Hi guys,
Last week i switched on my central heating timer now the weather is getting colder and i have got a problem.Boiler works ok but after about 45mins - 60 mins i get a loud buzzing noise for about 2 mins.When the boiler fires up again it seems to stop,again after about another hour i get it again,really loud constant buzz.Only get this on heating not on hot water.Boiler is a glowworm 30 hxi about 6 years old and seems to be working ok apart from this.
Thanks for your help.
Last week i switched on my central heating timer now the weather is getting colder and i have got a problem.Boiler works ok but after about 45mins - 60 mins i get a loud buzzing noise for about 2 mins.When the boiler fires up again it seems to stop,again after about another hour i get it again,really loud constant buzz.Only get this on heating not on hot water.Boiler is a glowworm 30 hxi about 6 years old and seems to be working ok apart from this.
Thanks for your help.
