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Noisy worcester 240 Combi Boiler high pitched whine?

The boiler emits a very loud constant high pitched whine which sometimes reduces after an hour or so. The boiler is fixed to the wall in a very small kitchen & the baby's room directly above. Can anything be done?
Garry Bates, March 2006
Not sure, but mine whines too, I think it is the Flue fan and they can be replaced.

RayJamm, October 2008
poss circulation problem try opening all rad vavles .or take heads of trvs .also may be over gassed call an engineer in to check.

paul, March 2006
link Click here to see other fixes for Worcester 240.