Question about Sub-Zero 642

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642s Temp Setting Does Not Work

I cannot set the temperature setting both on the fridge and freezer on the control panel of a 642/S. The control panel lights up the when does not show the temp. Is there a reset button? I can achieve a cold temoerature, but my refrig runs constantly. If I set it for 40 or 38 the refrig will sometime get down to 26. Both thermistors in the refrigerator were replaced. Do anyone know if I need to replace the control board?

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  • upallnight Sep 02, 2009

    had the service come and look at the sub zero. Both service said that there was a leak in the evaporator coil. First service wanted $2500.00 to replace the coil and compressor. Second service tested the compressor and said that it was still good and to replace the coil will be $588.00. Sub zero parts was used for the repair. Guess which one we went with?

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Possibly, but check your condensor before calling for service.

Posted on Aug 05, 2009

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The temp says 14 and 8 but should be -21 and 3? Can anyone help


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The freezer temperature can be set between -14°C (8°F) and -25?C (-14°F) to suit your particular needs. Press the freezer button repeatedly until the desired temperature is shown in the temperature display. Keep in mind that foods like ice cream may melt at -16?C (4°F). The temperature display will move sequentially from -14°C (8°F) and -25?C (-14°F). When the display reaches -14?C (8°F), it will begin again at -25?C (-14°F). Five seconds after the new temperature is set the display will again show the actual current
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