BoilerFaultCodesFerroli F15 Fault Code
The Ferroli F15 fault code means: your boiler has stopped working because it cannot properly control the fan that removes waste gases from the system.. It appears on 12 Ferroli models in our database.
Technical description: Fan problem – tachometer signal interrupted fan connection or damaged debris in fan. You need to check and clean fan debris
What causes the Ferroli F15 fault?
This fault occurs when the boiler's computer cannot detect the speed of the fan, often due to a build-up of dirt or debris inside the fan's blades. If the fan cannot spin effectively or communicate its speed back to the system, the boiler will shut down as a safety precaution to prevent dangerous fumes from staying inside the unit.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Avoid the next call-out bill
A cover plan would handle faults like F15: no call-out fees, no surprise bills.
Affiliate links. We may earn a commission at no extra cost to you.
Ferroli models that show the F15 fault code
Click a model for the full fault code list and model-specific repair notes.
- Arena 30 C Repair: £150-300
- Arena 30A Repair: £180-350
- Bluehelix HiTech RRT Repair: £150-£450
- Bluehelix Pro RRT Repair: £150-300
- Bluehelix Tech Repair: £150-350
- Bluehelix Tech RRT Repair: £180-450
- Bluehelix Tech RRT 24C Repair: £150-300
- Domiproject Repair: £150-£350
- Energy Top B Repair: £150-350
- Extrema C Repair: £180-350
- Force W Repair: £180-350
- Modena HE Repair: £180-450
Source
Ferroli F15 fault code information on this page is sourced and cross-checked against the official Ferroli service / installation manuals for each affected model.
- Ferroli Arena 30 C manual (PDF)
- Ferroli Arena 30A manual (PDF)
- Ferroli Bluehelix HiTech RRT manual (PDF)
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026