While you wait for answers, we may have found some information which could help you.
Click here for Hot Water Helloravenheat csi 120 no hot water?
ravenheat csi 85 b (t) hot water no central heating?
how can i ignite the pilot light on a ravenheat boiler?
What is wrong with my ravenheat white star combination boiler,?
csi 85t ravenheat no power at fan?
Faulty Ravenheat condensing boiler?