Question about Sub-Zero 650 / O Bottom Freezer Refrigerator

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Frost build up in freezer, on top front display panel only

Both fridge and freezer maintain temps 37 and 3 degrees respectively. However, we no longer hear motor running as it used to immediately after closing freezer door. Also it used to be very difficult to break seal and reopen freezer door when tried within a few seconds of closing it. Now, it's very easy to reopen immediately. Door seal appears to be in good shape and making clean contact all around door opening. Mfg date May98.

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  • Tom Talamo
    Tom Talamo Feb 15, 2014

    Unit is side-by-side not bottom freezer as shown in question post.

  • Tom Talamo
    Tom Talamo Feb 15, 2014

    Model is 632/O not 650/O

  • Douglas Henry
    Douglas Henry Feb 27, 2014

    I'm a little unclear as to where the frost is. you say the freezer, but there is no display panel in the freezer section. Or are you having frost in both the fridge and the freezer? Is the icemaker still working?

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Posted on Jan 02, 2017

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SOURCE: Sub Zero 550 Frost Build up in Refrigerator

This means you are low on freon. You will get an ice ball on the bottom left side in the back of refer.

dartmanc

Posted on Jul 11, 2008

  • 1 Answer

SOURCE: Door difficult to open

Simple fix! A small puddle of water near the fridge led me (indirectly) to this fix. Our model is a fridge only, no ice or water dispenser and nothing spilled inside. Upon closer inspection I found a narrow tray along the back wall above the crisper drawers with a drain hose leading under the unit. Apparently it's a condensate drain, a plugged one at that! I cleaned it out, yuk, and soon discovered it serves a dual purpose... as a vent to help relieve the pressure from the vacuum created immediately after closing the door. It has renewed our love affair with this fridge. Hoo Hoo!

Posted on Dec 18, 2008

sawdust46694
  • 398 Answers

SOURCE: SubZero 690: Frost builds up on ice chute flapper door

you have a bad seal, Take a dollar bill and slide it in between the door seal and the frig. slide it up and down to see if if has drag on it. If you find places it dont touch loosen the screws and adjust the hinges till it fits tight. In some cases you might have to tweak the doors if they need it.

Posted on Aug 11, 2009

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Hotpoint Future fridge freezer - freezer working well but top of the back of the fridge has a large build up of ice ??? And doesn't appear to be keeping the food cold enough


here are lots of things that can cause cooling problems. One of the most common causes of poor cooling in a frost free refrigerator is a defrost system failure. In such a case one or the other compartment may appear to be keeping proper temperature but that too may change in a short period of time. The fridge compartment's temperature rise is usually (but not always) the first to be noticed. Frost" and "Ice"
There is a difference between "frost" (a white, snow-like substance) and "ice" (usually clear and solid). When referring to what is seen during an inspection, please keep this distinction in mind as the possible causes for each are often very different. The Defrost System
Inspecting the (usually rear) wall of the freezer compartment for a frost build up is necessary. (In the case of many GE top freezer models, check the freezer's bottom panel.) If there is a frost coating on it, it is often a sign of excessive frosting beneath it. Sometimes however the evaporator cover panel will actually need to be removed (see the illustration below) before an excessive frost build will visible.
The refrigeration system's evaporator (cooling) coil is usually in the freezer compartment. This evaporator will periodically frost over and have to be defrosted by means of a heating system. When the defrost heating system fails, the frost can accumulate to such a degree that airflow throughout the appliance is hampered. There may be just enough air circulation to cool the freezer section but that will eventually stop too.

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