Question about GE Hotpoint Top-Freezer Refrigerator

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GE refrigerator warm freezer cold

My GE TXB25PAYGRWW is not cooling well in the fresh food section (60 deg F) but is cold in the freezer section ( about 10 deg F) . The back of the freezer section is iced up . Should I defrost then try again before delving into checking the defrost timer and defrost heating . How do I get to thos componests on this model . All help is welcome - Thanks

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  • rkpatt Aug 03, 2008

    GE TBX25PAYGRRW warm fridge,cold freezer (defrost heater fuses ?)



    I have checked the defrost thermostat (warm and cold ) and defrost
    heater and both are OK. However I was not getting power (even with
    defrost thermostat shunted ) to the terminals of the defrost heater and
    was puzzled until I found the wiring diagram inside the panel that
    housed the defrost control ( defrost timer ). After looking at the
    wiring diagram I noticed that the wiring pigtals to the defrost heater
    for this model are fused so now I guess have to cut them and and check
    for continuity . If fuses (or fusible links )are blown, I guess it is
    pretty safe to presume that the problem is limited to defrost heater ?


    Any other suggestions are appreciated .


    Thanks

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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.

Posted on Apr 17, 2009

  • 1 more comment 
  • Farley Redfield
    Farley Redfield Apr 17, 2009

    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.

  • Farley Redfield
    Farley Redfield Apr 17, 2009

    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.

  • Farley Redfield
    Farley Redfield Apr 17, 2009

    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.

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Hi and welcome to Fixya. When a food section of a refridgerator warms up it is a sign that the unit is not defrosting or there is an air flow problem.

This can be caused by the following components:

1. The defrost timer
2. Defrost bi-metal 60 Deg thermostat
3. Heating element
4. Evaporator fan failure in the freezer compartment

Sometimes the defrost timer will just stop advancing for some reason and ice builds up in the evaporator coils that restircts airflow from the evaporator fan so the food section warms up.

The most likely failure is the defrost timer.

You can see if your uint will cool properly after a good defrosting by doing this:

1. Unplug the unit and unload the freezer section
2. Place a fan blowing into the freezer for about 2 hours. (it will make a water mess so be prepaired)
3. Plug in / restart the unit and monitor the temperature for the next 48 hours (it should be normal or near normal) After 48 hours the food section temp will start to raise again due to ice build up.
4. If the temps return to normal then the unit is not defrosting properly and will need repaired.

You can find replacement parts here:

http://www.partselect.com/AdvancedModelSearch.aspx?ModelNum=KSRB22FHBL01&mfgModelNum=&fkMfgID=3

From the model number you gave the defrost timer is Item 6 of the control diagram

http://www.partselect.com/PartDetail.aspx?Inventory=372261&SourceCode=1#

It can also be found here:
http://www.repairclinic.com/Appliance-Parts?s=t-KSRB22FHBL01-%3d%3d&z=50

http://www.repairclinic.com/SSPartDetail.aspx?s=t-KSRB22FHBL01-%3d%3di844415&PartID=844415

I did not of course diagnose the unit in your home. The part above is the most common failure. Given the cost of the defrost timer I would make SURE that it was defective before ordering.

In order to perform a continuity check of the rest of the defrost system components the bi-metal 60 Deg F thermostat must be above 60 Deg (or jumpered) to read the whole circuit. Jumpering the 60 Deg thermostat will not verify it is working correctly.

Hopefully this gives you a bit more understanding of why your unit is warming up in the food section.

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