Sub-Zero 650 freezer (bottom) too cold. Tried to adjust warmer but keeps heading down to -14 to -20 deg. F
Probably bad control board. check this. push the on/of key. the whole ref and freezer nedd to stop. if you hear the compressor in the upper part of the unit or the fan. your contol board need replace.
My freezer temperature read minus 19 degrees and the compressor ran continuously. I bought a new controller board from Sub-Zero's distributor ($250) that fixed the problem. Being an engineer I troubleshot the failed board. The relay driver IC, Part # ULQ2003A, had failed keeping the relay that turns on the compressor activated. The part is available from Digi Key for 61 cents. What a shame to throw away a complex circuit board due to a cheap part failing.
Hi,
There can be many reasons why your
refrigerator is freezing your food. To see what could be happening
and to figure out how to possibly fix your problem. Take a look at
this tip which contains many of the causes and solutions to fix the
problems.
Refrigerator
is Too Cold and Freezing Food
heatman101
1,284 views
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