Defrost thermostat

Defrost thermostat

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Thread: Defrost thermostat

  1. #1
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    Default Defrost thermostat

    Have a GE fridge that calls for a defrost thermostat with a rating of 60-30. I have one that is rated 47-22F. This is a double wide. Any reason I can't interchange them? I am told these units have a 28 minute defrost cycle.
    Seems like a long cycle and a low kick back in number which in effect seems like it would make the freezer warmer longer than it is designed to be.

  2. #2
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    60-30
    47-22F
    Any reason I can't interchange them?
    The stat will shut off the heater 13º early on the 47º stat than the 60º stat.
    Might not fully defrost the evaporator shutting the heater off earlier.

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

  3. #3
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    I was thinking along those lines too. The guy I got it from mentiioned a 28 minute cycle which sounds long to me, but he has being doing this way longer than I have. Anyway considering the 22f for it to kick back on, I sorta thought it would take it longer to close therefore maybe it would work. I told him it should at least let me know if I am on the right track. I suspect the fridge only needs a stat to let it defrost.

    My thought is to install this one for now, see how it does and order the one called for this particular fridge if everything else works.

    Felt uncomfortable with this interchanging anyway. I do not normally do that. There is usually a reason a certain part is called for.


    28 minutes seems a long time for perishables to be heated repeatedly to me. I guess the lower the open and close temsp are, the longer the cycle on some?

    I was telling this guiy that it looked like this fridge and the GE I sol looked like they were supposed to have 2 heaters. He said in the northern states, they have to have 2 heaters. I assume these having one explains th elong defrost time. The ones with the low temp ratings anyway. The other has a stat that is rated like 160 on the high side. It may have a shorter cycle.
    Last edited by Boman; 10-12-2016 at 10:48 PM.

  4. #4
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    The other has a stat that is rated like 160 on the high side.
    A safety, prevents temp run away if that occurs.

    The guy I got it from mentiioned a 28 minute cycle which sounds long to me
    28 min would be middle area...many are 20 to 40 minutes long.

    I was telling this guiy that it looked like this fridge and the GE I sol looked like they were supposed to have 2 heaters.
    GE went to one heater on many models, didn't work properly and many have a dual element kit now to replace the one heater ones.

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

  5. #5
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    A "safety"?

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  7. #7
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    Is that not a defrost stat/ terminator? Closed at room temp? Must not be what I was thinking or it would close at the low temp and open at the high temp.

    Little confused.

  8. #8
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    You would see this more often on an electronic controlled defrost with a temp thermistor to tell the board what is happening or not happening during the defrost cycle and there is normally no defrost thermostat but will often have a safety or high limit thermostat to prevent damage in case the heater(s) ever stayed on too long.

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

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