Rick Brower

05:03AM | 09/01/03
Member Since: 08/31/03
3 lifetime posts
ok, I've got an older Kenmore Coldspot Model #106.8678210....approx 12 years old i think. There is a good bit of water buildup underneath the frig, and its not where the drip pan is for the auto defrost. Its coming off of the copper tube that returns the refrigerant from the evaporator back to the compressor, to start the cooling cycle again. On this particular unit, the condensor is mounted vertical along the backside. The evap return line runs underneath the condenser, and is wrapped in insulation. Near the bottom though, where the line gets past the condenser, it has no insulation wrapped around it. That part of the return line gets covered in white frost, and then it all melts when the compressor turns on and heats up the surrounding air. The frost drips on the floor. I checked another refrigerator, and it has the same amount of insulation. Its bare line doesn't frost up like the Kenmore does, so I know that is the source of the problem. What causes this, and how can I fix it? Thanks alot


08:35AM | 09/01/03
Member Since: 11/11/02
2271 lifetime posts
** Its coming off of the copper tube that returns the refrigerant from the evaporator back to the compressor **

That line is called the "heat exchanger" and is not one line but actually 2, a very small "capillary tube" and a 1/4" or 5/16" OD "suction line".

Those 2 lines are soldered together at the factory. Over time the solder holding them together can break down and allow the lines to separate. When they do, frosting will appear on the larger suction line.

It is not possible to resolder those lines with refrigerant still in them so there is a repair kit available (see the following link) to remedy such a problem without tapping into the refrigeration system. The kit comes with instructions so the fix can be done by most fairly handy persons.

LINK > Refrigerator Heat Exchanger Repair Kit

Dan O.
The Appliance Information Site


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