need help please.
have a potterton netaheat boiler. boiler fires up but cuts out after a few mins. no hot water or heating. told it was the motorised valve. changed it with no change. told it was a faulty pump. changed it. no change. told it was tank pipe stat. changed it. no changed. linked out boiler stat to check that.boiler stays on but after 5 mins steem blows out of the pipe above the header tank but still no heat. header tank and feeder tank fine. think of changing the pcb next. what do you think boys and girls.
have a potterton netaheat boiler. boiler fires up but cuts out after a few mins. no hot water or heating. told it was the motorised valve. changed it with no change. told it was a faulty pump. changed it. no change. told it was tank pipe stat. changed it. no changed. linked out boiler stat to check that.boiler stays on but after 5 mins steem blows out of the pipe above the header tank but still no heat. header tank and feeder tank fine. think of changing the pcb next. what do you think boys and girls.