Sump Pump Stops Pumping In High Water - Plumbing - DIY Home Improvement | DIYChatroom

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Old 08-08-2011, 07:34 AM   #1
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Sump pump stops pumping in high water

I have a pedestal sump pump. It works great, unless there is a really hard rain and the sump fills up fast. The pump motor is running, but seems to not be pumping. If I toggle the float switch (off then back on), the water gets pumped out and the pump works fine again.

Any ideas why?


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Old 08-08-2011, 08:03 AM   #2
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Is there debris at the bottom of the sump, perhaps hiding in the pump inlet?

Stopping the pump for an instant might happen to dislodge the debris temporarily.

Or maybe the impeller or other parts need tightening where now they sometimes work and sometimes slip.


The good conscientious technician or serviceperson will carry extra oils and lubricants in case the new pump did not come with oil or the oil was accidentally spilled, so the service call can be completed without an extra visit.

Last edited by AllanJ; 08-08-2011 at 08:06 AM.
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Old 08-08-2011, 09:25 AM   #3
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Hi AllanJ, thanks.
Yeah, there was debris at the inlet and I cleaned it out. But, maybe there is some more, I'll check...

And I'll check the tightening too, but it should be ok because I just put this new pump in 2 months ago.
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Old 08-10-2011, 05:00 PM   #4
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I adjusted the float to kick on shallower, and this solved my problem. I think what was happening is when there was a lot of water being pumped up at once, and the drain was getting full and the stop valve not closing.
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