Heating pump noise (bubbles?)

Joined
27 Sep 2010
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Location
Cambridgeshire
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United Kingdom
Hi all,

I've noticed that our heating pump is making a noise which sounds like grit in the water flowing through it, or air bubbles.

It's hard to explain, it sounds like how I would imagine gritty water to sound flowing through a pipe.

The boiler is also kettling a moderate amount (Ideal Mexico 2 , semi pumped system I think), so I have drained the system and added some X200 (and X100) straight to a towel rail to make sure it gets in to the system directly. So maybe it's air bubbles from the kettling?


The heating works fine, just wondered if this is a sign of something that needs attention?

Thanks!
 
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Sounds like it might be cavitation (caused by air in the pump) it is a symptom rather than a cause.
Could be the system is drawing in air or leaking and constantly changing the water, which will cause scale too.
 

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