DIY Doctor UK DIY Forums

Hi, i have the above named boiler and its starting to give me some grief,well noise actually.
The boiler works i get hot water and the radiators are fine.
But when it cuts in and out it makes a terrible noise,like a screeching noise.
Its only recently started happening,it is not the fan because i know what that sounds like because its gone wrong before on me.
I live in a block of four flats we all have our own tank in the loft fed by a main one.
Can anyone help or suggest anything? ty

Hi,

Could be the pump - bleed it = large screw in middle.
Watch it as it comes on to localise the noise- could be sticking/air/about to sieze up.

Hth

Hi there steve, ive bled the pump it hasnt helped,but..its seems the noise is coming from the little tank in the loft,ive been told it coul dbe scale..but as i have a cast iron boiler or something they dont reccomend a cleaner

Could be the ball valve on the F&E tank - poss, change it ...... about £5