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Frost at the back of freezer side of GE TFG 28PF Side by Side

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  • phil279 Sep 29, 2010

    Hi,
    the freezer cools properly I just have the problem with frost on the back inside wall of the freezer compartment . Please have a look at the picture I have just taken of the freezer. http://img440.imageshack.us/img440/3010/...

    Hope that helps.

  • phil279 Sep 30, 2010

    Thanks, I will do that later today. Is it easy to replace the Defrost thermostat ?

  • phil279 Sep 30, 2010

    i'm trying to locate the defrost timer but i can't find it. could tell me where it is.
    i took a picture of the fresh food compartment. http://img101.imageshack.us/gal.php?g=im...

    Thanks for your help!

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3 Answers

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  • Master
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This is normal it is an indicator that the pipes are okay and the coldness being generated in the compressor is being suppied into the fridge adequately. The frost usually appears on the pipes which flows from the compressor into the freezer.
Hope this solution has been helpful?

Posted on Sep 30, 2010

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  • Refrigerators Master
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The most likely cause is the defrost thermostat is not working. This should trigger the auto defrost circuit to start and keep the ice away.

see the diagram to give you idea of what is what.

Do you see any water in the defrost tray at the base of the frig?
If not then defrost is not happening.

My suggestion would be to empty the freezer and turn it off until the ice melts away. use towels to avoid flooding. Then apply a thin film of vaseline (not grease) to the freezer door gasket. Put everything back in and start it. Observe the ice formation for a few days. If you don't hear the defrost fan sound ( when the fridge is in the quiet cycle) and the ice forms again, I would suspect the defrost thermostat.

Hope this helps.

Posted on Sep 30, 2010

  • Sam Sep 30, 2010

    The defrost thermostat is located behind the back plate as you see in the circuit diagram I had sent earlier. You will have to take the plate out. If you are not very confident then best to call the technician. Needs to be tested to make sure the connection with defrost heater and fan is firm and callibrated.

  • Sam Oct 01, 2010

    The defrost thermostat should be in the freezer section on top of the plate where the ice is forming not the fresh food section. Have you seen the diagram I sent you yesterday?



    You have shown a photo of the fresh food section. I noticed you have already rated my solution with 2 thumbs and take it that you are not interested in me providing any further assistance on this.


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  • Refrigerators Master
  • 3,083 Answers

Here is what could be causing this problem:
Evaporator coils Poor cooling is often the result of a heavy frost build-up on the evaporator coils. You can't see these coils without removing a panel on the inside of your freezer. A sure sign that there is a build-up is the presence of any frost or ice build-up on the inside walls, floor, or ceiling of the freezer. Such a frost build-up usually indicates a problem in the self-defrosting system or damaged door gaskets. The refrigerator is supposed to self-defrost approximately four times in every 24 hour period. If one of the components in the self-defrosting system fails, the refrigerator continues to try to cool. Eventually, though, so much frost builds up on the evaporator coils that the circulating fan can't draw air over the coils. There may still be a small amount of cooling because the coils are icy, but with no air flow over the coils, cooling in the refrigerator compartment is quite limited. Here's an inexpensive, though inconvenient, way to determine if the problem is with the self-defrosting system. Remove all of the perishable food from the refrigerator and freezer, turn the thermostat in the refrigerator to Off, and leave the doors open for 24 to 48 hours. (Be sure to have several towels ready in case the melting frost and ice causes the drip pan to overflow). This allows the refrigerator to defrost "manually." When the frost and ice build-up has completely melted away, turn the thermostat back to a normal setting. If the refrigerator then cools properly, it indicates a problem with one of three components in the self-defrosting system: The defrost timer The defrost thermostat (also called the bi-metal switch) The defrost heater If it still does not cool properly, there may be a problem with the refrigerant level or the compressor. You may need to consult with a qualified appliance repair technician to further diagnose the problem Go to this site, and pick your model number (off of unit)- and you will get some diagrams and parts lists for your model: http://www.appliancepartspros.com/partsearch/modelsearch.aspx?model=TFG 28PF A friend of mine told me a trick that can keep the evaporator coils from icing up. He said it's simply wrapping a piece of 14 or 16 guage wire to connect the two evaporator coils. He says this will work, so it might be worth a try. Good luck, and hope this helps!

Posted on Sep 29, 2010

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Posted on Jan 02, 2017

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SOURCE: I have a GE Profile TFG 28PF. 'DE' light flashes,

sounds like a defrost problem replace heater t stat and main board in back

Posted on Mar 19, 2009

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