Question about Grundfos Plumbing

1 Answer

I have a grundfos pump for a household water tank. The red failure light keeps coming on. I can start it with a screw driver at the back but, after it pumps to build up the pressure it stops again and the red light comes back on. I have to keep starting it manually. do you have any ideas ??? thank you.

Posted by on

Ad

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

  • Contributor
  • 48 Answers

It sounds like there is sediment in the pump housing. Take it apart and clean out the area the impeller runs in or failing that change your pump

Posted on Mar 13, 2011

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
a 6ya expert can help you resolve that 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.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

No water


Does the motor turn it self off after a couple of minutes of no pumping?= ran out of water. If there is water up to the pump and still no water, check filter/s ( if there is any). Undo V band and check pump internals, impeller may be broken from shaft? When putting back together tap V band with block off wood or back of screw driver evenly as you do up the clamp to stop it distorting

Apr 14, 2014 | Grundfos Pumps Grundfos MQ 3-45 1 HP...

1 Answer

Grunfos ch2-50


Can you describe the pump you have? Is it used for household water or a sprinkler system? Typically a household pump will have a storage tank and a pressure switch. 90% of the problems with a pump not turning off is due to the pressure switch.

Oct 13, 2013 | Grundfos Plumbing

2 Answers

Grundfos MQ pump starts every 15 seconds


Pressure is bleeding back through the pump or system to the tank or well or where ever the water is coming from. Should be some sort of one way valve to keep water from going back to the source, mounted somewhere so that once pressure is pumped up, it will hold that pressure in the part of the system that has the pressure switch that controls the pump.

That or you have a leak where you can't see it. (Actually you do, it is just internal and not leaking outside the pipes!)

Nov 04, 2012 | Grundfos Pumps Grundfos MQ 3-45 1 HP...

1 Answer

I have had a Grundfos CME Booster pump installed for some ten months or so. We have a pump room alongside the 150,000 water tank. The inlet is suspended from a float within the water tank, and is about...


Hi Ray, did you ever solve your problem, I have a setup that sounds identical to yours and have the same problem, Grundfos are not been very helpful.

Oct 31, 2011 | Plumbing

1 Answer

I have a small Grundfos attached to a 10,000l water tank. The pump was totally submersed in the recent Brisbane floods. I hosed it out with fresh water, took the cover off and have let it dry out for two...


The next thing that I would try would be if it is possible, try to get either the motor end or the impellar end to rotate by hand, using a screwdriver or other tool. Maybe the bearings are somewhat rusted/seized together. If you can do it by hand, then it may work electrically.
Don't do anything by hand while it is powered up.
Let me know,
Gary

Jan 30, 2011 | Grundfos Plumbing

1 Answer

Timer gets off by hours


I have circulation system on my water heater.
First system gave out.
When taken apart, it was clogged with sediment and couldn't be cleaned.
Put sediment filter on line, and second circulation system works fine, and timer works fine too.
I haven't had timer problem, but have investigated timer motors running fast and slow.
My friend who re-winds big pump motors says homeowner timer motors are engineered for 60Hz.
As long as electric power is 60Hz (60 cycle AC), then motor will keep exact time.
Since your household current is 60Hz and other electro-mechanical timers run correctly, then it's likely timer motor has a flaw or has gone bad.
Grundfos water heater re-circulation pump and timer are sealed unit.
Grundfos manuals do not show parts list or repair steps:
http://waterheatertimer.org/Water-heater-recirculation-system.html#Grundfos
It's aggravating when expensive household timers like Malibu power packs and Grundfos pumps are not made to be repaired.

Nov 24, 2010 | Grundfos The UP1510B5ATLC 125th HP 1...

1 Answer

My Grundfos MQ pump won't start after it has been idle for 4 to 5 weeks. It is installed at my weekend place in the country. This has happened several times. Pump was replaced once but problem...


There should be a small cap on the motor end of the pump, take that off and you will see the stainless steel shaft with a **** in it for a flat bladed screw driver. You should not need to turn the water off. A few drops might come out, but it's safe to do it that way. Turn the shaft with the screw driver and that should loosen up the pump.

Hope this helps.

Nov 04, 2010 | Grundfos Plumbing

2 Answers

Grundfos UPS 25-50 180 - start up


Are you able to check for power to the pump with a mult-meter. If you have power you the know the pump has siezed (flat spot on the motor) if there is no power then you know there are issues with the controls.
I hope this may have helped,
Tom

Oct 14, 2009 | Grundfos Plumbing

Not finding what you are looking for?
Plumbing Logo

Related Topics:

590 people viewed this question

Ask a Question

Usually answered in minutes!

Top Grundfos Plumbing Experts

john h

Level 3 Expert

12650 Answers

yadayada
yadayada

Level 3 Expert

76682 Answers

Andrew Bugbee

Level 2 Expert

227 Answers

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

Answer questions

Manuals & User Guides

Loading...