BoilerFaultCodesBaxi neon flashing (Spark/Ignition) Fault Code
Also written as NEONFLASHINGSPARKIGNITION — same fault.
The Baxi neon flashing (Spark/Ignition) fault code means: your boiler is failing to light the burner because it cannot generate the electrical spark needed to ignite the gas.. It appears on 4 Baxi models in our database.
Technical description: No spark at ignition electrode for up to 10 seconds; turn selector to reset, if persists refer to sections H and K.
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 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.
- Baxi Bahama 80e / 105e manual (PDF)
- Baxi Combi 80e manual (PDF)
- Baxi Combi Instant 80/105 HE manual (PDF)
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026