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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.
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.
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.
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