thanks to everyone for your help. sorted it now, it was a faulty fire valve that was closing and opening randomly so it seems. we replaced it and everything is now ok. again thanks.
yes burner has been removed and stripped cleaned oil flow is as it should be but for some reason it shuts down after a period. the burner itself seems fine clean.
hi, my mothers got a rayburn supreme with an oil conversion by don engineering. been working faultlessly for years. it has suddenly developed a fault whereby it keeps going out due to oil being cut off. engineer is stumped. cleaned and checked all the pipe from the tank to oil control unit. then...