What is wrong next to my grease furnace? My oil furnace be shut off for the summer,,,I cleaned and serviced...

My oil furnace be shut off for the summer,,,I cleaned and serviced it and bled the fuel stripe. I turned it on ,,it will run for approx. 30 seconds and shuts past its sell-by date ,,everytime I hit the reset button it will run for 30 seconds and shut stale again. How do I fix it.
Air condition is not colling?
Answers:    No flame ignition,oil sanctuary is shutting down.depending on what maintenance be done,you may have lost your grease prime.Open the bleeder on the pump ,bleed into a 20 ounce bottle ,if there's water surrounded by the oil you'll see the separation.
also the electrode settings &aperture may have moved and call for to be adjusted .finally you have need of spark from the transformer,but transformers are usually not the problem.
If I install a Solar hot sea system...
Do you have an underground cistern? You may have hose in the reservoir which is interfering with the furnace firing up.