How much does it cost to fix Ariston error code E02 026?

Typical repair cost for the Ariston E02 026 fault is £150-350 including labour.

E02 026 High

Ariston E02 026 Fault Code

Q: What does the Ariston E02 026 fault code mean?

Your boiler has detected that the main burner is failing to stay alight or ignite properly, resulting in a loss of heating and hot water.

Also written as E02026 — same fault.

The Ariston E02 026 fault code means: your boiler has detected that the main burner is failing to stay alight or ignite properly, resulting in a loss of heating and hot water.. It appears on 5 Ariston models in our database.

Technical description: Main burner

Typical repair cost £150-350 (including labour)

Engineer required

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

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Ariston models that show the E02 026 fault code

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

Genus 27 Repair: £120-£350
Genus 30 Plus Repair: £150-350
Genus One 24 Repair: £150-300
Genus One 30 Repair: £150-300
Genus Premium Repair: £120-£350

Source

Ariston E02 026 fault code information on this page is sourced and cross-checked against the official Ariston service / installation manuals for each affected model.

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