Zanuzzi Freezer ZUF105W (frost free)

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  • September 23, 2009 at 4:41 pm #48810
    JOHN CLARKE
    Participant

    Evaporator iced up. De-frost heater OK, cut-outs OK, has anybody got any clues why this happens, does anybody have a wiring diagram please.

    September 27, 2009 at 7:27 pm #297802
    TheSpinDoctor
    Participant

    Re: Zanuzzi Freezer ZUF105W (frost free)

    Most likely the NTC temperature sensor has gone out of calibration. This happens when they absorb moisture & this causes the defrost cycle to be suspended, hence the excessive frost build up on the evaporator. The only thing other than that I can think of if you are correct in that the other components are OK is the main control board but I think this unlikely.

    I hope this is helpful to you.

    September 29, 2009 at 10:03 am #297803
    trotter
    Participant

    Re: Zanuzzi Freezer ZUF105W (frost free)

    Blocked drain?

    September 29, 2009 at 4:30 pm #297804
    TheSpinDoctor
    Participant

    Re: Zanuzzi Freezer ZUF105W (frost free)

    Always possible but not likely. I have had this on more than one occasion & it’s usually the NTC.

    September 29, 2009 at 8:00 pm #297805
    JOHN CLARKE
    Participant

    Re: Zanuzzi Freezer ZUF105W (frost free)

    Thankyou for your replies, I’ll go for the thermistor (NTC), thanks again.

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