Question about Sub-Zero Bottom Freezer Refrigerator

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My sub zero fridge is leaking water. The drain at the bottom of the fridge is blocked and the water overflows and eventually flows out when the door is opened. How can I unclog this drain. This is a problem off and on and I'm wondering if it happens when the fridge door isn't closed all the way? Do I need to defrost?I'd like to be able to fix this myself instead of calling service. I don't how old the fridge is and I don't have any paperwork on it. I estimate that it is probably at least 10 years old.

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Use a syringe with clorine bleach to unblock the drain.and check that the door seals are touching all round otherwise you will constantly have a frost problem.

Posted on Oct 14, 2010

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Posted on Jan 02, 2017

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Condensation water build up inside refrigerator


The tray underneath your fridge is probably clogged, and overflowing. There is an evap tray underneath, and if it does not get adequate airflow, it will overflow, and leak out.

Clean the bottom front vents, and underneath the fridge to ensure adequate airflow.

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Hi. My Sub Zero 632 is dripping water from the bottom corner of the freezer door. Can you tell me what the problem is and how I might fix this? Thank you so much.


It does appear that your side by side refrigerator has an ice maker, so that rules out any extra water from a faulty valve.
I think the seal on your freezer door may be broken/torn.
Usually there is no water (per se) in the freezer, but as things thaw, or as the door is opened it can create condensation that leaks. The freezer will retain cool for a while but eventually things will thaw out and water will leak.
Please check the thermostat for the freezer, and make sure there are no containers leaking in the fridge portion.
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Frigidare Mod.FRS26H5AS Leaking water into bottom of freezer where it freezes then leaks out door


I had the same issue.. I checked this web site and found the solution (on another post).. It was the drain of the fridge being blocked.. I didn't know the existence of such drain.. it turned out that it got blocked with some dust, therefore with every defrost cycle, the water was not going down to the evaporator tray, then going inside the fridge (eventually freezing), then overflowing to the outside doors.. Check on youtube for videos on how to open the fridge and clean this drain.. Have fun..

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There is a trench/drain on the back wall behind


If you can view to rear of the unit wnd remove the bottom panel, there should be a hose coming from the drain to a pan of some type. If it has clamps on both ends remove the tube, place a vessel under the top tube attach point of trench drain and test the trench drain, if water is flowing freely from the drain to the vessel then clean out the tubing and replace.

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There is water dripping filling up the bottom under the salad container. The model is a LRTN22311TT.


Remove contents of fridge and check the drain line running down the top back of the back of fridge and follow to lower section of fridge (usually a back ledge or under the crisper sections) and locate a small round drain hole. Also, check to see that the drain collector (funnel looking thing at top back of fridge section) is located under the freezer defrost drain opening, to allow water to flow through the fridge into the drain pan under the fridge.

If something has obstructed the drain funnel, path, tube, or lower drain hole, remove the blockage to allow water to drain into underneath of fridge into drain pan for proper evaporation of water produced from the usual daily defrost cycle of fridge/freezer.

If that is not the problem, it could be that you have a leaking water supply line for your ice maker and you'll need to see if the freezer is allowing excessive water to flow out of the ice maker into the fridge section.

Another simple check/solution is that the fridge is not properly leveled, meaning that the front of the fridge should be slightly higher than the rear to allow for proper drainage and self closing of the front doors. This will help keep the water flowing in the built in channels and drains.

A perfectly level fridge isn't the right way to install most moveable refridgerators, while built in fridges (Sub Zero, etc.) are designed for plumb and level installations for proper functioning and use.

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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.

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The tube behind the crisper drawers is not insulated well enough and will repeatedly freeze, leaving the water to drain on your floor. The solution is to thaw the tube and put a piece of copper the length of your tube, into the area below. The wire extending into the area below is just warm enough to keep the tube from freezing.

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there are 2 possibilities. first the drain is blocked causing water to overflow from the defrost water gulley at the bottom rear of the inside of the fridge. this can form ice as it is close to the division between fridge and freezer. second, the .fault of ice growth can be caused by breakdown of the cabinet insulation. of the two, the first is the moree likely. to test drain is cloear, pour a little water down the drain. if it does'nt flow freely, push something flexible down the drain hole till blockage is clear

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