How much does it cost to fix Ferroli error code E44?

Typical repair cost for the Ferroli E44 fault is £150-250 including labour.

E44 High

Ferroli E44 Fault Code

Q: What does the Ferroli E44 fault code mean?

Your boiler has detected a disagreement between two internal temperature sensors, meaning it cannot accurately tell how hot the water inside is and has safely shut down to prevent damage.

The Ferroli E44 fault code means: your boiler has detected a disagreement between two internal temperature sensors, meaning it cannot accurately tell how hot the water inside is and has safely shut down to prevent damage.. It appears on 1 Ferroli model in our database.

Technical description: Safety NTC and flow NTC difference

Typical repair cost £150-250 (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 E44 fault code

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

Maxima 35 S Repair: £150-250

Source

Ferroli E44 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