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    ltweedie's Avatar
    ltweedie Posts: 1, Reputation: 1
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    #1

    May 19, 2010, 09:11 PM
    I have a RD-900 Rain Dial that uses a Hardie transformer #201902. When I try to run
    When I try to run my RD-900 Rain Dial sprinkler system, it will run for about 4 minutes then it blows the GFI. I think I might need a new transformer, what do you think?
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
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    #2

    May 19, 2010, 09:36 PM

    Transformer, probably not.

    Try this:

    The system likely has a 24 VAC secondary.

    Disconnect the secondary

    Either connect two 12 volt automotive bulbs that draw 1-2 amps at 12V about an amp in series to the secondary alone. See if the GFCI pops.

    I'm thinking more of an outdoor/underground issue.
    Missouri Bound's Avatar
    Missouri Bound Posts: 1,532, Reputation: 94
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    #3

    May 20, 2010, 02:08 PM
    A ground fault on the secondary wouln't trip the GFCI.
    briefbud's Avatar
    briefbud Posts: 1, Reputation: 1
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    #4

    Sep 12, 2012, 12:08 PM
    I have a rain dial rd900 and I can't seem to get it to power up at all?
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