LED getting covered in black dust on FireBird Enviromax Oil Boiler

Passport1

]Hi
I have a FireBird Enviromax Oil Boiler
Every week or two the boiler starts at appointed times but the boiler coughs and splutters and doesnt start up - its like if it trying to power up but it cant and is coughing to clear something.

The problem appears to be that an LED sensor in the boiler is getting covered in black dust -
If i clean the led sensor with a piece of tissue and put in back in the system starts up and works. One of the attached pics shows the led circled in red when it has been cleaned of the filament of black dust and how it looks when system working correctly
This seems to happen every couple of weeks
Anyone know why this would be happening and what needs to be done, if anything to stop this from happening. Im assuming ti something to do with the oil - its kerosene
The workaroound works in terms of fixing the problem but would like to figure out why this happens and if anything can be done to fix it so to stop it
Thanks

irelandhouse

hi there,

this is down to usually the pressure in the oil.

a plumber would be able to adjust this so that it flows correctly.

the part that is blocking up is the photocell.

cleaning it will resolve it for a few days, but fixing the pressure will fix it for you.

kscobie

Common problem, needs to be set up properly, oil pressure, air setting, generally the nozzle is changed, use a properly trained guy with a flue gas analyser