Question about Sub-Zero 650 / O Bottom Freezer Refrigerator

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Sub-Zero 550 water dripping on right side of freezer forming ice on draw

I have a Sub-Zero 550 and water is dripping onto the freezer draw and freezing making it hard to open the freezer. It seems like water is leaking out of the tray. How do I fix? How do I get to the tray and drain line to see if it is plugged up?

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  • UpdateDude Jan 27, 2008

    I'm having the same problem.

  • seanfarrell Feb 02, 2008

    I'm having the same problem too! Definitely interested in any fix you may find.

  • stevecoppage Feb 03, 2008

    I also have the same problem with my 550.

  • MarkEriksson Mar 09, 2008

    I have a 550 and have the same problem as the other people. I've had mine for 5 years without any problems except a door hinge. My freezer drawer freezes closed when not opened in 12 hours. Has anyone lese found out what the fix is?

  • arizjack Aug 29, 2008

    I have the same problem with both freezer and refrigerator. Could you please tell me where I can purchase the heater kit for a model 550?

  • aundy Oct 03, 2008

    I called an appliance company who said to install a Sub Zero heater kit that will stabilize the temperature at the bottom of the fridge where it meets the drawer freezer below. They want to charge me $550, which seems very high. Does anyone know if this is a reasonable price?

  • WhislerD Mar 25, 2009

    Sub-Zero 550 drain trough spills-over into the inside of the refridgerator compartment, eventually leaking out the door seal an onto the floor. Technician said the drain tube freezes because of the close proxcimity to thefreezer compartment. He said to defrost the freezer completly to clear the drain tube.

  • wags2099 Mar 31, 2009

    I have a 550 model with similar problems.  We have spent a lot of money to fix it, including the heater kit that is mentioned in several of the answers.  These repairs alone have totaled over $1000.  To be honest, I would not spend the money again and would probably buy another (non sub zero) refrigerator.  The unit is about 13 years old now.  We have had to turn off the ice maker which also had problems.  In contrast, the refrigerator it replaced, a GE that is now 21 years old is still in the basement working and has never needed a repair.  It seems ridiculous that the company acknowledges that these problems are typical for this model.

  • Gary Davd
    Gary Davd May 11, 2010

    The Ice Maker (Tray) ??

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I had a similar issue that started about a year ago with my Sub-Zero 550. My freezer gasket actually tore after several times of freezing closed. I thought that a new gasket would solve it, but a second but related problem developed where I was getting alot of condensation under the left side of the unit, with the water dripping onto the floor...eventually staining the hardwood floor in front of the unit.

I traced the problem to a clogged condensation drain pipe in the refrigerator. It is a corrugated pipe that drains a trough behind the crisper drawers. My pipe was clogged with black sludge and frozen down below. The condensation in the fridge would overflow out of the trough and leak below the crisper drawers, down out through the gasket.

To resolve, I used a piece of solid thin wire folded in half and twisted with a small loop at the end to fish out as much sludge as I could. Then squirted hot water into the pipe until it totally unclogged. I believe this will solve the problem without any need for a heater underneath the unit. The 550 worked fine for 4-5 years before this happened.

Posted on Nov 29, 2008

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My Subzero 550 did this: The right side of the freezer has a drain that was plugged with ice. When the freezer defrosts the water runs down the inside of the box and onto the drawer rails, where it then freezes. The drain tube is normally kept ice free by an aluminum strap wrapped around the copper defrost tube in the freezer heat exchanger, which runs down into the drain tube. Over time the copper defrost tube gets some surface corrosion and the aluminum strap doesn't get warm enough during the defrost cycle to melt ice in the tube. If you can get it apart, you can clean up the tube surface with steel wool, or buy the electric defroster for the drain tube to replace the aluminum strap.

Posted on Oct 21, 2008

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Sounds like your freezer drain is blocked up. You will require a freezer drain heater kit for this repair. It was a common problem for this unit and can be a easy fix. However it does take some patience to fish the heater down into the drain pan.

Posted on Mar 31, 2008

  • dottielove46 Nov 26, 2013

    My fridge leaks on floor on right side every morning, but there is no ice noticeable anywhere. I've taken the back panel out of the freezer side looking for a drain hole, per suggestions, but couldn't find one. Anyone have a schematic? That would be very helpful.

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We have had a chronic problem with bottom of fridge getting wet/water puddles and leaks onto floor. when this happens, there is inevitably a lot of ice buildup on the bottom of the fridge, near the drain tube and the drain tube is usually frozen. i read many posts re: this problem and various fixes, and tried some (never spending any money), but have mostly just cleared the ice from the bottom of the fridge and put hot (boiling) water into the drain tube (which I disconnect) with a turkey baster until cleared. However, I did notice, recently, that there is water leaking down from the trough which is supposed to take the condensate into the drain tube and I have a new theory -- the seal at the back of the trough leaks, allowing water to hit the refrigerator floor and freeze. When the ice builds up to enough height, it contacts the drain tube and the draing water freezes, which then allows all condensate to spill over onto fridge floor and out onto kitchen floor. SOOOO, what I did was loosen the back trough screws (about 8 of them) and found that there is a white silicone seal strip which lifted right out (i.e., no longer adhered), which leads me to believe that it had just loosened over the years and was no longer sealing. I then put clear silicone seal into the gap with my finger and tightened the screws. I will now watch to see if this helps, but the hope is that the spillage onto the kitchen floor was due to ice buildup in fridge and the frozen drain tube also caused by the ice buildup in the fridge. Hopefully, by sealing the trough to the back fridge wall we have solved the problem? It sure was a lot cheaper than a $500 heater in a fridge.

Posted on Jun 24, 2009

  • pearl Oct 30, 2011

    Did This work?

  • Prash Sawant Sep 18, 2012

    Yes, I'm curious too. Did it work?

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