How much does it cost to fix boiler error code neon illuminated?

Typical repair cost for the boiler neon illuminated fault is £0-80 including labour.

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Boiler Fault Code neon illuminated

Also written as NEONILLUMINATED — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code neon illuminated appears across 3 boiler brands and 12 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is receiving electrical power and is switched on, but it is currently in standby mode waiting for a signal to provide heat or hot water. (As reported on Potterton Performa 24 Eco HE)

Pick your boiler brand for the neon illuminated fix

Alpha neon illuminated 2 models Baxi neon illuminated 6 models Potterton neon illuminated 4 models

Source

Information for the neon illuminated 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