How much does it cost to fix Baxi error code Flame Failure (Red Light) ON?

Typical repair cost for the Baxi Flame Failure (Red Light) ON fault is £120-250 including labour.

Flame Failure (Red Light) ON High

Baxi Flame Failure (Red Light) ON Fault Code

Q: What does the Baxi Flame Failure (Red Light) ON fault code mean?

Your boiler has stopped working because it couldn't safely ignite its internal flame, which means your heating and hot water have turned off as a safety precaution.

Also written as FLAMEFAILUREREDLIGHTON — same fault.

The Baxi Flame Failure (Red Light) ON fault code means: your boiler has stopped working because it couldn't safely ignite its internal flame, which means your heating and hot water have turned off as a safety precaution.. It appears on 5 Baxi models in our database.

Technical description: This indicates that the Burner has failed to light. Press the Reset Button. If Flame Failure occurs frequently consult your Installer.

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 Flame Failure (Red Light) ON fault code

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

Source

Baxi Flame Failure (Red Light) 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 7 July 2026