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  1. #11
    Join Date
    Jun 2009
    Posts
    7

    Default Re: low voltage in bathroom exhaust fan

    Here is a diagram of the problem switch.
    When I remove the wire nuts at the broken fan fixture, I can measure a current at about 25 volts from black to white. On a whim, I reset the volt meter to AC1000 v, AC250v, AC50v and on each of these setting, the needle moves the same distance.

    Across the GFCI, it measures 140 v, across the working light switch it measures 140 v, across the switch to the fan is measures 25V, but it is the needle deflection as described above.


    [IMG][/IMG]

  2. #12
    Join Date
    Jun 2009
    Posts
    7

    Default Re: low voltage in bathroom exhaust fan

    I also checked the black to ground at all points in the circuit and each measures 140v.
    I did replace the switch, but alas I have the same problem.

    I visually inspected the wiring and it is intact for the parts that I can see.

  3. #13
    Join Date
    Jun 2009
    Posts
    7

    Default Re: low voltage in bathroom exhaust fan

    any further comments?

  4. #14
    Join Date
    Jun 2007
    Location
    Fayette County, Ohio
    Posts
    5,558

    Default Re: low voltage in bathroom exhaust fan

    First question, on the switch is there a jumper between the top and bottom switch on the hot side?

    Second, are you connected to the common on the GFI common screw or on the load screw?

    Third, where is the common for the fan usually connected.?
    Jack
    Be sure you live your life, because you are a long time dead.-Scottish Proverb

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