Question about Sub-Zero 650 / O Bottom Freezer Refrigerator

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We have our Sub Zero model 650 frig set to 35 degrees, our usual temp, but suddenly it won't get lower than 50. Freezer seems fine.

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Check for a fan motor in between the freezer and the fridge. Or you have a block of frost in there shutting off air flow.

Posted on Jun 29, 2009

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My 12 year old subzero fridge (650) is not getting cold. this morning i discovered ice behind the fresh food drawer, removed it, it was running fine, temp 35. now tonight the temp is 51. freezer is fine....


Is it flashing vacuum condenser? Ice behind the crisper drawer shouldn't effect the temp. What is it set at? You can go to www.subzerospecialists.com and click on Tech Help for additional info.

Feb 23, 2011 | Sub-Zero 650 / O Bottom Freezer...

1 Answer

Freezer reads 00 but the frig section reads 57....where is the line to the frig...seems that is plugged


i coud not see the model # of your sub zero . some models like th 550 / 650 use 2 compresors . freezer system maybe ok when fresh food is not . . first thing to do is ck the cond coil up on top and clean it and mk cure the fan is cooling the coil . you moy have a cold control failure . and the fresh food comp may be low on gas . these are the most common cause for your problem .. mm feed back pls ..

Oct 24, 2010 | Sub-Zero Bottom Freezer Refrigerator

1 Answer

I have a ten year old Sub-Zero 650. The "vacuum condenser" has been displayed for over a year even though the coils have been vacuumed and are kept clean. The fridge has been working fine despite the...


Look on your sub zero for more model numbers. I have found some information indicating that the refrigerator thermostat may be the problem but need those numbers to confirm. Thanks, Sea Breeze
You can also find a user manual at this link

http://safemanuals.com/zearchres_663.php

http://servicepartstec.blogspot.com/

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Apr 27, 2009 | Sub-Zero 650 / O Bottom Freezer...

1 Answer

Sub-Zero temperture fluctuation


Just posted this elsewhere and it sounds like the same problem:
As you probably know, the recommended temperature range is between 35-45 F so if your control will not allow you to set this, the sensor or associated regulator has failed. 

This seems to be an issue with Sub-Zero.

Aug 02, 2008 | Sub-Zero 650 / O Bottom Freezer...

1 Answer

Sub-Zero 561


You are number 3 in the series this AM-
As you probably know, the recommended temperature range is between 35-45 F so if you control will not allow you to set this, the sensor or associated regulator has failed. 

This seems to be a problem with your brand; I'd check to see if there is a recall or factory 'fix' for this. They may have gotten a batch of defective sensors or controllers.

Aug 01, 2008 | Sub-Zero 650 / O Bottom Freezer...

1 Answer

650/5


Sounds like a defrost problem. Check to see if there is any frost buildup in the back wall of the freezer. If so, it is not defrosting as it should.
  • possible causes:
  1. bad defrost timer
  2. bad defrost heater (in freezer)
  3. bad thermo switch in freezer
If you don’t know what these are then unplug the machine and let the ice melt in the freezer overnight with the door open. Then try it the next day, if is cooling fine then you need to have a service person replace one of the above items.

Jul 06, 2008 | Sub-Zero 650 / O Bottom Freezer...

1 Answer

Sub zero 650 fidge holding at 53 degrees


Most likely you have a leak in the evaporator. Subzero warranties the parts for 12 years. Call them to find out what they will cover. They are agreat company and will be fair with you.

Jun 14, 2008 | Sub-Zero 650 / O Bottom Freezer...

1 Answer

Sub zero 650 fidge holding at 53 degrees


That depends on if your model has a five or ten year warranty on the compressor. Your problem may not be warranty related. Check and see if the condenser is clean, check for a frozen cooling coil.

Jun 02, 2008 | Sub-Zero 650 / O Bottom Freezer...

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