Question about Little Giant VCMA-15ULST, 1/50 HP, 65 GPH - Automatic Condensate Removal Pu

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Condensate pump runs but does not pump

My Little Giant TP-15ULST (VCMA-15ULST?) condensate pump runs constantly without pumping down the full reservoir. If I tap vigorously on the top of the pump it seems to "prime" it(though I know it does not require priming. Anyway, it will then work for a few pumping cycles and then go back to running with no pumping. I opened up the pump and saw that the impeller was not connected to the shaft. Does it just connect by friction when water pushes up against it or is it supposed to have a firm connection? If so, what do I do? Glue it?

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  • Scott Long
    Scott Long Dec 29, 2013

    Okay. I super glued the shaft to the impeller and filled the reservoir about ten times (I lost count) and it pumped it out every time. I will give my final assessment tomorrow after it has had mor cycles. Thanks for your suggestion! Super glue is second only to duct tape. :o)



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I have only seen a couple but they were pressed on the shaft. Superglue might work.

Posted on Dec 28, 2013

  • Scott Long
    Scott Long Dec 30, 2013

    Thanks for the suggestion. After a day it is still working. It looks like the problem has been resolved.


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This fix will not last to long as the soap and warm water will soften the super glue

Posted on Dec 30, 2013

Testimonial: "I suspect you may be correct. I guess time will tell. However, when I first posted this it went under washing machines so I reposted it. This pump is a condensate pump for my gas furnace. Therefore there is no soap or warm water. Do you have a better solution?"


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SOURCE: I have a Little Giant VCMA-15ULST, and it seems

one word -disposable

Posted on Jan 24, 2011

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