Question about Little Giant Plumbing

Open Question

Little Giant VCMA 15UL pump will not stop

This morning I came down to the basement to find the pump running and running yet only bubbles and some water were showing in clear discharge tubing. I took off the lid and there was next to no water in tank yet pump still continued to run, so I unplugged it. It is now as if the micro switch has been reversed, the pump works continuously when empty, but if I fill it, the pump stops.

Posted by on


3 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Little Giant Condensate VCMA-15UL pump. Pumping when the float was down.

new pump

Posted on Nov 12, 2012

  • 170 Answers

SOURCE: Little Giant Condensate VCMA-15UL pump. Pumping when the float was down.

Little Giants are noted for having faulty float switch problems----even the new ones----a major HVAC company I worked for discontinued using them because of this----they remove 1 to 2 years worth of installed pumps and substituted another to because of warranty no heat/ac/flooded floors call backs and returned all of them to the mfg including all of the stock they had---for life of me I can't remember the name of the new ones---when the float failed it would shut down the furnace or ac and usually flood the floor by NOT pumping --- being a service warranty----the pump was replaced not repaired---they probably could of been repaired though with another float switch such as what could be done with yours---that's all I got--good luck

Posted on Mar 03, 2015

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

Condensate pump runs but does not pump

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

Dec 28, 2013 | Little Giant VCMA-15ULST, 1/50 HP, 65 GPH...

1 Answer

Little Giant 554455 VCMA-20ULS 230V 20' My pump runs when the float is down low in the tank and comes off when the float is high in the tank. So it runs continuous. Has something gone wrong and...

The float switch went bad... probably because of the could replace it, but the parts are hard to get and with the time involved it will be easier and cheaper to replace it...


May 29, 2011 | Little Giant 554455 VCMA-20ULS 230V 20'

1 Answer

How do I wire the safety overflow switch to my furnace humidifier thermostat? I have a Little giant VCMA-20ULT and a Aprilaire 700.

The overflow switch needs to be wired in a manner that interrupts the HOT (black?) side of the wires going to the water inlet valve or it's circuit.

Feb 28, 2011 | Little Giant VCMA-20ULT 80 GPH - Automatic...

2 Answers

My Little Giant, Model VCMA 15UL, condensate pump is cycling on and off very frequently. It starts and runs for about five seconds and then stops. It repeats this cycle about every 30 seconds. When this...

Thank you for posting your question here on

Replace the check valve that is part if the discharge hose barb. When it fails the water trapped in the vertical section of the tube comes back into the tank and cycles the float on again causing what you describe. The best way to confirm this would be to watch the water level as soon as the pump shuts off and see if it climbs without any other source of water coming into it. If it is not rising then the issue is with the float itself and is not worth fixing; replace the unit in that case.

If this answer does not fix your problem, please comment with additional details prior to rating the answer. You may also contact me thru our website at Positive feedback is appreciated once your problem is solved!


Feb 15, 2011 | Little Giant C20ST Condensate Removal Pump...

1 Answer

My little giant 554425 will not come on

Either the float is stuck or the pump is stuck...
To release the float a good shot to the side of the pump is all that it will take....
If that does not work then a few screws and the top will come off.. the pump is a very simple spinner.. make sure ther is nothing jammed in there...
if that all checks out replace the unit, the motor is shot....
you should be able to find a new one at a HVAC supply house for around fifty bucks...or check www, for a replacement condensate pump.


Apr 07, 2010 | Little Giant 554425 VCMA-20ULS 115V 20'

Not finding what you are looking for?
Plumbing Logo

Related Topics:

50 people viewed this question

Ask a Question

Usually answered in minutes!

Top Little Giant Plumbing Experts

Mack Baxter

Level 3 Expert

383 Answers


Level 3 Expert

2527 Answers

Gary Nitowski

Level 2 Expert

325 Answers

Are you a Little Giant Plumbing Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides