How much does it cost to fix Ferroli error code F44?

Typical repair cost for the Ferroli F44 fault is £120-220 including labour.

F44 High

Ferroli F44 Fault Code

Q: What does the Ferroli F44 fault code mean?

Your boiler has lost the ability to accurately measure the temperature of the water circulating back into it, so it has shut down as a precaution to prevent overheating.

The Ferroli F44 fault code means: your boiler has lost the ability to accurately measure the temperature of the water circulating back into it, so it has shut down as a precaution to prevent overheating.. It appears on 4 Ferroli models in our database.

Technical description: Return sensor fault

Typical repair cost £120-220 (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 F44 fault code

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

Source

Ferroli F44 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