Question about Sub-Zero 650 / O Bottom Freezer Refrigerator

2 Answers

Refrigerator not cooling properly

On our Sub-Zero 550 (bottom freezer) the refrigerator section temperature bounces all over the place. The freezer section seems to stay at a fairly constant temperature. The upper coils, fan and all have been cleaned. Are we looking at an electrical problem possibly?

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  • Anonymous Jul 07, 2008

    refrigerator section not keeping food cool enough. The lowest temp I can get in the refrigerator compartment is 48 deg.

  • Anonymous Mar 16, 2014

    my sub zero refrigerator will not cool down

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2 Answers

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You may have a low freon condition in the fridge section. Look to see if you have an ice block building up on the rear wall towards the lower left side. If so, you are low on freon and the ost likely culprit is a leaking evaporater. The best way to tell if you are low on freon for sure is to take out all the shelves, remove the light cover, then the 2 screws holding the fan cover, and then remove the back wall. You wont be able to pull it all the way out cause the cold control is attached to it for the freezer and fridge so be careful. Turn the fridge control all the way up to 10 and wait till the compressor is running. you can tell if the compressor is running by pushing in the little switch on the top of the door frame and seeing if the fan runs(one switch is for lights, the other for fan) if it runs the compressor is on. anyway watch the coils and see if they develop frost all the way from top to bottom. If they dont you are low on freon and are ooking at about a $600 repair. if it does frost all the way you may have a bad cold control or a stalling fan motor up by the condensor on top. The best way to tell this is the next time the fridge feels warm, sheck the frame around the door seal and see if it is hot to the touch. If it is you almost surley have a bad condensor fan motor. Hope you can wade through all tis to find the answers. Good Luck!

Posted on Feb 24, 2007

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Here is what I did wrong with my Sub-zero model 550. The switch for my fridge light went bad. So like the dumb old fixer uper like myself I bought two swithces and replaced the one nexed to it....daaa. the next day the fridge wasn't cold. so i went through the garbage to get the other switch and put it back. All is well, Lession learned.

Posted on Sep 01, 2007

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