BoilerFaultCodes Indicator Neons High
Boiler Fault Code Indicator Neons
Also written as INDICATORNEONS — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Indicator Neons appears across 1 boiler brand and 5 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning 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. (As reported on Baxi Promax Heat)
Pick your boiler brand for the Indicator Neons fix
Source
Information for the Indicator Neons fault code is sourced from the official service / installation manual for each model that displays it. Read more about how we source fault codes →
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026