While you wait for answers, we may have found some information which could help you.
Click here for Ravenheat Csi Heating Valvecsi 85t ravenheat no power at fan?
Faulty Worscester 35 CDi loosing pressure?
Central heating but no hot water?
Faulty Ravenheat condensing boiler?
Ravenheat CSI 85 Red Light?
pressure dropping on openning the hot water in my ravenheat csi 85 aboiler?