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Thread: [FIXED] GE refrigerator is running too cold while display shows very high temperature

  1. #1

    [FIXED] GE refrigerator is running too cold while display shows very high temperature

    Model Number: PSS26PSTA
    Brand: GE
    Age: 6-10 years

    My GE Profile refrigerator m/n PSS26PSTA that is 6 year old is running too cold at about 30 degrees. The electronic indicators read the temperature inside is 60+ degrees. When I increase the temperature using the buttons it doesn't seem to produce any result. Please advise what could go wrong and it it can be done by a non professional (myself) thanks a lot, Daniel

  2. #2
    OK, so I did some pocking around and located the temperature sensor inside. It was all covered with ice that has accumulated inside... Also lots of ice and I mean lots behind the produce drawer. So now it makes sense. The temperature of ice is around 30-32 degrees and that what I was measuring as a temperature inside the refrigerator with a regular thermometer, but why the display says 65? Also, why the fridge ignored my command to increase the temperature when I punched it with the up/down arrows. Not sure what is at fault here.... waiting for your expert advice.

  3. #3
    Admin/Technician Doc Ryan's Avatar
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    Your refrigerator is a pretty complicated one to diagnose. It uses two evaporator coils (cooling coils) one in the freezer and one in the refrigerator section. The first thing that I would check is to see if the fan above the evaporator coil in the refrigerator section is working. If the fan is working, then I would check to see if the evaporator coil is defrosting properly. When it is functioning properly, the evaporator coil will NOT have a large amount of frost built up on the coil (post up pictures if you can). If the evaporator coil is frosted up, then I would first check the thermistor (temp sensor) as this is the most common thing to cause this problem. It can also be caused by a bad main control board too. To access the evaporator coil in the refrigerator you will have to take the whole "custom cool" unit apart.

    There was a service bulletin on this refrigerator that only affected earlier serial numbers (see attached pdf). It also has some instructions on taking things apart. This could be your problem too... but I would lean more towards a defrost problem according to your symptoms. Let us know what you find!

    Fresh Food Ice Ball Service Bulletin.pdf

    Also see this guide on How to test a GE thermistor

    This is the thermistor for your refrigerator:

    Temperature Sensor (Thermistor) - WR55X10025
    Ryan
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  4. #4
    Thanks a lot Ryan. I did, in fact had a large amount of frost built up on the evaporator coil. So the first thing I did which was the easiest and the cheapest is to buy a new thermistor. I replaced it on Sunday and also melted all of the ice with a fan. So far the electronic readings from the refrigerator are identical to the readings from the mechanical thermometer. I think that was the original problem. Since the ice was everywhere it was hard to say if I also had 'Fresh Food Ice Ball' issue, but I will keep an eye on the coil an update the thread should the fridge exhibit this issue later on.

    Once again, thank you for your advice and the documents!

  5. #5
    Admin/Technician Doc Ryan's Avatar
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    Thanks for the feedback, it is always nice when it is a cheap fix. It can take a while for the frost to build back up, so I would keep an eye on it for the next month, after that you should be in the clear. I will mark this thread as "FIXED", let us know if the problem reoccurs.
    Ryan
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