My Vaillant Boiler is sounding a quiet singing note every 15 mins or so! We have just moved in with little money for exploritary tests. This thermocompact gas boiler is the wall hung, room sealed, fan assisted type. The model no. is VC GB 142 EH (GC No. 4104409). Is this normal or could there be a problem? Is it likely to be dangerous?

Alison, January 2007

wouldn't say its dangerous

hi-spec plumbing, January 2007

would say it dangerous. is it working right? what sort of singing note

hi-spec plumbing, January 2007