BoilerFaultCodesBaxi Indicator Neons Fault Code
Also written as INDICATORNEONS — same fault.
The Baxi Indicator Neons fault code means: your boiler is using a combination of flashing or steady lights to signal exactly what is wrong with the system, ranging from simple pressure issues to internal component failure.. It appears on 5 Baxi models in our database.
Technical description: Used to monitor the boiler operation and identify potential fault conditions as part of the Fault Finding section (detailed in Section 13.0).
DIY fix possible
Check if the gas supply is turned on and credit is on the meterEnsure the system pressure is between 1.0 and 1.5 bar on the gaugeTurn the selector switch to the reset position for five seconds and release
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Gas Safe Register →Baxi models that show the Indicator Neons fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Baxi Indicator Neons 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