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Testing the defrost heater in a GE refrigerator

Testing the defrost heater in a GE refrigerator

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Thread: Testing the defrost heater in a GE refrigerator

  1. #1
    Join Date
    Apr 2015
    Posts
    4

    Default Testing the defrost heater in a GE refrigerator

    I have the GE side by side, model gss20iemd CC

    And it is not defrosting. (It works fine for a few days, then refrig side gets
    too warm, then I defrost manually, by taking out the back cover, and everything
    is fine again for a few days.)

    I tested the defrost thermostat on the evaporator coil, it is a closed circuit, and it
    seems to be the type that is always closed, except for safety if it gets
    very hot.

    There is no defrost timer on this model.

    I removed the defrost heater, and tested the resistance, about 27 ohms.

    But is there another way I can test this, by connecting house current to the
    leads and seeing if it gets hot?
    I dont see any obvious breaks in the coils
    in the heater, the glass around them is obscured in some places, difficult
    for complete visual inspection.

    I was hoping for a more thorough test of the heater before checking the
    thermister?? temperature sensor. I guess my next step.
    Fred

  2. #2
    Join Date
    Feb 2012
    Location
    Canada
    Posts
    2,330

    Default

    Hi,

    I removed the defrost heater, and tested the resistance, about 27 ohms.
    Then it should be good...heater normally either works or doesn't work.

    But is there another way I can test this, by connecting house current to the
    leads and seeing if it gets hot?
    Sure you can...use some alligator clips and a test cord, plug into a normal 120 volt outlet to see if it gets hot.

    I tested the defrost thermostat on the evaporator coil, it is a closed circuit, and it
    seems to be the type that is always closed, except for safety if it gets very hot.
    Correct, only will open if the temp in the evaporator area gets way too hot.

    Stat is good, heater seems good...leaves...

    Testing the defrost heater in a GE refrigerator-thermistor-wr55x10025-00855830-jpg Temperature/defrost sensor (thermistor)

    AND

    Testing the defrost heater in a GE refrigerator-main-control-board-wr55x10942-01091473-jpg Main control board assembly with installation instructions

    ...as both have been upgraded and both are bad for being intermittent...doing both now will save headaches later on!

    jeff.
    http://www.applianceaid.com/
    Appliance Repair Aid

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