Glow-worm Spacesaver 40B Mk11

The burner ignites with a strong blue flame, but after a few minutes, the flames blow around all over the place (as if the pressure has dropped/air in system)...even around the sides of the boiler. The flames then go out, with a few seconds of gas only, and then the boiler (including the pilot) shut down. It will, however, run a little longer when the Combustion Chamber Shield is removed.

Burner pressure setting OK at between 10 bar and 16.3 bar.

The flue is clear...both outlet and intake. Apparently it is 'vitiating'.

Tez, November 2006

had this problem my self make sure top cover is in at the back theirs a square section about 10mm that as to slot in behind the h/exchanger if its not in place it causes the fumes to mix

paul, December 2006

it will only vitiate if there is a blockage in the flue - check it again

craig, plymouth, November 2006