Question about Kenmore 50522 / 50524 Side by Side Refrigerator

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Location of defrost control unit

Defrost control

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  • Anonymous Apr 17, 2009

    unit cycles but warmed up over a few days after setting fridge side to less cold. Now freezer is 33 degrees. Just otated what may be the defrost timer behind kick plate. Fridge seems to be running again. Is this normal?



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The defrost timer / or board will never be in the Freezer. Other than that it could be in the refrigerator section behind a plastic cover or metal cover on the back outside. It could also be under neath the front corners or center of the front kick plate.

A timer you can turn the cam clock wise til it clicks. A board will depend on the manufacturer as to how to send into defrost for a test. A sensor on the defrost type board may be required to by-pass into a defrost.

The freezer section has the only cooling coil. It sounds like it is blocked with frost and thus wont let the air circulate from freezer to refrigerator.

There is a defrost timer, (or board), a defrost heater, and a defrost safety thermostat. Any One of these or a combination of 2 can be your problem. If you have a energy efficient model that has electronic controls then you will have a board. The procedures for checking the circuit on a board vary by manufacturer of the board used and manufacturer of the appliance.

The defrost heater always has resistance and is attached to the freezer coil.
The defrost thermostat is also attached to the heater electrically, unless it is an electronic sensor type. Sensor types have a range of resistance that needs to be known to check and varies slightly with the temperature of the sensor.

If I haven't lost you here you maybe equipped with the life experiences that will allow you to do most of these checks. If its over your understanding I recommend you contact a reliable technician.

If this helps you please rate me as high as you can and thank you for using fixya.l

Posted on Apr 17, 2009


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Hello Darren;

My name is Peter. I am a retired field service refrigeration technician.

You did not provide a model number of your unit. The model number is located on a label on the upper inside wall of your fresh food section. So I can only be general.

1.) Control Board - Many of the defrost cycle modes are programed into the main control board.

2.) Mechanical Defrost Timer - Some units with the controls on the top in the fresh food section have a mechanical timer. Here, it is a hole on the left. Using a large flat head screw driver you can trip the timer, turning clockwise one click at a time.

Notice the slotted hole on the left.

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The part comes with a 365 day, any part, any reason return policy.

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Location 23 in that photo is the timer part Number=> 215846602 Defrost Timer


Some model's have the=> 240375803 Adaptive Defrost Control

Either way should you have questions I will be here to help you. Please rate this solution, Thanks, Sea Breeze

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The defrost is not working.This happens due to the evaporator coil in the inner section of freezer is got blocked by ice .--------

Try manual defrost reset procedure: ----

First unplug the unit from main power outlet. Then empty whole unit completely. Then keep both the doors open. Wait for 24 hours. All the ice collected on the coils and in the freezer section will get melted. Clean the water from the sections. Then Connect the power cord of the unit to main power outlet after 24 hours/.Then set the temperature to normal in both fridge and freezer section. It will take near to 4 hours to get run in its proper cooling cycle. Then check, if the problem returns again. If the same problem occurs then it's defrost problem. The defrost board and the defrost thermostat/heater is not functioning properly and it has to be checked and replaced.


The procedure of this unit is as follows: --- The compressor starts then it cools the freezer section. When the freezer reaches its cooling level the defrost cycle starts functioning. In this cycle the fan in the freezer section starts running and the cool air in the freezer section is passed to the refrigerator section and the refrigerator section gets cold. The air from freezer to refrigerator passes from the section, in that section the damper is located. Now this problem which you mentioned. In this problem the freezer thaws, this happens if the thermostat is not functioning or the heater is not heating. Then the ice starts getting collected on the evaporator coil. The evaporator coil is at the internal section of freezer. If too much ice gets collected then this ice blocks the fan in the freezer section from functioning and this blocks the damper section with ice getting collected there. This all procedure is controlled by the defrost board of the unit.


So first try reset procedure.If that is not helping then defrost assembly parts are to be checked and replaced.The defrost thermostat is located in the freezer section beside the evaporator coil.The defrost heater is located in the freezer section beside the evaporator coil.And the defrost control board is located in the fridge section.-------------

you can get the required parts from online sites like:--- or from searspartsdirect online site.---------This will help.Thanks.Helpmech.

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