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I have a Samsung refrigerator model rs2555sl and the freezer is working but the fridge is not. The fridge goes from 57 to 34 and back to 57. Is the problem the thermister or something else?

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  • Roger L Nov 20, 2009

    Thanks for the advice. I removed the refrigerator thermister and when I did the temperature is now stable at the set 34 degrees. Everything is staying cold in the draws in the lower part of the fridge. I should have the replacement part by Monday. I think the thermister was the problem. I will let you know.

  • Roger L Nov 24, 2009

    Replacing the fridge thermister did not solve the problem. Is the control board your referring to the main controls on the freezer door on the front of the fridge? I did the self diagnostics and the code I got was not in the manual - the middle line on the second 8 lit up. I also checked the load operation and #1, 6,8,9,14,15 lit up. 1 = R-Fan, 6 = low temperature mode, 8 = Comp, 9 =F-Fan High, 14 = Dispenser-Heater and 15 =Damper. I'm not sure what all this indicates. Do you still think it is the control board?

    Your advice and expertise are appreciated. Thanks.

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If you have no air flow to the fridge, check the inside back wall in the freezer. if there is frost on it or it crunches when you press on it, your evaporator coils are iced up. this can be due to either bad door seals, clogged condensate drain (under the coils), lack of airflow on the coils (bad fan), or low refrigerant.

Posted on Nov 24, 2009

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Hi, the problem is not likely the thermistor but more likely the main comtrol board at the back of the unit. The Samsung/LG made fridges have had a revision to their control board just recently for 2 "disclosed" reason's. (Call me skeptical but I don't believe there is ever full disclosure regarding revision's or rework's...only what they deem necessary) The most common being...following it's auto defrost cycle the unit start's into it's cool cycle as it should however, when the evaporator fan motor start's as it should as well, there is so much moisture from the defrost the fan starting causes moisture to in effect "spray" moisture all over the freezer back wall and ultimately jamming the fan itself over a period of run time and as a consiquence the temperature in the fridge rises. That could be your problem. What they've (Samsung/LG) done to resolve the issue is revised the control so the start of the evap. fan is "delayed" by several minutes thus allowing the moisture to freeze before the fan start's. If you order the original part number you'll get the reworked control. Unfortunately they have not issued a recall to my knowledge so it'll cost you. You may get some facourabls result's by contacting Samsung customer service, although they may also insist on sending their autorized servicer to you...at your expense perhap's as well being a condition of repairing it "free". **I do not claim to speak for Samsung or to know, I am a tech. at Sears, so it is only my assumption as to how they handle you as a customer.** I have had many with this issue so I can say from experience the problem is common. The part number I came up with is DA41-00104M, I'd ask you to double check that at your local part vendor or on line depot though. It may differ based on your serial number as well as model. The serial number is what is used to determine when the unit came off the assembly line, hence what version of control is/was being used. I hope that help's, let me know either way and good luck. macmarkus :)

Posted on Nov 21, 2009

  • Mark MacDonald
    Mark MacDonald Nov 25, 2009

    Hi,



    The control I was referring to is at the back enclosed behind a cover held in place by several screws as I mentioned in my previous reply.



    Please read my previous reply as I believe you need a control as I stated in the beginning, it is very, very rare a thermistor goes bad and can be easily checked with an ohm meter to dismiss or confirm in any event before replacing them.



    I`d also advise being wary when a tech want`s to replace a thermistor at your expense...it likely won`t fix anything. Look into your control board, but there has been a revision and you may want to contact customer support at Samsung, refer to your manual or on-line for contact information.



    Let me know if I can be of any further assistance to you. Good luck.



    macmarkus :)

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Hello. i can assist you. All refrigerators have a thermostat to maintain the proper temperature. These are usually very simple devices. When the refrigerator reaches the set temperature, the thermostat interrupts the electricity flow to the compressor, which stops cooling. As you indicates, it is most likely that your thermostat needs to be changed.
if you want to change the thermostat yourself, read how at this link and then decide if you want to try it. http://www.partselect.com/repair.aspx?appliance=refrigerator∂=replace-defrost-thermostat

Posted on Nov 18, 2009

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