How much does it cost to fix Heatline error code F71?

Typical repair cost for the Heatline F71 fault is £120-200 including labour.

F71 High

Heatline F71 Fault Code

Q: What does the Heatline F71 fault code mean?

Your boiler has stopped working because it is unable to accurately measure the temperature of the water being sent to your radiators, causing it to shut down for safety.

The Heatline F71 fault code means: your boiler has stopped working because it is unable to accurately measure the temperature of the water being sent to your radiators, causing it to shut down for safety.. It appears on 8 Heatline models in our database.

Technical description: Flow heating temperature sensor fault

Typical repair cost £120-200 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Heatline models that show the F71 fault code

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

Capriz Plus Repair: £120-200
Centurion 25 Repair: £120-200
Compact 24 Repair: £120-200
Compact 30 Repair: £120-200
Monza Repair: £120-200
Solaris Repair: £120-200
Vizo 24 Repair: £120-200
Vizo 28 Repair: £120-200

Source

Heatline F71 fault code information on this page is sourced and cross-checked against the official Heatline service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026