Question about Sub-Zero 642

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Sub Zero 642 condensation back wall

Had the coil replaced 3 months ago due to freon leek. now condensation is back in the exact same place on the back wall. repair guy says it just needs a "dryer" but I think he didn't fix it and it is still leaking freon.

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  • Sub-Zero Master
  • 488 Answers

FIRST TIME HE DID RIGHT THING, BUT IF IT HAPEND AGAIN DRYER WOULD NOT FIX THE PROBLEM, NEED HEAT EXCHANGER I WOULD THINK.

Posted on Apr 19, 2014

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Posted on Jan 02, 2017

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  • 82 Answers

SOURCE: 8 year old Sub-Zero model 690. Condensor coil leaking

When copper and aluminum are connected it cannot be welded, it has to be crimped. this is a problem that is not exclusive to sub zero, an all aluminum evaporator ( if it is in the refrigerator it's an evaporator) should resolve the problem nicely

Posted on Jun 18, 2009

  • 1 Answer

SOURCE: Cannot reopen Sub-Zero 642 freezer door for 50 seconds

Yes, this is normal.  My 642 does the same thing. It seals to be more efficient while trying to cool back down after it has lost heat while open.

Posted on Aug 23, 2009

  • 112 Answers

SOURCE: I have a ten yr. old Sub Zero model 642. The

maybe a re-gas will last another ten years...if the leak is that small a re-gas will probably last it days out....ask the service man to re-gas it so the food does not spoil until you can save up for replacement...then just see how it goes.

Posted on Jul 21, 2010

SOURCE: I have sub zero 642.

Hello,

I will advice you clean the condenser on your unit, follow the steps below to clean the condenser,

Before you delve into any electrical appliance and especially something like a refrigerator, it is extremely important to switch off the refrigerator and unplug it from the power source.
After you have switched off the power of your refrigerator, you would find a grill like cover panel at the bottom front part. Unscrew or remove this panel by snapping it off, you can do either depending on its setting. Then find a plug point for your vacuum cleaner as you are soon going to need it.

You have already set the vacuum cleaner, so just turn it on. Use the attachment of the wand and nozzle, your condenser cleaning equipment for cleaning out all the dirt and grime collected beneath the refrigerator. Get rid of as much dust as you can from the condenser. The nozzle attachment will be more helpful in cleaning the coils.

Once you are done with the coils, check out the cover plate which would also be dirty. Clean out the grills from that cover plate. Hot bleach water will do wonders to clean the plate. Before you re-install the cover plate let it dry.

Well, congratulations! You have successfully accomplished condenser cleaning with regards to your refrigerator. You can now turn the refrigerator on.

Take care.

Posted on Sep 07, 2010

  • 842 Answers

SOURCE: turn off code for sub zero refrig 642

Hi Dave,
On your control panel, do you have a (bell) logo? If so, press and hold that button unit the code disappears, it could take ten seconds or so, you should hear a beep. If not, turn the unit off for about 1-2 minutes by the control panel on/off switch, then when you turn it back on it should not re-appear. It depends on the model and version software in the unit on how to remove the service light and error codes. But if you continue to receive error codes you will need to have the unit looked at by a certified technician to prevent bigger problems down the road. I am a certified technician and willing to lead a hand when possible. You code 24 is a defrost over heat fault, which can happen from time to time, every-time I found this code I could never find an error in the system or defrost hardware, when I cleared the code, it never appeared again. I hope this helps.

Posted on Nov 07, 2011

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1 Answer

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Usually the problem is not with the dirty condenser. Most likely there is freon leak at evap coils on fresh food side. You can charge it with freon to proper pressures, but it will leak out; or replacing evaporator - thats most common place where freon leaks out. Here is my video how i do it. Thanks.

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this is usually a leak in the evap coil,if it's under 12 years old the coil is still under warranty.sub zero is a great machine,the only problem is that the evap coil behind the back wall in the fridge section leaks or a hole develops.the freon leaks out and the fridge section will continue to get warmer,the vacumm coil lite will come on.i've seen this happen to some machines that are 3 years old it happens.you need to get a tech in,he'll recover the gas,evacuate it,replace the coil and add new freon in,if it's under warranty it will be 650 to 750,or if not under warranty 11 to 12 hundred dollars to repair.

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I had the vacuum condenser message on my sub zero for about five years. I vacuumed it every six months (as per the owners manual) and the message would go out for about a day and then come back. I figured it was just a bad code.

Recently, my frigerator temp went from the normal 38 to 40 deg F to about 53 to 55 deg F. My freezer temperature was normal (0 deg to -2 deg F). My unit is under warranty (parts only) -- Model 560 -- so I called an authorized service company. They found that my evaporator coil was bad and replaced. I had to pay for labor and freon so my bill was about $300.

Since then -- my warning message is gone and my frig temp is at 38 deg F. Constant. No waivering.

So - for those of you with a Sub Zero with a wandering frig temp and with the "vacuum condenser" message on all the time -- I am suggesting that you get service out to look at it immedately. More than likely -- you have a freon leak and the frig cooling is insufficient leading to the error message ("vacuum condenser"). I am guessing that my frig was running all the time leading to a higher electric bill (potentially -- an extra $10 - $15/month * 12 months * 5 years of owning the house = $600 - $900 of money thrown out the window.

Hope this helps!

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Chartigan - had this problem with my 1998 642 about 5 years ago, and had to have the condenser coils replaced twice- because the refrigerant was leaking. warning signs are: temp is more than 37 degrees [ get a fridge thermometer to monitor], food seemed to spoil quickly, and frequent notices from the display bar to clean condenser . after cleaning it 3 times in a month, when i called the service center they said that warning actually means"call service center" - arrrggghh the manual sure doesnt say that! anyhow - just something to consider, and hope your problem is not this serious.

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it's condensate from the evaporator coils. when the humidity collects on the coils, it should drain into a pan under the fridge that gets evaporated from the hot-side line. check to see if the condensate tube from the coils is still in the pan.

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I would never get rid of my Sub Zero they are the best made and, I service all makes of refrigerators good for you; buying the best!

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