Check to see if you have sufficient oil in the burner. If you have enough oil, then the tank gauge may be corroded or worn and will need to be replaced by a service technician.
The Oil Burner Continues to Turn Off and On
Take a look at your tank gauge to make sure you have sufficient fuel. If you have plenty of oil, your burner nozzle or oil burner filter may be clogged. The oil burner nozzle should only be handled by someone experienced with oil-fired boilers.
The Boiler's Flame Has Changed from Blue to Orange
When the flame changes from its proper blue colour, it is because too much oxygen has entered the burner and requires readjustment. This could be because the electrodes have gone bad, or because the air mixture needs adjusting. It bears repeating that a boiler technician should handle any adjustments involving any of these solutions.
The Oil Burner Keeps Tripping After the Reset Button Is Pressed
Make sure you have allowed the burner to rest for at least 30 minutes before hitting the reset button. If you have allowed the appropriate amount of time to go by and the boiler trips again and won't restart, it could be because the safety controls have locked you out. This is a safety feature that many newer modelled burners have and requires a special code in order to unlock. A boiler technician will need to be contacted in order to restart the boiler.