After heatings been on for around 10 mins starts to make noise like air in the boiler ,Changed the pressure valve,Repressured the tank via schraider valve,still the same, as noise starts if you turn on hot water domestic side the noise stops then starts again as pressure builds up. Raidators are hot and no air in them .ANY IDEAS AS TO THE PROBLEM WOULD BE GRATFULLY RECIEVED

Paul lewis, March 2008

worcster boiler 24i when running a bath goes cold half way and heating gose off

ernie, April 2008

worcester 24i rsf when running a bath half way water goes cold and some times heating goes off

ernie, April 2008

sludge,scale in heat exchanger. possible candidate for a powerflush ?

combiking, March 2008