Ecoflam minor 1 black smoke

[lame plumber]

it means you can get a 0 or 1 and wont kill your analyser as you will do with your method

 

[kimbo]

I have been to a few like this including my own. The common thing with them all was flue gas leakage either from the flue which on the early ones were cut to length and taped which was a recipe for disaster. Did you run them up with the door off and the snorkel off. The burner gasket goes hard on those and splits. If everything else appears ok I would be looking at the fan or motor. The fan could be slipping and not delvering enough air or possibly the motor running a bit slow.
I take it is burning clean oil and not contaminated stuff

 

[WHPES]

I would have said flue seals, even with the snorkel off it can draw air down there. Stuff up the outlet, put some smoke pellets in the combustion chamber and put the burner back with the solenoid coil unplugged and run and see if you get smoke leakage around the flue joints.

 

[Gam plumb]

Thanks for all your advice guys, i have with the exception of the fan slipping tried all of the above, new burner gasket, countless nozzles, snorkel off, tea towel in the balanced flue, back door open, new motor, pump, fresh temp oil supply from a 25L drum, checked the air damper for operation opening/closing on the slider, bit the bullet today & put a new max 1 on it, fired up good as gold after a dam good clean up, i will get to the bottom of the problem with this burner even if it means sending it to Ecoflam

 

[Bunker]

You checked your analyser filter?

 

[WHPES]

Had a Firebird condensing combi this week. Could not get the CO below 75ppm whatever I tried, with the snorkel off, flame spreader position altered or anything. Very puzzling.