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

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

Yellow L.E.D. H Emergency

Ariston Yellow L.E.D. H Fault Code

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

Your boiler has detected that fumes are not being properly vented outside, so it has safely shut itself down to prevent a carbon monoxide hazard.

Also written as YELLOWLEDH — same fault.

The Ariston Yellow L.E.D. H fault code means: your boiler has detected that fumes are not being properly vented outside, so it has safely shut itself down to prevent a carbon monoxide hazard.. It appears on 6 Ariston models in our database.

Technical description: Temporary Shutdown Due To Defective Discharge of Exhaust Fumes: In the event of a defective discharge of exhaust products

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 Yellow L.E.D. H fault code

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

Source

Ariston Yellow L.E.D. H 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