Worcester boiler buzz fading 37cdi

Blaine1944 · 5 Nov 2019

Hi, got a 10yrs old WB greenstar 37cdi. Runs nicely but every few minutes has a loud buzz that fades in then back out, lasts for a few seconds and then fades out. Definitely not the pipe work or snagging. Can happen any time, not just upon fire up or shutting down. Any ideas? Thanks

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Worcester boiler buzz fading 37cdi

Blaine1944

DIYnot Local

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