How much does it cost to fix Ariston error code Red L.E.D. G?

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

Red L.E.D. G High

Ariston Red L.E.D. G Fault Code

Q: What does the Ariston Red L.E.D. G fault code mean?

Your boiler has automatically turned itself off because the water inside became too hot, which is a safety feature to prevent damage or dangerous conditions.

Also written as REDLEDG — same fault.

The Ariston Red L.E.D. G fault code means: your boiler has automatically turned itself off because the water inside became too hot, which is a safety feature to prevent damage or dangerous conditions.. It appears on 6 Ariston models in our database.

Technical description: SHUTDOWN DUE TO OVERHEATING. This anomaly is signalled by the red “G” L.E.D. The boiler shuts off because the safety thermostat detected that the boiler temperature has reached the temperature limit.

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 Red L.E.D. G fault code

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

Source

Ariston Red L.E.D. G 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