I was wondering if anybody could help me out. I have a raypak rp2100 that won't stay lit. It worked fine last year and this year it started with a rol code so I replaced the roll out fuse and now it starts up. The pilot is blue and it will call for heat and the spark and the burner will ignite. It stays on for a little bit then randomly will burn out and then it will spark again come on again and be on for a min or 2 and then go out. Over and over. I've tried jumping the pressure sensor didn't affect anything. Not sure what it could be. If anybody has any clues or ideas please let me know.