Any one any idea what could be wrong with my Greenstar Boiler?

The Blue light and the reset light are both flashing. I have held the reset button down for two seconds and the boiler attempts to restart, the Burner indicator is green and water is going into it. However once it completes the restart, it stays on for about 2 secs and then tries to restart itself again. It will go through this 3-4 times and then the blue light and reset button start to flash again.
It would seem as if this problem started in the last couple of hours when I walked into the house it was colder than expected so I felt the heaters and they were still warm.
The pressure is between 1 and 1.5 so not sure if that has anything to do with it.
Any help would be appreciated.