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Thread: Please check my GFCI logic

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    JayBauman's Avatar
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    Please check my GFCI logic

    Before I go drop a hundred bucks on a new GFCI breaker, please let me know if I'm thinking correctly:

    My pool, pumps, and electrical equipment are all only 1.5 years old. I have 4x 240V pumps, each with a unique GFCI breaker in my pool panel. This morning, I noticed that one of my pumps wasn't operating, even though my control panel said it was. I checked the electrical panel and found a tripped breaker (let's call it "A") that would not reset. After disconnecting power to my pool breaker box, I wired a different pump ("B") to the tripped breaker. Breaker "A" would still not reset. However, when I hooked Pump "A" up to Breaker "B", Pump "A" worked just fine. This would imply that both pumps (and their associated electrical wiring) seem to be OK, so Breaker "A" is suspect. I conclude that purchasing a new breaker should fix my problem.

    The breaker is a Square D 20 Amp Two-Pole GFCI Circuit Breaker. I don't mind spending $100 to replace it, as long as it's really the problem. I would rather NOT spend the hundred bucks and then later have to call out the pool electrician if this does not get me operational.

    Are my approach and logic correct? Thanks in advance.
    23' x 37' IG 18.5k gallon SWG w/ raised spa, Build Thread -->Here
    Wet Edge® Pearl Matrix®, Hayward® SwimClear™ 525 ft², Hayward® Goldline Controls® PS-8
    4x Hayward® TriStar™ pumps, Paramount PCC2000® ICS, TF-100 w/Speedstir

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    Mod Squad tim5055's Avatar
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    Re: Please check my GFCI logic

    Following your troubleshooting, yes breaker A seems bad.
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    TFP Guide

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    Re: Please check my GFCI logic

    Sounds like the breaker is bad. When you tried to reset it, did you turn it to the full off position then back on?
    Unknown make 18' above ground (bought used in 1999) Sparco sand filter. Hayward 100,000 BTu heater. 2 speed pump

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    JayBauman's Avatar
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    Sep 2014
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    Re: Please check my GFCI logic

    I've ordered another breaker; it will be here in Monday (thanks Amazon for 2 day shipping....even on holidays). Now that I think about it, this one tripped once before about 3 or 4 months ago. At that time, I was able to simply reset it. This time, it has definitely given up the ghost.

    I've got 6 of them in my breaker panel, and this is the only one acting up. What makes these things go bad after X amount of time? Are some just defective from the beginning?
    23' x 37' IG 18.5k gallon SWG w/ raised spa, Build Thread -->Here
    Wet Edge® Pearl Matrix®, Hayward® SwimClear™ 525 ft², Hayward® Goldline Controls® PS-8
    4x Hayward® TriStar™ pumps, Paramount PCC2000® ICS, TF-100 w/Speedstir

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