We may have found other answers which could help you.
Click here for Fault Pressure FineParts for ferroli optimax he 31c ?
Ferroli DOMIcompact F 30 D?
ferroli plus 31c has a code b2 any ideas?
Connections on Ferroli F24 Gas Valve?
Ferroli domicondens he26 C fires up but doesn't appear to rectify ?
Hi how to increase the water pressure on ferroli optimax 25C?