On Sat, 18 Feb 2006 20:32:44 -0000
"Autolycus" wrote:
snip
There is something horribly, dangerously wrong with your boiler: as
others have said, it simply isn't getting enough air for the gas to
burn fully, and this could be for three reasons: too much gas flowing
(seriously faulty gas valve); a restriction of the inlet air; or a
blockage of the flue preventing combustion products escaping, so the
gas is trying to burn in an atmosphere with far too much CO2 and CO.

You really _must_ turn it off immediately, and I would also turn off
the gas completely so that even the pilot light goes out.

Post again in the morning to reassure us all that you have, and that
you've survived.


Kevin,

I'm posting now as I've already turned the boiler off!

Your post made me realise something, I covered up a vent in the kitchen
during a particularly cold spell a few weeks ago. I bet that's what's
caused this! Do you think I'm right?

I feel like an idiot! Maybe that's the brain damage I've already
sustained.

Cheers
--
Michael