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  1. #14

    strange noise coming from new AH

    this new AH is so quiet, I can't even hear it come on when I'm downstairs.

    But, sometimes, when I'm upstairs in a room next to the unit, I hear a ZZZIINNNG noise as it starts up.

    I don't remember that noise in the old AH.

    What do you think?


  2. #15

    ZZZIIIINNNG Noise, anybody have a clue?

    It doesn't happen every time, just occasionally

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