While you wait for answers, we may have found some information which could help you.
Click here for Boiler Cutting OutWhat is wrong with my ravenheat white star combination boiler,?
minimal hot water ?
csi 85t ravenheat no power at fan?
Faulty Ravenheat condensing boiler?
Ravenheat CSI 85 Red Light?
ravenheat csi 85(t) 780 series red light flashing?