Baxi 105e making hell of a racket...INFO PLEASE / HELP!!!

[Needy]

Hi All

Got as Baxi 105e that makes hell of a racket but only when its being asked for hot water when the heating is on its fine runs as sweet as ever.
Also another problem I have seen with it whenever is on being heating or hot water it leaks from the over flow

Any ideas what the problem is ??

Thanks

 

[MeldrewsMate]

Water leaking from the 'overflow' is probably coming from the safety relief valve due to system pressure being too high - have someone check the expansion vessel.

Noise? you don't describe the noise in any detail. Is it a squeal? A bang? A series of bangs? Something else?
Highest probability with present evidence is a blocked secondary HE on the primary side. Is the hot water coming out plentiful and hot?

 

[Needy]

Thanks for the reply meldrewsmate

Yes its a squeal rather than a bang also the water is still hot and plentiful

thanks