A Family of Brands Forums Residential Residential Forum Humidistat (C128WHD) turns Ultra Aire on but not off

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  • #2712
    wxperson
    Participant

    I have a newly installed Ultra Aire 155xt which replaced an older DVA 400 unit.

    The replacement went well. The Humidstat I used before and also with the UA is a C128WDH. The UA unit turns on but will not turn off… unless I switch the circuit breaker.

    Does anyone have any ideas of what might cause this. I have 2 of the C128WDH humidistats and both of them show the same behavior… so I find it hard to believe it is a problem with the Humidistats.

    An image of the Humidity control unit is “attached” and also at

    Any help is appreciated.

    #3983
    wxperson
    Participant

    Here is the image (attached) I tried to include.

    Attached files

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