Question about Sub-Zero 632 / S

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Subzero 700BR Refridgerated Drawers Not Cooling

Over a few days the drawers began warming up. First thought was to remove the kick plate and vacuum the fins. Found that they were totally covered in lint / dust. I vacuumed them and put the kick plate back. The compressor still works but the drawers are not cooling. I have turned the unit off, reset the cooling temperatures and still the same problem. Is there an "easy fix"? That is, before calling in an appliance repair person. Not sure if it may be the thermostat? Thanks

Posted by Lloyd Collins on

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Douglas Henry

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If your unit is new enough to have an on/off button on the keypad, then put it into diagnostic mode by pressing and holding the "colder" button, the pressing the on/off button at the same time. the display should change and it should read a temp like 67r or 67e. you can scroll back and forth through the 2 temp readings by pressing the colder key. If the fridge has been running, the temp of the one ending in "e" should be no more than 38. If it is, then you most likely are low on freon and will need to have the evaporater replaced. The part will be covered under the 12 year parts warranty, but the labor will only be covered for 5 years.(from date of install, not date of manufacture printed on the lable) If you want to go into it more, take the lower drawer out and remove the 6 screws holding the panel to the floor inside the fridge, then slide out the floor panel. Look at the coils in there, and if you see a ball of ice on the left hand side, you have a freon leak and the above repair is what youll need to to. if its older than 5 years, ecpect to pay about$500 to have it fixed...it's a mojor pain. If its less than a year out of the 5 year, call subzero...theyll probably take care of it for you anyways. Good Luck!

Posted on Jul 18, 2007

  • Corey Grove Sep 04, 2012

    I have the exact same problem, but my subzero does not have the on/off switch on the keypad. Any suggestions?

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1 Answer

Side by side freezer is 20-30 degrees. could problem be a gas leak in compressor ? how do you check the compressor without installing a port to check the freon ?


You cannot add refrigerant. Only an EPA Certified Technician can do this.
Most of the time the problem is a fault with the defrost causing the coils to Freeze up preventing cold air from properly circulating.
Also be sure the condenser is clean.

1) Pull the refrigerator away from the wall and unplug it. (If your refrigerator has front legs used to level the appliance, push these upward and set your refrigerator on its wheels before moving it.) Or, if it's a built-in model, turn off its circuit breaker.
2) Remove the cover panel to reveal the coils and cooling fins. On most models, the kick plate or top trim plate simply lifts off. You may have to remove a few screws to remove a back cover.
3) With a long, narrow nozzle on your vacuum, or a refrigerator coil brush-a special long- handled brush that looks somewhat like a bottlebrush-clean out all the dust and debris. Be careful not to bend or dent the cooling fins.
4) Replace the cover, and then plug the electrical cord back in or turn the circuit back on. Push the appliance back in place.
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The power off/on switch is the reset proceedure on most Sub Zero's however, it initially comes on when the unit senses the temperatures are too high, leaving the compressor.
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