While you wait for answers, we may have found some information which could help you.
Click here for Radiators Hot After Hot WaterWhat is wrong with my ravenheat white star combination boiler,?
Faulty Worscester 35 CDi loosing pressure?
how can i ignite the pilot light on a ravenheat boiler?
pressure dropping on openning the hot water in my ravenheat csi 85 aboiler?
minimal hot water ?
Ravenheat CSI 85 Red Light?