While you wait for answers, we may have found some information which could help you.
Click here for Pressure Ravenheat Condensingravenheat csi 120 no hot water?
Central heating but no hot water?
csi 85t ravenheat no power at fan?
What is wrong with my ravenheat white star combination boiler,?
ravenheat csi 85(t) 780 series red light flashing?
how can i ignite the pilot light on a ravenheat boiler?