F10 High

Ferroli F10 Fault Code

The Ferroli F10 fault code means: your boiler's internal sensor that monitors the temperature of water leaving the unit has stopped working correctly, and the system has shut down to prevent overheating.. It appears on 14 Ferroli models in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: Flow sensor error – sensor damaged, short circuited, sensor damaged or wiring broken

What causes the Ferroli F10 fault?

This fault occurs when the boiler's control board loses communication with the temperature sensor attached to the main heating pipe. The most common reason is that the internal sensor has physically degraded and failed, or the electrical wires connecting it to the main computer have become loose or damaged.

Typical repair cost £100-180 (including labour)

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 F10 fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Ferroli F10 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 31 August 2026