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 £100-280 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 tried to ignite but was unable to stay lit, meaning your heating and hot water will not work until it is reset or repaired.

Also written as FLAMEFAILUREREDLIGHTON — same fault.

The Baxi Flame Failure (Red Light) ON fault code means: your boiler has tried to ignite but was unable to stay lit, meaning your heating and hot water will not work until it is reset or repaired.. It appears on 3 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 £100-280 (including labour)

DIY fix possible

Locate the selector switch on the front control panelTurn the switch to the 'R' (Reset) position and hold for 5 secondsReturn the switch to its original position and check if the red light goes out

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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 27 April 2026