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Ferroli boiler making a loud noise?

My Ferroli combi boiler is making a loud vibrating noise, like the fan going round and vibrating on the sides of the metal around it.Wether the heating is on or off. Plèase help.
Michelle Brown, May 2008
Don't know if it helps but we have some Ferroli boilers about 1992 vintage. One fan was vibrating, which then set up very loud vibrations in the cabinet. Those fans are centrifugal fans, which have an impeller which ideally is very light, especially at the circumference. So check that the fan spins smoothly (disconnect all power first of course). If so then check that the blade does not spin eccentrically, and maybe bend it a little if it does. And of couse there should be no obvious damage. But the secret, which I found with mine is that after some years there will be a build up of dirt on the blades, just where you don't want a buildup. So give the blades a good, gentle cleaning. Hope that helps.

Brendan, May 2009
sounds like the bearings in the fan may be gone, fan could be rotating with air flow down the flue when off.....

T, May 2008
link Click here to see other fixes for Ferroli.