On 04/11/2020 22:34, Clive Page wrote:
When the weather turned colder I turned up the heating but the boiler
started making kettling noises and then banging - it turns itself off
and restarts later, with the same noises.

snip

Is there an automatic air vent on top of the boiler which is not
working? If so, you can borrow my T-shirt.

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Cheers
Clive