On 11 Jan 2006 02:04:09 -0800, "Bal" wrote:

I have checked the flue, all is clean, clear and the fumes are coming
out as normal.


OK.

If you are still getting the main burner and pilot cutting out after
having replaced the thermocouple (but it has improved), then the only
things left are the overheat thermostat (I think you had a suggestion
on how to test that) or the gas valve.

The thermostat would be pretty cheap I would have thought. By the
time you get to a new gas valve I'd start to wonder if it's worth it
in a boiler of this age and whether replacement would make more
economic sense.

I'm still concerned by the flame colour though. It would be a very
good idea to get the flue gas composition checked for carbon monoxide.
Realistically, that is a professional job since flue gas analysers
cost around £200+


--

..andy