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