BoilerFaultCodesFerroli 00 Fault Code
The Ferroli 00 fault code means: your boiler is currently in summer mode, which means it is only set up to provide hot water and will not heat your radiators.. It appears on 2 Ferroli models in our database.
Technical description: Summer functioning
DIY fix possible
Locate the mode selection button on the control panelPress the button to cycle through the settings until the winter (radiator and tap) symbol appearsConfirm the setting is saved and wait for the boiler to initiate the central heating cycle
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Ferroli models that show the 00 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ferroli 00 fault code information on this page is sourced and cross-checked against the official Ferroli service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026