Nosiy boiler problem - intermittent moaning

[o0ps]

Another noisy boiler problem I'm afraid.
About every 20-30 mins it emits a long moan (~15 secs)
Seems to happen when bolier flame shuts down and then starts up again.
Have read a lot of posts here about noisy boilers , but my problem is trying to work out whether this is kettling.
Not being a coffee/tea drinker I am not too familar with kettles! Im pretty sure it isnt kettling though.
Anyway I have a 3year old Biasi 24s combi wall mounted bolier.
Any help would be greatly appreciated.

 

[trickytel]

Another noisy boiler problem I'm afraid.
About every 20-30 mins it emits a long moan (~15 secs)
Seems to happen when bolier flame shuts down and then starts up again.
Have read a lot of posts here about noisy boilers , but my problem is trying to work out whether this is kettling.
Not being a coffee/tea drinker I am not too familar with kettles! Im pretty sure it isnt kettling though.
Anyway I have a 3year old Biasi 24s combi wall mounted bolier.
Any help would be greatly appreciated.[/quote=hi i have exactly the same problem,the boiler is struggling to ignite thus sounding like it,s sighing.mine started with about 10 sighs before it would eventually fire up,now it goes on for an hour i would love to know what is causing this,i have a wall mounted potterton

 

[ChrisR]

oops - precisely at what point is the noise?

tricky- strart another thread giving details of your boiler and its problem.

 

[kevplumb]

had this prob with my boiler so i gave her a bedroom

 

[trickytel]

boiler sighs for over an hour before it will ignite,every 10 seconds,everytime it comes on automatically in the morning. why?

 

[o0ps]

oops - precisely at what point is the noise?

tricky- strart another thread giving details of your boiler and its problem.

ChrisR
Its when the boilier lights up for the CH. Every 30 mins or so the gas flames stop and then after a minute or so , it lights up again with this moaning noise for 20-30 secs.
CH is working fine but obviously something is wrong which I would like to get fixed.