Blowing Gcfi

Discussion in 'Water Features' started by jd boy, Jun 2, 2005.

  1. jd boy

    jd boy LawnSite Member
    from nw ohio
    Messages: 173

    so we installed this pond last year, and it ran great for a year. Now, all of the sudden she calls and says the pump won't stay running. It is an aquascape 4500 in one of their skimmers.

    i tried all the obvious stuff (check for obstructions, spun the impellor)

    Does anyone have any reason why this pump would be tripping the reset in the outlet?
  2. TLS

    TLS LawnSite Fanatic
    Messages: 7,943

    Somewhere in your wiring from your GFCI to your pump (or the pump itself) you have an open ground. That or the outlet is faulty. They're not circuit breakers, they're ground fault interrupters.
  3. jd boy

    jd boy LawnSite Member
    from nw ohio
    Messages: 173

    if that were the case (an open ground) i would think it would have done this from the first minute we plugged it in. Why would it just start all of the sudden?

    This particular outlet is run on it's own circuit.
  4. Dirty Water

    Dirty Water LawnSite Fanatic
    Messages: 6,794

    Condesation may have caused the pump to begin to ground out on its casing. I'd pull the pump and redo all the wiring connections.
  5. jd boy

    jd boy LawnSite Member
    from nw ohio
    Messages: 173

    wiring connections? This is an aquascape pump that is pre-wired and plugged directly into a dedicated gfci outlet.
  6. freddyc

    freddyc LawnSite Senior Member
    Messages: 578

    GFI's are still rated at a certain you know what the actual load is??? A loose connection anywhere will cause the increase in current...or oxidized connectors will act like a resistor and reduce voltage, causing higher amperage.

    Check continuity between all the wiring and pump /motor casing. If this is run on its own circuit, check the breaker in the box.... check voltage at the pump itself, and finally, eliminate the GFI and go directly to the pump to find out if the GFI is faulty. Its likely theres a grounding problem but you gotta do these steps to narrow it down first.

    Is there anything but the pump in the circuit?? Make sure the homeowner didn't play around with it and re-connect it wrong too...people usually fool around before calling!
  7. n2h20

    n2h20 LawnSite Senior Member
    Messages: 503

    hi there.. you said it was about a year later and now trips the GFI? Does it trip the gfi as soon as you reset it or run for a while then trip it? f it takes a while i would say the pump is dying or deffective. as least that has been the case in my experience
  8. robhumit

    robhumit LawnSite Member
    from CT
    Messages: 5

    It's a bad pump. I had the same proplem. there was a problem with the 4500s last year. your dealer should know about it.

  9. BobR

    BobR LawnSite Senior Member
    Messages: 714

    DITTO - Bad Pump

    My AquaScape 7500 ran without problem for +- 3 months then the GFI started popping, plugged the pump into another GFI circuit and it also popped off.. Pump would run when plugged into a normal (non GFI) circuit till the unit heated up and the internal over temp switch again shut down the pump.

    Dealer warrantied with a new unit - no more problems.

  10. BGTIME

    BGTIME LawnSite Member
    from zone 5
    Messages: 21

    did you try plugging it into another outlet? That should tell ya which is broke.

    the 4500 and 7500 had some problems. I went through 5 7500's before they sent me 2 working units.

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