Noisy baxi solo

[abelag]

Hi guys
Need some help with a baxi solo 24 he. It's making a loud buzzing noise once it's been on for about 20 minutes, it sounds like a fighter plane. It only does it when the heating is on and it's fine when only the hot water is on, any ideas? thanks.

 

[hammers4spanner]

possible kettling

 

[mountainman]

Are you sure that it is the boiler making the buzzing noise?
If your answer is yes, then I suggest you consult a Gas Safe registered engineer.

 

[dancinplumba]

Bet he often consults himself, I know I do

 

[hammers4spanner]

Are you sure that it is the boiler making the buzzing noise?
If your answer is yes, then I suggest you consult a Gas Safe registered engineer.

he is gas safe by his yellow tag

 

[Ermintrude]

Fan bearing once its warmed up, or running at low speed? Ketteling would occur on DHW and heating unless heating return was restricted or rads had lots of air in them? Have u checked too of hex and flue, seen some half full of aluminium flakes. Turn it right down and run do u get same noise?

 

[mountainman]

he is gas safe by his yellow tag

Tag doesn't show on my 'phone and the post showed up in the gsr open forum.

 

[tom609]

Could be heat ex i had one where it was making a noise on heating side tried a fan wasnt that spoke to baxi they said gas valve or fan didnt change gas valve as wasnt convinced customer went o a contract turned out to be heat ex

 

[abelag]

did they change the hx or just clean it tom?

 

[tom609]

Replaced it the noise only appeared after htg had been on for a whilei think it was originaly faulty and the instalelrs turnd down the boiler stat and when i serviced it it then appeared cos i put the boiler on high, turned it down and it dissapeared

 

[abelag]

That makes sense , cause one of the rads was stone cold the trv was stuck shut as soon as I loosened it up the noise stopped for about 5-10 mins (it obviously cooled the water down) then it come back on when it got hotter.

 

[hammers4spanner]

How old is the boiler??

 

[abelag]

its only 2 year old

 

[tom609]

Warranty call

 

[abelag]

Just out of warranty

 

[tom609]

By how much

 

[hammers4spanner]

I had a chaffy last year that sounded like a lancaster bomber was in the house , as the heating got hotter the noise got louder that was the hex

 

[abelag]

couple of months ,customer spoke to baxi they're not interested

 

[tom609]

Speak to the rep they are usually helpful

 

[abelag]

never thought of that I'll give it a try you never know

 

[tom609]

Good luck

 

[Ermintrude]

Put in some hcl cleaner .

 

[abelag]

That's exactly how it sounds hammers you can even hear it from outside!!

 

[abelag]

thanks tom

 

[abelag]

thanks everyone