While you wait for answers, we may have found some information which could help you.
Click here for Ravenheat Water Combi Boiler Heatingcsi 85t ravenheat no power at fan?
pressure dropping on openning the hot water in my ravenheat csi 85 aboiler?
Ravenheat CSI 85 Red Light?
ravenheat csi 120 no hot water?
minimal hot water ?
What is wrong with my ravenheat white star combination boiler,?