Question about Sub-Zero Bottom Freezer Refrigerator

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My Sub-Zero model 550 freezer drawer is freezing shut. More precisely, it almost appears that some sort of evaporator drain within the right wall of the unit is freezing, and the water back-up then runs down the inside right wall of the freezer, freezing on the drawer track, and running on down and freezing at the bottom/right wall area. My fridge had the typical frozen drain tube several years ago, and a heater kit was installed. Is this a similar problem with the freezer, or something else? Some other entries on this site perhaps suggest a thermostat problem? Please advise. Thanks.

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Posted on Jan 02, 2017

SOURCE: Sub-Zero 550

Hi!

I had the same problem with my 550...several times the tech came out and used a steam machine to blow out the drain...which didn't solve the problem. Finally, they ordered a refrigerator drain heater from sub-zero (part#4201290) and this finally fixed the problem. Hope this helps...I'm not a tech, just a customer. K

Posted on May 19, 2008

textonor
  • 130 Answers

SOURCE: Sub Zero model 550 bottom

Clarkk I have seen this many times. Your drain is clogged. If you pull the drawers out and pull the top cover you will see the evap. On the cover you will find a nozzle that goes to the drain. Use some compressed air and blow out the drain. In some cases there will be some silicone that will need replaced. You can get a food grade silcone sealant at a hardware store. Hope this helps.

Posted on Aug 10, 2008

dykaar
  • 4 Answers

SOURCE: Sub Zero model 550 bottom

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 tub surface with steel wool, or buy the electric defroster for the drain tube to replace the aluminum strap.

Posted on Oct 21, 2008

SOURCE: Freezer not working on Sub-Zero 550 Refrigerator/Freezer

You probably need to defrost freezer - frozen moisture possibly stockedevap. fan motor in the freezer. Turn it OFF for 24 hours and start itover. Make sure no moisture condensation on the freezer compartmentsurfaces as walls and shelfs. If so wipe it out. Pull out and remove upper basket from the freezer, push fan switch which is located almost under ice maker.You have to hear evaporator fan motor start working. Still not work? Call to professionaltechie! Good luck! :)






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Posted on Nov 12, 2008

  • 56 Answers

SOURCE: installing cams to sub zero 550

http://www.subzero.com/locator/locator.aspx?type=0&zip=Zip%20Code is the locator area parts distributors. Once you get the parts in, remove everything from the door, food, shelves.... Then with the door closed remove the upper hinge. If you have a left hinge unit you can bend the shroud out of the way and bend it back when you are done. The door can be quite heavy if you have wood panels on it so you may need help. Open the door 90 degrees and lift up and over the bottom hinge. Remove the cam from the door using a phillips head screw. Then replace the hinge cam that is on the hinge that is still attached to the body. Now you will need help, lift the door up and have some one set it into the lower hinge pin. Close the door and have some one hold it closed while you climb up and reinstall the hinge. You may have to adjust the door by sliding it forward and back left and right until you get your sight line just right.

Posted on Dec 16, 2008

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I have a sub zero (model 550) bottom freezer. Moisture appears to gather at the right side of the freezer then ices up to the point that the drawer can not be opened. I have replaced the drawer seal and...


I had this problem several times and have learned alot. Hopefully some can benefit from my learning and mistakes.

On the inside of the freezer on the right is a drain tube. The defroster cover flows into this little drain. This drain goes into the pan at the bottom of the freezer, and the water evaporates. My subzero 550 had an old drain heater already in there, but obviously not working properly.

First, defrost the freezer completely. I had also poured hot water down this little tube, but this takes too long, and doesn't clear the drain completely. Also, see if you can tolerate turning the freezer temp setting down. I had mine at 1, and it was sufficiently cold. With this simple method, note the weeks /months until it happens again. If you can live with this, you are done.

If not, order a drain heater (contact Clarke Customer at 800-305-0722 and order item number 4202160, Freezer Drain Heater - under $40). I installed this and got some success, and am still counting the weeks after 8 have already passed.

Good luck

May 16, 2010 | Refrigerators

1 Answer

Sub-zero 550. freezer icing


You probably have some food on the way. Unload the freezer and see if the door would close better. Looks like you have a warm air leak.
Sub-zero refrigerator repair in orange county, ca
appliance repair orange county, ca

Feb 06, 2010 | Sub-Zero Bottom Freezer Refrigerator

1 Answer

I have a sub zero model number 550....the freezer keeps having water drip down the right side panel and freeze up...i did notice the door gasket was bad...i replaced the gasket and still have the...


You have a pluggeed drain line. You have to turn off your freezer for a day and leave the door open to dry this out before you work on this problem Unscrew the light bulbs so they don't stay on. To repair this you have to remove the evaporator cover to get at the drain tube. The evaporator cover is held to the freezer ceiling by several screws. Usually two covers come off. Make note of which screws go where, as some models use different size screws. The right side of the evaporator cover is usually silicone sealed and you will need to cut this with a razor knife if it doesn't peal off. Once the cover is off you will see a drain hole on the upper right hand side wall of the freezer. Their are several ways to clear this out, I use a pump up garden sprayer to shoot pressurized hot water through this line from the top and from the bottom of the drain line. To get to the bottom you need to remove the bottom kick panel(two screws) and remove the condensate pan. Note how the pan sits and how it is hooked in the front. You can then see the tube coming from the freezer and you can shoot water through this tube with your sprayer. I sometimes use a smaller plastic tube or a semi fexible wire to run through this line to clear it out. Don't use a hard wire as you don't want to poke a hole through this plastic drain line. Once you have this cleared out you need to clean off all the silicone sealant off of the cover and the side wall. Once everything is clean and dry you must reassemble the evaporator cover and silicone seal it around the drain line. I usually put some sealant on the cover around the drain and some more on the wall before I put the cover on, and then touch it up once it is reassembled. Be careful that you don't get sealant into the drain tube. Let the sealant cure for a day and turn ;your freezer back on. In rare instances the insulation around the drain line in the wall has gotten water in it and has frozen. This destroys the insulation and the drain line will keep freezing up. If your freezer keeps leaking water you will have to buy a drain line heater that Sub-Zero has come out with as an after market repair part. It has very good instructions in how to install this heater into the line to keep it from freezing. Good Luck Appliance Specialists

Nov 23, 2009 | Sub-Zero Bottom Freezer Refrigerator

3 Answers

My Sub-Zero drain ices up too!


There is a drain tube heater and a floor pan heater kit for this model from Subzero
This is Not for a DIY project

Affordable Appliance Repair
Lake Forest, CA.92630

Aug 21, 2009 | Sub-Zero Bottom Freezer Refrigerator

3 Answers

Drain in fridge is clogged - ice formation under crisper drawers


We have cleared / de-frosted the drain twice and it keeps freezing up, causing the accumulated ice problem to recur. Should the freezer settings be changed?

Aug 13, 2009 | Sub-Zero Bottom Freezer Refrigerator

1 Answer

Sub zero 550 (14 years old) has a small but steady leak onto floor from freezer compartment. Small amount of frost buildup on inside of door. Food is frozen and the door "appears" to seal we


Right hand side wall in the freezer - take a look- any frozen water or moisture? Need check a drain line, usually defrost heater inside the freezer wall getting bad and draining water just freezing inside of it.

May 10, 2009 | Sub-Zero Bottom Freezer Refrigerator

1 Answer

Freezer not working on Sub-Zero 550 Refrigerator/Freezer


You probably need to defrost freezer - frozen moisture possibly stockedevap. fan motor in the freezer. Turn it OFF for 24 hours and start itover. Make sure no moisture condensation on the freezer compartmentsurfaces as walls and shelfs. If so wipe it out. Pull out and remove upper basket from the freezer, push fan switch which is located almost under ice maker.You have to hear evaporator fan motor start working. Still not work? Call to professionaltechie! Good luck! :)






______________________________
http://www.SubZeroLosAngeles.com
______________________________

Nov 11, 2008 | Sub-Zero 650 / O Bottom Freezer...

2 Answers

Sub Zero model 550 bottom Freezer/ Refrigerator. The freezer section keeps freezing up and the drain off water runs down the inside across the rail frezing the door shut. No matter how many times we...


Clarkk I have seen this many times. Your drain is clogged. If you pull the drawers out and pull the top cover you will see the evap. On the cover you will find a nozzle that goes to the drain. Use some compressed air and blow out the drain. In some cases there will be some silicone that will need replaced. You can get a food grade silcone sealant at a hardware store. Hope this helps.

Aug 09, 2008 | Sub-Zero Refrigerators

1 Answer

Subzero bottom freezer drawer is freezing shut.


Silicone bath/shower sealant should work, the one that smells like vinegar. Also known as RTV.

 

Just make sure the area is dry, clean and free of old caulk.

It'll need to be at room temperature to set properly for a few hours.

 

I have used this sealant on things before that went as low as

-50C. Preperation is the key though.

Oct 11, 2007 | Sub-Zero 650 / O Bottom Freezer...

2 Answers

Sub-Z 550 reidge internal leak


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.

Aug 19, 2007 | Sub-Zero 650 / O Bottom Freezer...

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