Grundig Gkn16820w E4 error code

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  • June 10, 2021 at 12:19 am #99654
    Ronnykk
    Participant

    Hello,
    Have a problem with my Grundig16820w, wondering if someone can help.

    Every few months ice builds at the rear of freezer, and I get e4 on the display.

    what could this problem be?
    problem with heater? Temperature sensor?

    Thanks

    June 10, 2021 at 8:57 am #477244
    electrofix
    Moderator

    E4 is just listed as defrost heater error

    you would need to check heater continuity first

    Dave

    June 11, 2021 at 2:09 pm #477245
    Ronnykk
    Participant

    Thanks Dave

    is it evaporator heater or defrost heater. And what’s the difference.

    https://www.grundig-parts.co.uk/fridge-freezer/catalogue.pl?ss=1&path=936707{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d}3A937016&model_ref=12056118&refine=Heater

    Much appreciated

    June 11, 2021 at 2:27 pm #477246
    electrofix
    Moderator

    i think its part no 5719650100

    you need to find it, disconnect it and measure it with a multimeter to see if its blown

    Dave

    June 14, 2021 at 12:15 am #477247
    Ronnykk
    Participant

    the temperature sensor reads 10.2 k-ohms where as the heater reads just 495 ohms.

    I pre-ordered (before measuring) the heater thinking that the problem was with the heater, but new heater similarly reads 508 ohms


    Is it safe to say the sensor is faulty and needs replacing?

    thanks

    June 14, 2021 at 11:18 am #477248
    Ronnykk
    Participant

    After watching some more videos, came to find out that resistance reading is not static and depends on temperature. So my old thermo resistance does seem to increase to 20k when submerged in ice. Does it still mean it’s faulty and should replace?
    thanks

    June 14, 2021 at 2:37 pm #477249
    electrofix
    Moderator

    temp sensor looks like its rated 10K ohm at 25 degrees C

    Dave

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