How much does it cost to fix boiler error code Yellow L.E.D. H illuminated?

Typical repair cost for the boiler Yellow L.E.D. H illuminated fault is £120-250 including labour.

Yellow L.E.D. H illuminated Emergency

Boiler Fault Code Yellow L.E.D. H illuminated

Also written as YELLOWLEDHILLUMINATED — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Yellow L.E.D. H illuminated appears across 1 boiler brand and 1 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has temporarily turned itself off because it is struggling to safely clear away waste gases, which could lead to harmful fumes building up if not addressed. (As reported on Ariston Egis 24 MFFI)

Pick your boiler brand for the Yellow L.E.D. H illuminated fix

Ariston Yellow L.E.D. H illuminated 1 model

Source

Information for the Yellow L.E.D. H 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