neon flashing (Spark/Ignition) High

Baxi neon flashing (Spark/Ignition) Fault Code

Also written as NEONFLASHINGSPARKIGNITION — same fault.

The Baxi neon flashing (Spark/Ignition) fault code means: your boiler tried to light the gas but failed, so it has locked itself out for safety.. It appears on 1 Baxi model in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: Spark at ignition electrodes for up to 10 seconds failed to ignite burner. Reset required.
Typical repair cost £90-280 (including labour)

DIY fix possible

Check if other gas appliances in your home (like a hob) are working to ensure gas is reaching the property.Ensure your prepaid gas meter has credit if applicable.Turn the selector switch to the 'R' (Reset) position for at least 5 seconds, then release it back to the 'On' position.

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Baxi models that show the neon flashing (Spark/Ignition) fault code

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

Source

Baxi neon flashing (Spark/Ignition) 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