle. The drain tube is attached at this point and runs to the pan under the unit. This drain trough is screwed to the interior and sealed with silicone caulking. Over time the caulking breaks free from the interior wall of the fridge allowing the defrosted water to leak past the trough, collecting in the bottom of the compartment under the veggie drawer. It freezes there building up an ice ***** that eventuallly wraps around the drain tube. Any water that now runs into the tube freezes in place over time forming an ice plug preventing any drainage at all. Now the defrosted water begins to flood the interior of the fridge eventually leaking out which it did in our situtation.
There are two solutions. One is to take off the drain trough, clean it up and the interior wall of the fridge. Also thaw out the ice plug in the drain tube and make sure it is clean and drains freely. I used hot water and a syringe to inject it into the tube until the ice melted. Dry everything off. Reattach the drain trough using silicone caulking approved for kitchen/bath use. You may have to shut down the fridge and warm it up to meet the application temperature limit of the silicpne. The other solution is simpler. After cleaning and drying the drain trough, I applied an adhesive backed closed cell foam rubber gasket (3/16" thick automotive) to the back surface of the trough that sits against the interior wall of the fridge when in place. When screwed back in place, the gasket is compressed preventing water from leaking past. The fridge does not have to be warmed up for this fix. It has been in place for a few months now with now problems.
Posted on Mar 23, 2009
I HAD THIS PROBLEM ALSO. I DISCONNECTED THE DOWNSPOUT TUBE AND SNAKED/WRIGGLED A PIECE OF FLEXIBLE COPPER WIRE DOWN THE TUBE. I USED MULTISTRAND 12 GAUGE, 24 INCHES OR SO, STRIPED THE INSULATION AND APPLIED ELECTRICAL TAPE ABOUT EVERY 1 1/2 INCHES TO KEEP THE STRAND TOGETHER. WRIGGLED IT DOWN AS FAR AS POSSIBLE, PUT IT UP THROUGH THE DOWNSPOUT DRAIN, BEHIND THE RUBBER SEAL SO IT ENDED UP ON THE BACK WALL OF THE FRIDGE AND TAPED IT THERE. I HAVE HAD NO PROBLEM FOR OVER A YEAR WHERE BEFORE I WAS DEFROSTING THIS EVERY MONTH OR SO. THIS CAN ALL BE DONE WITHOUT PULLING THE FRIDGE.
Posted on Feb 28, 2009
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Posted on Jan 02, 2017
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