While you wait for answers, we may have found some information which could help you.
Click here for Combi Ravenheat HeatingWhat is wrong with my ravenheat white star combination boiler,?
csi 85t ravenheat no power at fan?
minimal hot water ?
Faulty Worscester 35 CDi loosing pressure?
ravenheat csi 85 b (t) hot water no central heating?
ravenheat csi 85(t) 780 series red light flashing?