Question about Sub-Zero 685/S Stainless Steel Side by Side Refrigerator

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Refrigerator is not cooling - it will not go below 56 degrees

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If the refrigerator isn't cool, you need to answer some questions, then see if the compressor is running.
First, answer these questions:
Is the refrigerator completely dead? If so, see “It's stopped completely.”
Is the thermostat knob turned to the proper setting? If not, reset it.
Next, see if the compressor motor is running
The compressor is a football-sized case with no apparent moving parts. It's on the outside of the refrigerator at the back near the bottom. If it is humming or making a continuous noise and your refrigerator is still not cooling, there may be a more serious problem with one or more of several different components, we recommend contacting a qualified appliance repair technician for further help.
If the compressor is not running but you do have power to the refrigerator, there may be a problem with one or more of these:

The compressor

The Thermostat

The overload, relay, or capacitor

The defrost timer

The condenser fan motor

Cooling is poor
For an overall understanding of how refrigerators should work, read about refrigerators in the How Things Work section of our website. A refrigerator or freezer that is cooling, but cooling poorly, may have a problem in one of several areas:

Poor cooling is often the result of a heavy frost build-up on the evaporator coils or a condenser that is clogged with dust, lint, and dirt.
Evaporator coils
Poor cooling is often the result of a heavy frost build-up on the evaporator coils. You can't see these coils without removing a panel on the inside of your freezer. A sure sign that there is a build-up is the presence of any frost or ice build-up on the inside walls, floor, or ceiling of the freezer. Such a frost build-up usually indicates a problem in the self-defrosting system or damaged door gaskets.
The refrigerator is supposed to self-defrost approximately four times in every 24 hour period. If one of the components in the self-defrosting system fails, the refrigerator continues to try to cool. Eventually, though, so much frost builds up on the evaporator coils that the circulating fan can't draw air over the coils. There may still be a small amount of cooling because the coils are icy, but with no air flow over the coils, cooling in the refrigerator compartment is quite limited.
Here's an inexpensive, though inconvenient, way to determine if the problem is with the self-defrosting system. Remove all of the perishable food from the refrigerator and freezer, turn the thermostat in the refrigerator to Off, and leave the doors open for 24 to 48 hours. (Be sure to have several towels ready in case the melting frost and ice causes the drip pan to overflow). This allows the refrigerator to defrost "manually." When the frost and ice build-up has completely melted away, turn the thermostat back to a normal setting. If the refrigerator then cools properly, it indicates a problem with one of three components in the self-defrosting system:
The defrost timer
The defrost thermostat (also called the bi-metal switch)
The defrost heater

to check these components .... please refer to my solution in the below link....

http://www.fixya.com/support/t4189238-defroster_not_working_checked_defrost

If it still does not cool properly, there may be a problem with the refrigerant level or the compressor. You may need to consult with a qualified appliance repair technician to further diagnose the problem
Condenser
Self-defrosting refrigerators all have a set of coils and a cooling fan, usually under the refrigerator, that need to be cleaned regularly. If these coils get coated with dust, dirt or lint, the refrigerator may not cool properly. The coils may appear to be a thin, black, wide radiator-like device behind the lower kick-panel. To clean them, disconnect the refrigerator from the power source, use a refrigerator condenser brush (see the Appliance Accessories section) and your vacuum cleaner to clean the coils of any lint, pet hair, etc. You may not be able to get to all of the condenser from the front, it may be necessary to clean the remainder of the condenser from the rear of the refrigerator.

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Posted on Sep 10, 2010

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Posted on Jan 02, 2017

  • 68 Answers

SOURCE: norcold fridge not cool enough

Yes very likely the cooling unit has stopped working. You need to do a bypass test by unplugging the thermistor on the inside of fridge. It will be attached to the fins. Give it 6 hours or so and check your temps. If they are the same the cooling unit is bad. If the temp goes down the thermistor or circuit board is bad. If you need more assistance feel free to call.
734 777 6432

Posted on Mar 23, 2009

  • 25 Answers

SOURCE: refrigerator not cooling properly

evap. coil could possible be frosting up due to a defrost problem, this would keep the evap. fan from blowing air into ref. section. it also could be a bad evap. fan motor or it could be that the ref. inside light bulb could be staying on due to a bad light switch ,you would be surprisedhow much heat a 40 watt bulb produces

Posted on May 07, 2009

  • 44 Answers

SOURCE: 60degrees in the refrigerator the motor works .

fan motor has open windings, replace the fan motor

Posted on May 28, 2009

woodchuck789
  • 4059 Answers

SOURCE: MSD2454GR Side by Side refrigerator- freezer

If the evaporator coils behind the back panel of the freezer are icing up because of auto defrost failure that will stop the circulation of cold air and eventually affect the freezer too.

check defrost timer, defrost heater, defrost thermostat.


The fridge gets its cold air from the freezer through a vent between the freezer and fridge.The fan in the freezer blows air through it. There is a flap you adjust with the fridge temp. control. Make sure it's opening and closing when you adjust the fridge temp ..

Posted on Jul 01, 2009

Sea Breeze
  • 4654 Answers

SOURCE: freezer works fine but the refrigerator is not

Need you to unplug and lets have a look inside the rear panel in freezer at the evaporator. That is the sign that defrost has stopped. If covered with ice defrost with a hair dryer. Look near bottom there is a defrost heater. Look to see if burned out if glass tube with heater coil inside. Then let me now. If so you will need to change the defrost heater a defrost thermostat. Let me know what you find, Sea Breeze.

Posted on Jul 18, 2009

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