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Hi, I have a Samsung SR503NTS Fridge Freezer. It has stopped cooling the fridge section. The freezer section is working fine. I pulled the back out of the freezer compartment, exposing the cooling coils etc, which were partially iced up. I have defrosted this area, however the fridge section is still not cooling after 12H.

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  • fixya125 Sep 08, 2010

    Hi, It is a freezer on top, fridge below. It only has cooling in the freezer compartment and a fan in the freezer compartment. I just pulled the top back off the fridge section. There is an actuated flap that controls the flow of cold air and it moves ok. it opens full immediately after pushing in the door switch, and closes when the door is open.

    I have just left it in an open position and disconnected it to see if the fridge now cools. I am thinking that one of the temperature sensors is not working correctly somewhere.

    From googling it appears that faults are common with thermistors in these fridges (thanks Samsung). How can I test the thermistors?

    Thanks
    Steve

  • fixya125 Sep 08, 2010

    Please see my other comment ... sorry not sure how this system works

  • fixya125 Sep 10, 2010

    Yes I get cold air now from the freezer into the fridge, but the flap only opens for a few minutes and then closes again. It seems to think that the fridge is already cold, but it isn't.

    What now?

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Most samsung have a separate evaporator coil just for the fridge side. Check it out. If it's the other kind then The fridge gets its cold air from the freezer through a vent(damper) between the freezer and fridge.The fan in the freezer blows air through it. Make sure this fan is running. You may have to hold the door switch in for it to run. There is a flap you adjust with the fridge temp. control. Make sure it's opening and closing when you adjust the fridge temp.
The problem could be the electronic control if you have one or the mechanical linkages.

Posted on Sep 08, 2010

  • Charles T Nevin
    Charles T Nevin Sep 09, 2010

    With the flap open and the fan running you should get cold air to the fridge compartment.
    Concerning the ice build up. A light frosting is normal. It gets melted by the defrost heater when it's time. A partial covering of ice is a sign of the system being low on freon. A heavy covering all over the coil is a sign the defrost system isn't working.

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