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why does black carbon build up on my gas fire pots?

Why does black carbon build up on the gas fire pots and why does it keep cutting out?
julie, February 2009
The gas to air ratio is incorrect to your fire burner.Probably a chunk of dust in the injector port.As Peccavi says,best to get it serviced.

Tony S, February 2009
Soot could be (probably is) caused by incomplete combustion causing Carbon Monoxide which is Dangerous.

Best to get fire serviced.

This link is to a UK gas safety Carbon Monoxide Awareness page...

http://www.hse.gov.uk/gas/domestic/co.htm

Peccavi, February 2009