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Hi Paul, yea i bled it, i ran the burner for apporx 5 mins, it done this once every 45 seconds, boilers runs as it should, then sounds like the flame has stopped but still in purge mode, then ignites again and repeats, the pump, coil and photosensor were all replaced due to being faulty/broken.

Hi everyone, had to change the oil pump and photosensor on a sterling burner earlier, everything seemed to be ok on fire up, until after 45 (approx) seconds, the burner "missed". It didnt lock out, pump pressure remained the same and the burner fired again after 5 seconds. It continues to do...