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DIYLover38
Thanks, but this is currently on my hot water side?
what system do you have Y plan or S plan ?
Either circuit .
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DIYLover38
S plan
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DIYLover38
Sorry, I’m not following. If I bleed my radiators, for hot water, this may cure the boiler clunk noise?
No bleed at boiler .
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DIYLover38
I don’t think I have this option? It’s a tank fed one? There’s two 22mm pipes and a 15mm pipe, can’t see a bleed valve.
Feel the HW zone valve when it is making the noise, I have seen them with a tooth sheared on the gear mechanism, and it makes a clunking noise
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DIYLover38
Thank you, I will try this, however it does sound more at the garage than in the airing cupboard. Also the noise seems to be made upon firing of the boiler, and when the boiler goes out.
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DIYLover38
Ok have tried this, and no clunk from valve, I went into the garage and it’s definitely the boiler upon igniting and going out. Thank you.
sounds like the gas valve settings have drifted then, you cant sort this yourself , you will have to get someone in
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DIYLover38
Thank you very much, at least I know what it is. Is it dangerous, or can it be left until I can get someone in?
Not really dangerous, actually sounds a lot worse than it really is, not something I would leave long term though as if too low it can cause cracks in the burner
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