Question about Sub-Zero 632 / S

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Ice on back wall of fridge

Ipretty thick wall of ice on rear wall of fridge. Removed ice once, but immediatley returned. Clogged drain tube? I snaked it a bit, but not sure how far the pan is? Any suggestions what to use as a snake?

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The ice forming on the back wall of your sub zero indicates that you have a part failure. I don't recall exactly what the part is but as soon as you mention your symptoms to a sub zero repairman he'll know your problem. It's an easy fix. Everything comes out of the fridge, takes the inside back wall off and replaces the part. Not an inexpensive repair, however the part is guaranteed for 5 years so you may have an opportunity to have it replaced under warranty as I did.

Posted on Dec 19, 2009

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Defrost by unpluging from wall, then replace defrost timer pcb

Posted on Sep 07, 2009

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1 Answer

Why is there a pool of water in on the floor after a defrost cycle?


Could be a clogged drain tube. Try examinng the drain tube if it is transparent. You could also try snaking it out with some sort of wire to see if it clears a clog. Blowing air through it could also be an easy way to see if it is clogged.

Jul 18, 2014 | Zanussi & Electrolux Fridge Freezer Handle...

2 Answers

Kenmore refrigerator


Hi David
In the freezer compartment - under the panel where the water / ice is collecting - towards the back - is a small pan. The pan collects the water when the defroster cycles on to melt ice & frost that collects on the cold coil behind the back wall panel. The pan has an opening with a small tube connected that allows the water to drain out to the larger pan on the floor under the fridge.
If the tube is clogged, the water will not drain and will eventually freeze. Every time the defrost comes on, some of this water will collect under the panel and drip into the fridge compartment if the drain remains frozen.
You will need to clear any obstruction in the drain tube with a short, flexible snake. Access it from the freezer compartment. Remove any built up ice and make sure the pan has not been bent or damaged in such a way that it will no longer allow the water to get to the drain tube. If the tube is clogged due to ice, you will have to thaw it out first. Squirt hot water down the tube to do this quickly - I used a turkey baster and towels in the freezer with excellent results. After the ice has been cleared - use the snake to make sure the tube is open. Replace / repair parts as needed.
After clearing, pour some water down the tube to check for flow. If flowing, empty the drain pan on the floor under the fridge. Next, mix up about 6 to 8 ounces of a 10% bleach + 90% water solution to pour into the drain you cleared. This will kill any biological (mold, etc.) blockage in the tube. Empty the drain pan on the floor under the fridge again - but be extra careful as it has bleach in it.
My fridge did this to me several times before I figured out that ice was blocking my drain. I got a piece of #10 copper wire - long enough to hang from something above (coil, heater, etc.) in the coil compartment down about 4 - 6 inches into the drain tube. Doing this allows the warm air from the heated space during defrost cycles to be conducted down the copper wire into the drain tube - making it it impossible to freeze up. It works perfectly! I recommend a #12 or 10 copper wire, but aluminum works well too. I'd stay away from steel or anything that can corrode - because it will.
Good luck!

Jun 13, 2013 | Refrigerators

1 Answer

Where is the drain hole? The refrigerator is defrosting and the condensation is under the bottom drawers instead of the pan beneath the frig. I can't find the place where the water should be draining...


The drain is in the FREEZER. Frost and ice melts off the evaporator coil during the defrost cycle and collects in a tray directly under the coil. The tray is pitched to the drain tube that runs inside the fridge wall to a pan under the fridge - where the water is evaporated by the heat created by the compressor and the fan that cools the condenser coil.

To see these parts, unplug the fridge. You'll need to remove the inside rear wall of the freezer. That means the freezer needs to emptied, ice maker removed, etc. Chances are that the drain is clogged - most likely with ice. Manually defrost with a hair dryer and use a turkey baster filled with hot water to direct a stream into the drain tube. Resist using tools to chip ice - the components are made with soft metal and if punctured will allow freon gas to escape. You can suffer instant frostbite to exposed skin or blindness if it gets into your eyes. Once water is flowing, consider hanging a piece of copper or aluminum wire from the defrost heater down into the drain tube. Make sure the wire hangs down as far as the ice build up did (2 or 3 inches at most). This will help conduct the heat into the drain tube and prevent it from icing over in the future.

I hope this was helpful. If it was, please rate it "4 thumbs up". Thanks!

Aug 01, 2011 | Whirlpool Refrigerators

1 Answer

I have a kenmore refrigerator model 36369262991. I have water accumulating on my top shelf. It drips from the thermostat control panel. what is wrong?


I had a similar problem on a Whirlpool Fridge. In fact, there is a good possibility that your Kenmore is made my Whirlpool. As you probably know, Sears doesn't make appliances, but contracts with well-known appliance makers to manufacture kenmore-branded products.

If your fridge is an auto-defrost model, whenever it auto-defrosts, water from the melted ice collects in a tray behind the freezer, and drains into an evaporation tray at the bottom of the fridge through a drain tube. Over a period of time, the drain tube can become clogged, and instead of draining out of the freezer, the water overflows into the fridge. The clue is that the problem is intermittent -- the dripping stops between defrost cycles.

The fix is to remove the liner panels from the freezer, melt and sponge out any collected ice, clear ice from the drain with hot water, and clear any gunk from the drain tube with compresssed air or a flexible "snake." I used 1/8" pvc tubing as a snake.

It isn't hard to do, but if you are nervous about disassembling parts of your fridge, you will need to get a pro to do it.

Jun 29, 2009 | Kenmore Refrigerators

1 Answer

Water leaking into fridge


Unless you have a lot of confidence in your ability as a handy person and plumber, it may be better to leave this to a pro. Here's the story.

When the freezer automatically defrosts, water from the melted ice collects into a tray behind the back panel of the freezer. There is a drain in this tray, and the drain empties into a pvc tube that carries the water down into an evaporation tray that extends from front to back on the bottom right side of the refrigerator. A fan blows air over the evaporation tray to dry the water in the tray before the next defrost cycle.

Over time, the drain tube gets partly clogged with gunk, the water in the upper collection tray doesn't drain completely into the lower tray, and when the defrost cycle ends, the water still in that upper tray freezes. After a few defrost cycles, enough ice forms in the collection tray so it blocks the drain completely, and this plug won't melt during the defrost cycle. Now every time there is a defrost cycle, water collects, overflows, and drips down through the air channel at the back of the fridge into the refrigerator section.

The fix is to clear the drain tube leading from the upper collection tray to the lower evaporation tray. Here's how (if you have the know-how to tackle the job):

First, move the fridge away from the wall, unplug it, and remove the fiberboard panel that runs across the the bottom back. From the front of the fridge pull out the trim grill that runs across the bottom. Locate the evaporator tray on the right, but don't remove it yet.

Empty the freezer, and be sure to safely store the removed items in another freezer, or an insulated cooler, if you can complete the job in an hour or two. Be careful with ice cream and such, which cannolt be allowd to defrost, even partially.

Remove the ice maker if you have one, remove the screws holding down the bottom panel of the freezer, remove it, and remove the screws holding the back panel, and remove it.

Leave the refrigerator door closed, to keep the food in it from spoiling. If this job is going to take you more than an hour or two, move the food in the fridge to another fridge.

Now you need to let the freezer defrost (a hair dryer will make it go faster, but don't let it get wet), and sponge out all the water, There will remain an ice plug in the drain at the bottom of the collection tray at the back. Use hot water to dissolve the ice plug, use a drinking straw inserted into the drain (don't let it drop!) to be sure the ice plug is melted.

You still have to clear the plastic drain tube of collected gunk. This is like snaking out a drain pipe. I found that 8 feet of 1/8 pvc tubing works well. Before you clear the drain tube, remove the lower evporation tray. There is a finger hole at the front. Use it to lift the tray up and forward (be carelful, it may contain water).

Put the pvc "snake" down into the drain in the upper collection tray, and gently work it down through the drain tube. You are done when the snake emerges from the bottom of the drain tube, at the back bottom of the fridge, above where the evaporator tray sits. . Snake up from the bottom, and then back down again from the top, to be sure the drain tube really is clear. Replace the evaporator tray, and slowly pour 2 cups of water into the collection tray at the top, and confirm that it drains quickly and completely into the lower tray.

Empty the lower tray, replace it, and reverse all the disassembly steps.

This is not a permanent fix, because the drain tube could clog again, but should be good for a few years before you have to repeat this operation. At least now you know the cause and the fix, and can deal more effectively with a repair tech, even if you don't tackle the job yourself.

Jun 20, 2009 | Roper RT21AKXKQ Top Freezer Refrigerator

1 Answer

Ice buildup on freezer floor.auto defrost puts water on floor


You have a clogged drain. If you have a top mounted freezer you might have the drain line on the outside of the fridge. Look for a tube that is thicker than the water intake line and goes from back of bottom of freezer down into the back of the unit to a drain pan. Remove that tube and take it outside and use your hose to shoot a stream of water to clean it out.
If you have a side by side fridge, your drain is still at the lowest point at the rear of your freezer. You may have to removed the rear wall of the freezer to get at it. Remove the back cover to get at the other end of the drain tube. It needs to be cleaned out also.

Apr 22, 2009 | Refrigerators

2 Answers

Ice build up condensation will not drain down the tube to the catch pan under the refiridgerator. As much as 3 inches of ice will build up between the veg bins, causing mold builup in fridge, Model 550...


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.

Feb 17, 2009 | Sub-Zero Bottom Freezer Refrigerator

1 Answer

Ice build up in bottom of freezer


Check the ice maker. sometimes they get cracked a will leak water into the freezer compartment. Also check the ice maker fill tube for leaks or someone could have spilled something. Although this is tipical of a clogged drain. What happens is when the fridge go into derfost, it will melt all the frost that is on the evaporator, turning it into water. The water drains down to a trough under the evaporator and down a drain hole in the trough ( this trough is behind the evaporator cover ) Removing the melted frost from the freezer. If that drain is clogged, the water cannot leave the freezer. Then when the fridge starts back up ,it will freez the water that was not drained. After repeated defrosting the water will fill this trough and run off into the bottom of the freezer to be frozzen when the fridge starts to cool again.

Nov 16, 2008 | Refrigerators

1 Answer

We have ice in feezer and water dripping into refrigerator section. I think the drainage tube is cloged. How do I access and fix problem?


hi thanks for the question yes the drain tube is clogged . turn power off pull fridge from wall clean all coils locate drain tube in the drain tray let fridge thaw with doors open once thawed clean drain tube thanks the appliance doc

Sep 28, 2008 | Whirlpool Refrigerators

3 Answers

Clogged fridge drain tube


The drain is behind the back panel in the freezer at the bottom. Sounds like it is frozen over which is pretty common. Will need to remove panel and thaw out drain by running hot water down. You can use a putty knife to break up ice first. Make sure you get all ice around the drain above and below the thin aluminum tray at the bottom. After the drain is free don't be alarmed if you get some water on the floor because the drain pan may not hold all of the water you ran down the drain. Not anything you can do to prevent this on this model.

Oct 07, 2007 | Refrigerators

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