How much does it cost to fix Baxi error code Burner On?

Typical repair cost for the Baxi Burner On fault is £120-250 including labour.

Burner On High

Baxi Burner On Fault Code

Q: What does the Baxi Burner On fault code mean?

Your boiler is signalling that it is trying to light, but it is encountering a blockage or electrical issue that prevents the fuel from flowing correctly.

Also written as BURNERON — same fault.

The Baxi Burner On fault code means: your boiler is signalling that it is trying to light, but it is encountering a blockage or electrical issue that prevents the fuel from flowing correctly.. It appears on 3 Baxi models in our database.

Technical description: Indicator light - Check burner pressure, main injector blockage, and mains solenoid continuity

Typical repair cost £120-250 (including labour)

Engineer required

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

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Baxi models that show the Burner On fault code

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

Source

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

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