While you wait for answers, we may have found some information which could help you.
Click here for Ravenheat Fault GasRavenheat CSI 85 Red Light?
Faulty Ravenheat condensing boiler?
pressure dropping on openning the hot water in my ravenheat csi 85 aboiler?
how can i ignite the pilot light on a ravenheat boiler?
csi 85t ravenheat no power at fan?
Faulty Worscester 35 CDi loosing pressure?