While you wait for answers, we may have found some information which could help you.
Click here for Riello Burner Heatinghow can i bleed my riello 40 oil burner?
Riello Burner Motor Sound?
Riello 40 GXB boiler wont fire up?
Air lock in Riello burner?
Biasi sg3 Riello 40 burner constantly firing?
My riello boiler won't start after replacing the water pump?