BoilerFaultCodesFerroli F40 Fault Code
The Ferroli F40 fault code means: your boiler's computer has lost its internal settings, meaning it no longer knows how to operate correctly and has shut itself down as a precaution.. It appears on 10 Ferroli models in our database.
Technical description: PCB parameter fault
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Ferroli models that show the F40 fault code
Click a model for the full fault code list and model-specific repair notes.
- Arena 30 C Repair: £90-180
- Arena 30A Repair: £80-150
- Atlas D Repair: £80-150
- Bluehelix HiTech RRT Repair: £120-280
- Bluehelix Pro RRT Repair: £150-300
- Bluehelix Tech Repair: £150-300
- Bluehelix Tech RRT Repair: £180-450
- Bluehelix Tech RRT 24C Repair: £150-300
- Extrema C Repair: £80-150
- Maxima 35 S Repair: £80-150
Source
Ferroli F40 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