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Re: Sub Zero 550
Clarkk what that metal strip is doing is transfering heat from the heater to the drain to keep it from freezing. Make sure that the metal is connected tightly to the heater. I have used 14 guage copper wire to build this strap to help resolve the issues.This will keep the drain from freezing. You can if you want get what is known as a drain heater. It is wired in with the heater and slides down the drain and heats the drain when the heater is on.
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Just frost or a puddle? If it's a puddle cause by melting frost with no where to go then you had my problem. A clogged drain. First defrost the drain, a hair dryer works well, blow or snake it out then install the factory drain heater fix. Plugs right in and works like a charm. I've had my sub zero 550 for more years than I can remember. I'd buy another one in a minute. Good luck!
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.
The drain line has been clogged. There is actually a defrost heater kit for that problem if you can get the obstruction out. Did you call factory at 800-222-7820 or a local factory authorized servicer? The drain is accessed by removing the fan shroud and evaporator cover. There are a number of of phillips head screws that hold this in place. Once you have removed the two cover you will see the drain tube on the left side of the unit. I use a hair dryer to start defrosting the tube. If you have another freezer in the house it is easier just to turn the freeezer section off for a day or so. I use nitrogen to blow the line out from the bottom once everything has defrosted. Test for water flow, then put unit back together. Call the factory at the number above for the heater kit part number and they will also give you the local authorized parts supplier. The locator web address is http://subzero.com/locator/locator.aspx?type=0&zip=Zip%20Code
The right side of the freezer has a drain that is 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.
I had same problem very recently. The problem with both the refrigerator and freezer on the 550 is that the drain line that takes condensation and water from the defrost cycle to the drain pan freezes up. Sub Zero parts suppliers will sell you a fix-it kit which I used for the refrigerator. The kit is simply a heater wire that you plug into one of the existing circuits and runs down the length of the drain pipe to keep it from freezing up. When my freezer started doing the same thing I ordered the kit for the freezer but the wire was too fat for the drain pipe so a Sub Zero rep gave me a better and more elegant solution. You need a length of bare 12 guage copper wire, about 24 inches. Run it through the drain pipe with about 6 inches exposed at each end. On the underside of the fridge, wrap the end of the copper wire a few times around the black heater coil that you will see running back and forth. At the upper end, wrap the copper wire around the black heater coil that defrosts the freezer coil. The heat generated by the two coil will simply conduct heat through the copper wire and keep your drain line from freezing up. There is a 90 degree bend in the drain line which makes it difficult to feed the copper wire through. I suggest using guitar string or picture hanging wire as a snake. Feed that through first, then us it to pull the copper wire through. Good Luck!
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.
The problem is that the water freezes in the drain, either because the door is not sealing good, it's open too often or there is mold in the catching tray and tube. Best solution is to take a turkey baster (pump), disconnect the flexible tube from the tray, by pulling down, take a large cup with very hot water mixed with a spoon or 2 of Clorox, fill the baster with that mixture and pump it on the drain tube. You have to do it several times, water will come out, but do it until you hear a "woosh" sound and the water goes freely on the drain. Also spill some of that mixture in the tray so it kills the mold.
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.
Seems to be a common problem with these units. You can get a drain tube heater ( got mine from an online refrigerator parts distributor), though may not totally solve problem. Some suggest running a copper wire through tube - supposed to conduct just enough heat to keep tube from freezing.
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.