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Thread: Pool pump won't turn on, only makes a humming noise and hot to touch?

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    CajunGuy's Avatar
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    Pool pump won't turn on, only makes a humming noise and hot to touch?

    Yesterday I went to turn on my pool pump and it wouldn't turn on, it would only make a humming noise when I would flip the switch to turn it on. The pool pump and SWG are wired to the same timer and breaker. The breaker was NOT tripped. One thing to note was that the pool pump motor was really hot to the touch when I first started troubleshooting it when I realized the pump wasn't turning on. Any ideas what might the causing this? I've already removed the capacitor and will get that tested today. If the capacitor is bad, then I'm assuming that was the problem. If the capacitor is good, then I'm guessing I will have to remove the motor next? Any help or advice is greatly appreciated!
    15k Gallon In Ground Saltwater Gunite Pool and Spa w/ Overflow
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    Re: Pool pump won't turn on, only makes a humming noise?

    I have had this happen when I first open my pool in the Spring. The cause has been that the pump was seized up. I was able to manually get the pump to turn and then it worked fine (or at least well enough to get me through the season - new pump going in for me this year). But as you state, could be a problem with the pump motor.
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    Re: Pool pump won't turn on, only makes a humming noise and hot to touch?

    It sounds to me like the motor is stuck
    18x36 Vinyl, sports depth, 8' Roman steps at each end. Hayward 1.5hp 2speed pump, catridge filter, 2 skimmers, no main drain, 3 SR Smith Treo LED lights

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    CajunGuy's Avatar
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    Re: Pool pump won't turn on, only makes a humming noise and hot to touch?

    If the motor shaft doesn't spin freely, then can I assume it is seized and needs to be replaced? So you don't think it could be the capacitor? How long do pool pump motors usually lasts before they have to be rebuilt or replaced? 3-5 years?
    15k Gallon In Ground Saltwater Gunite Pool and Spa w/ Overflow
    Dolphin S200 Pool Cleaner
    Main Filter Pump - 1.5HP Pentair Whisperflo connected to Triton II Sand Filter
    Spa Pump - 2HP Pentair Whisperflo w/ 2HP Polaris Spa Air Blower
    Resilience PSC3 SWCG

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    CajunGuy's Avatar
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    Re: Pool pump won't turn on, only makes a humming noise and hot to touch?

    So I just had the capacitor tested and it is good, so I'm assuming I will need a new motor? Are the "energy efficient" motors worth the extra costs?
    15k Gallon In Ground Saltwater Gunite Pool and Spa w/ Overflow
    Dolphin S200 Pool Cleaner
    Main Filter Pump - 1.5HP Pentair Whisperflo connected to Triton II Sand Filter
    Spa Pump - 2HP Pentair Whisperflo w/ 2HP Polaris Spa Air Blower
    Resilience PSC3 SWCG

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    Join Date
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    Re: Pool pump won't turn on, only makes a humming noise and hot to touch?

    The replacement motor needs to match the original or it wont't mount to the pump housing correctly, unless you have a way to control a 2 speed it won't help.
    18x36 Vinyl, sports depth, 8' Roman steps at each end. Hayward 1.5hp 2speed pump, catridge filter, 2 skimmers, no main drain, 3 SR Smith Treo LED lights

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