I've just replaced the thermocouple and cleaned out my Main Medway Multipoint. The pilot lights beautifully now but burns tall and yellow ish. I've checked the cabinet seal, although it may need replacing. It seems to fit all the way round. Any other ideas?
Thanks

John H, August 2009

Blocked prearation port.

M, August 2009

A yellow flame is a sign of incomplete combustion with too much carbon monoxide present. You may do best to call a qualified person to service it safely. In the UK they call them Gas Safe registered I believe - Yellow Pages will help with your Yellow Flame.

Peccavi, August 2009