How much does it cost to fix Ferroli error code E05?

Typical repair cost for the Ferroli E05 fault is £90-160 including labour.

E05 High

Ferroli E05 Fault Code

Q: What does the Ferroli E05 fault code mean?

Your boiler has lost its ability to measure the temperature of the water flowing to your radiators, which prevents the system from heating your home safely.

The Ferroli E05 fault code means: your boiler has lost its ability to measure the temperature of the water flowing to your radiators, which prevents the system from heating your home safely.. It appears on 9 Ferroli models in our database.

Technical description: Central heating flow temperature sensor fault

Typical repair cost £90-160 (including labour)

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 →

Ferroli models that show the E05 fault code

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

Arean Repair: £120-200
Domina 102 Repair: £120-220
DOMINAplus F24D Repair: £120-200
DOMINAplus F28D Repair: £120-200
Maxima 35 S Repair: £120-220
Modena F Repair: £90-160
Modena HE Repair: £120-200
Optima 201 Repair: £120-200
Xignal Repair: £120-200

Source

Ferroli E05 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