While you wait for answers, we may have found some information which could help you.
Click here for Work Gas Light
pressure dropping on openning the hot water in my ravenheat csi 85 aboiler?
Central heating but no hot water?
ravenheat csi 85 b (t) hot water no central heating?
ravenheat csi 85(t) 780 series red light flashing?
Ravenheat CSI 85 Red Light?
What is wrong with my ravenheat white star combination boiler,?
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix home heating systems.