Why would a heating boiler make frequent kettling noises lasting a week
or two and then they stop completely? Perhaps returning after a couple
of months.

Is scale and gunk accumulating in the heat exchanger and then getting
blown away by the kettling bubbles?

On 12/04/2021 10:51, Pamela wrote:
Why would a heating boiler make frequent kettling noises lasting a week
or two and then they stop completely? Perhaps returning after a couple
of months.

Is scale and gunk accumulating in the heat exchanger and then getting
blown away by the kettling bubbles?


Mine did this. Eventually I found the automatic bleed valve atop the
boiler was sticking, and I suppose entrapped 'air' was sometimes cleared
by the pump, or maybe the valve worked sometimes. Anyway, it's been
fine now for a couple of years.

--
Cheers
Clive

In article ,
Pamela wrote:
Why would a heating boiler make frequent kettling noises lasting a week
or two and then they stop completely? Perhaps returning after a couple
of months.

Is scale and gunk accumulating in the heat exchanger and then getting
blown away by the kettling bubbles?

that would bhe my assumption.

Screwfix sell a "noise reducer" potion which works well on my system

--
from KT24 in Surrey, England
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle

I have noticed that in my immersion heater if I give the tank a sharp rap
when its doing it, the gunk falls off the element and all is well again for
ages. I think, though the water in London is very hard and full of
limescale, probably from that huge great concrete ring main we have!

Brian

--

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"Pamela" wrote in message
...
Why would a heating boiler make frequent kettling noises lasting a week
or two and then they stop completely? Perhaps returning after a couple
of months.

Is scale and gunk accumulating in the heat exchanger and then getting
blown away by the kettling bubbles?