How much does it cost to fix Heatline error code E01?

Typical repair cost for the Heatline E01 fault is £100-£250 including labour.

E01 High

Heatline E01 Fault Code

Q: What does the Heatline E01 fault code mean?

Your boiler is unable to light the flame needed to heat your water and home, often because the gas supply is interrupted or there is a problem with the internal spark.

The Heatline E01 fault code means: your boiler is unable to light the flame needed to heat your water and home, often because the gas supply is interrupted or there is a problem with the internal spark.. It appears on 7 Heatline models in our database.

Technical description: Ignition failure: The boiler has failed to ignite after a series of attempts. Check gas supply and ignition electrode.

Typical repair cost £100-£250 (including labour)

DIY fix possible

Check that your gas emergency control valve is in the 'on' positionIf you have a pre-payment meter, verify that you have enough creditReset the boiler by turning the selector knob to 'Reset' for 5 seconds and then back to the heating/hot water position

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Heatline models that show the E01 fault code

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

Source

Heatline E01 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