How much does it cost to fix Ariston error code L.E.D. H (Yellow)?

Typical repair cost for the Ariston L.E.D. H (Yellow) fault is £120-250 including labour.

L.E.D. H (Yellow) Emergency

Ariston L.E.D. H (Yellow) Fault Code

Q: What does the Ariston L.E.D. H (Yellow) fault code mean?

Your boiler has detected an issue with venting its waste gases and has safely turned itself off to prevent carbon monoxide buildup.

Also written as LEDHYELLOW — same fault.

The Ariston L.E.D. H (Yellow) fault code means: your boiler has detected an issue with venting its waste gases and has safely turned itself off to prevent carbon monoxide buildup.. It appears on 5 Ariston models in our database.

Technical description: EXHAUST DISCHARGE ANOMALY SHUTDOWN: The boiler is fitted with safety devices, which in the event of defective discharge of exhaust products, automatically interrupts the gas supply. Shutdown is temporary (approx 15 minutes).

Typical repair cost £120-250 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Ariston models that show the L.E.D. H (Yellow) fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Ariston L.E.D. H (Yellow) fault code information on this page is sourced and cross-checked against the official Ariston service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026