While you wait for answers, we may have found some information which could help you.
Click here for Ravenheat Boiler Years Lightravenheat csi 120 no hot water?
Faulty Worscester 35 CDi loosing pressure?
Ravenheat CSI 85 Red Light?
Faulty Ravenheat condensing boiler?
ravenheat csi 85(t) 780 series red light flashing?
how can i ignite the pilot light on a ravenheat boiler?