noisy rads/pipes when system off

buckabroad · 6 Dec 2005

We have a pressurised heating system that is about 5 years old. The boiler is a Vokera. In the last two months an intermittent problem has started occurring. After the system is switched off (about half an hour) there is a loud noise (lasting about 5 seconds) emanating from the radiators/pipes, sounding like a ship scraping along an iceberg, not a water hammer noise. This noise can reoccur up to every half an hour all night until the boiler comes back on in the morning. Sometimes it will not happen for a week.

Any advise would be welcomed.

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noisy rads/pipes when system off

buckabroad

DIYnot Local

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