We may have found other answers which could help you.
Click here for Pilot Light Turnravenheat csi 85(t) 780 series red light flashing?
ravenheat csi 120 no hot water?
Central heating but no hot water?
pressure dropping on openning the hot water in my ravenheat csi 85 aboiler?
Ravenheat CSI 85 Red Light?
What is wrong with my ravenheat white star combination boiler,?