How much does it cost to fix Heatline error code F00?

Typical repair cost for the Heatline F00 fault is £120-£200 including labour.

F00 High

Heatline F00 Fault Code

Q: What does the Heatline F00 fault code mean?

Your boiler has lost the ability to read the temperature of the water circulating through your heating system, so it has shut itself down to prevent it from overheating.

The Heatline F00 fault code means: your boiler has lost the ability to read the temperature of the water circulating through your heating system, so it has shut itself down to prevent it from overheating.. 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 F00 fault code

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

Capriz Plus Repair: £120-220
Centurion 25 Repair: £120-220
Compact 24 Repair: £120-220
Compact 30 Repair: £120-220
Monza Repair: £120-£200
Solaris Repair: £120-220
Vizo 24 Repair: £120-220
Vizo 28 Repair: £120-220

Source

Heatline F00 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