How much does it cost to fix Heatline error code F02?

Typical repair cost for the Heatline F02 fault is £60-120 including labour.

F02 High

Heatline F02 Fault Code

Q: What does the Heatline F02 fault code mean?

Your boiler has detected that the water pressure inside the system has become too high, causing it to shut down to prevent damage.

The Heatline F02 fault code means: your boiler has detected that the water pressure inside the system has become too high, causing it to shut down to prevent damage.. It appears on 2 Heatline models in our database.

Technical description: Maximum water pressure exceeded

Typical repair cost £60-120 (including labour)

DIY fix possible

Locate a radiator in your home with a bleed valvePlace a cloth and container under the valveSlowly open the valve to release air and a little water until the pressure gauge on the front of the boiler drops to between 1 and 1.5 barEnsure the valve is securely tightened once finished

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Heatline models that show the F02 fault code

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

Source

Heatline F02 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