How much does it cost to fix Heatline error code F01?

Typical repair cost for the Heatline F01 fault is £100-£280 including labour.

F01 High

Heatline F01 Fault Code

Q: What does the Heatline F01 fault code mean?

Your boiler has failed to light, which means your heating and hot water will not work until the gas supply is restored or a internal ignition fault is fixed.

The Heatline F01 fault code means: your boiler has failed to light, which means your heating and hot water will not work until the gas supply is restored or a internal ignition fault is fixed.. It appears on 9 Heatline models in our database.

Technical description: Ignition failure / no gas / incorrect gas pressure

Typical repair cost £100-£280 (including labour)

DIY fix possible

Check that your gas meter has credit (if using a prepay meter).Ensure the gas emergency control valve is in the 'on' position.Try resetting the boiler by turning the control knob to 'Reset' for 5 seconds.Check if other gas appliances, like a cooker, are working to confirm your gas supply is active.

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Heatline models that show the F01 fault code

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

Source

Heatline F01 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