yellow ❍ High

Ariston yellow ❍ Fault Code

Also written as YELLOW — same fault.

The Ariston yellow ❍ fault code means: your boiler's computer memory has encountered a data corruption error, meaning it can no longer remember its settings or operating instructions.. It appears on 1 Ariston model in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: EEPROM error
Typical repair cost £250-450 (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 ❍ fault code

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

Source

Ariston 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