Hotpoint FF91 Mistral Fridge/Freezer

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Viewing 7 posts - 1 through 7 (of 7 total)
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  • December 15, 2004 at 10:07 pm #7123
    ipoole
    Participant

    Hi There
    My first post on here. I`ve been called out to a Hotpoint Frost Free FF91. Everything appears to work OK apart from the fact that the fridge thermistor doesn`t appear to sense the fridge temperature, hence the compressor keeps running and eventually the evaporator ices up resulting in the temperature in the fridge rising. I`ve changed the thermistor but it didn`t cure the problem. Any ideas?

    December 15, 2004 at 10:54 pm #121500
    Simon46
    Participant

    Re: Hotpoint FF91 Mistral Fridge/Freezer

    Is the fan running in the freezer? Also does the light go out when fridge door is closed?

    December 16, 2004 at 7:01 am #121501
    ipoole
    Participant

    Re: Hotpoint FF91 Mistral Fridge/Freezer

    Yep, the fan is running, the light goes out when the door is shut, it`s just that whatever the temperature in the fridge the display reads 19oC, and eventually the temp does rise to 19

    December 16, 2004 at 9:06 am #121502
    Ray9500
    Participant

    Re: Hotpoint FF91 Mistral Fridge/Freezer

    I’ve found that replacing both the thermistors in the freezer cures a multitude of sins 😉

    Ray

    December 16, 2004 at 8:59 pm #121503
    roly16
    Participant

    Re: Hotpoint FF91 Mistral Fridge/Freezer

    Have you checked continuity across the fridge thermistor from the pcb itself to ensure there’s good contact at the edge connector? Geoff

    December 16, 2004 at 9:27 pm #121504
    clyde
    Participant

    Re: Hotpoint FF91 Mistral Fridge/Freezer

    The evaporator thermisor is most likely at fault part no 2601683. It doesn’t like moisture can provide dodgy readings!

    if you do a resistance check of the thermistor the approx readings should be

    +20’C 3K ohms
    0’C 9K ohms
    -5’C 11K ohms
    -20’C 26 K ohms

    Hope this helps

    Clyde

    December 17, 2004 at 9:02 am #121505
    ipoole
    Participant

    Re: Hotpoint FF91 Mistral Fridge/Freezer

    Thanks for your help everyone. I going to also replace the thermistors in the freezer. I`ll let you know the result next week

    ipoole

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