Oil burner problems are serious and need to be addressed immediately. The first thing that you should do is to troubleshoot the problem thoroughly. Should you need to call a professional to fix the problem, the more information you can supply, the more likely they will be able to fix the problem immediately.
One of the first things that you can try is to hit the oil burner reset button. This may fix the problem, however, it is likely that the oil burner is not working because of a mechanical issue and the unit may shut off again shortly after using the reset button.
Check your oil burner filter regularly and replace as necessary. This is especially important if you have run out of oil as the system will suck up all the dirt and sludge from the bottom of your tank. This dirt and sludge can quickly clog your filter and prevent proper performance from your oil burner. Oil burner filters should be replaced whenever necessary as it is far less expensive to replace filters than it is to repair your system.
Another common problem comes from the oil burner lockout light turning on. This can happen for a variety of reasons. Some of the more common reasons include: blocked nozzles, blocked fuel lines, a stuck fuel solenoid or a faulty control box. Contact a qualified heating engineer to properly diagnose and repair the problem.
The cadmium sulfide cell (more commonly referred to as a “cad cell”) is the part of the primary control system used to sense the presence of the oil burner flame. Your oil burner cad cell is a critical part of your system. Basically, if your cad cell is not functioning properly, you will not be able to light your burner.