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Fray Bentos
 
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Default yellow flame in gas fire

Hello all. I have a gas fire.

http://www.gasapplianceguide.co.uk/R...Black_03_1.jpg

anyway the middle 2 bars burn blue with the top quarter yellowish. The outer
two bars are blue / orange normal

I have cleaned the jets that feed the venturi (?) and the venturi (?) itself

the venturi is the block with the holes in that the gas burns from. (i
think)

Why is this ? the flue/chimney is good with air being drawn through and
besides, the outer two bars are ok.

tia