helllo people ,resently moved house turned on oil burner it tried to start then stopped wouldnt start again .i then removed the burner to find the boiler was full of water [no cap on flue noooo!] so i drianed all the water out cleaned the boiler and burner replacing the nozzle and bleeding the oil .still woulded fire but could hear electrode sparking ,i opened the fan or blower and gave it a spin the thing fired and kept going until themastat temp then stopped and wouldnt fire when the temp dropped below setting.could anyone tell me what the hell is going with the mad thing? ps its riello 40 burner