Question about Sub-Zero 650 / O Bottom Freezer Refrigerator

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Have a sub Zero side by side. Its 22 years aold. both Freezer and Fridge motor things in the the top unit have been replace. It is ONLY serviced by a Sub Zero expert. Black mildew is appearing in the crevices, on the edges of the crisper units and on the plastic lids of certain items . its doesn't seem to be toxic (?) or Very pervasive---its just obnoxiou & clearly not normal. And a pain to clean. What is the problem & how can I cure it. Iwash this thing about once a month thoroughly with a bleach solution. HELP!

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  • awe0171 Apr 06, 2011

    Thank you Keith,
    The door seal, upon examination, IS showing its age----tho' not from chlorine bleach which I would never use on gaskets---new gasket on order from our wonderful Subzero repair person.
    Thanks again.

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My guess without actually seeing it myself would be there is a leak of either water coming from somewhere or the door seal is bad allowing a moisture to build up.

If you are using a bleach solution on the door gasket.....this just may be the reason the seals are bad. Never use chlorine/bleach on any gasket or seal. It will ruin them.

You will need to check the gaskets on the doors. First ensure the doors are aligned properly.

The tops of the refrigerator doors should be even.

Now check for gaps or gasket rips/tears. The surface of which the door gasket seals must not having any gaps in it....check the entire diameter of the doors including the freezer door. You can use a mirror to check...it will make your job a bit easier.

Next ensure you do not have any water in either refrigerator section.

Please post results.

Keith

Posted on Apr 03, 2011

  • Keith Drake
    Keith Drake Apr 06, 2011

    Unit is 22 years old....nice to see someone getting their money's worth.

    Glad I could help.

    Best Regards....

    Keith

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