Grundfos pump is whistling

[rockyrockstar]

help please i have a combination boiler with a grundfoss pump,
the pump sits on the floor below the boiler and has a grey cover on it, the problem is that it is making a very loud constant whistling noise, i have read that you can bleed the pump but mine has a cover on and I cant seem to see hoe to remove it

 

[plummerman]

You have a combination boiler with a pump external from the boiler

Does this grey pump hava a 22mm white pipe going into it, an a inweenie little clear pipe coming out of it by any chance???

 

[powell30]

What tune is it whistling??

 

[plummerman]

DIXXIE i'd say

 

[anotherbgeng]

your grundfos pump is the condense discharge pump,
probably the float is stuck down, or broken causing the pump to run continously . they can be taken apart but we just normally replace them as if its happened once it will go again...

 

[rockyrockstar]

You have a combination boiler with a pump external from the boiler

Does this grey pump hava a 22mm white pipe going into it, an a inweenie little clear pipe coming out of it by any chance???

Yes it does

 

[rockyrockstar]

Fixed it!!! the little tank was full , took pump apart and emptied it and the noise stopped!! Yea at last