How much does it cost to fix Ferroli error code F20?

Typical repair cost for the Ferroli F20 fault is £120-250 including labour.

F20 High

Ferroli F20 Fault Code

Q: What does the Ferroli F20 fault code mean?

Your boiler has stopped because the flame inside it has unexpectedly gone out while it was trying to heat your water or home.

The Ferroli F20 fault code means: your boiler has stopped because the flame inside it has unexpectedly gone out while it was trying to heat your water or home.. It appears on 1 Ferroli model in our database.

Technical description: Combustion control (flame loss during operation)

Typical repair cost £120-250 (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 F20 fault code

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

Arena 30A Repair: £120-250

Source

Ferroli F20 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 27 April 2026