While you wait for answers, we may have found some information which could help you.
Click here for Ignite Clicking Ideascsi 85t ravenheat no power at fan?
Central heating but no hot water?
Faulty Ravenheat condensing boiler?
ravenheat csi 85(t) 780 series red light flashing?
pressure dropping on openning the hot water in my ravenheat csi 85 aboiler?
how can i ignite the pilot light on a ravenheat boiler?