riello burner problem.. help

[Downtown]

Today i was fixing a riello burner. The fault at hand was the capacitor do i changed it and it went but the flame kept cutting out once it ignited, so i took the photo cell out to clean it but after
i done that the fan just got stuck in a loop. So i would turn the burner on and the fan just started but nothing else happened and it didn't cut out. No power to soleniod and no spark.
I changed the control box and it was just doing the same thing. anybody else had this happen?

 

[Dotty]

Faulty photocell. RDB or R40?

 

[SimonG]

Aye is it rdb or g5 ish? What was the oil pressure?

 

[Downtown]

RDB.. but would the photo cell stop the burner from locking out if it were faulty? i suspected a faulty photocell in the first place.

 

[Best]

Yes, faulty photocell can do that or cause intermittent start/stopping.

 

[WHPES]

I would suggest photocell or stray light getting onto it making it think that it sees a flame.