How much does it cost to fix Ariston error code AA 0033?

Typical repair cost for the Ariston AA 0033 fault is £150-350 including labour.

AA 0033 Emergency

Ariston AA 0033 Fault Code

Q: What does the Ariston AA 0033 fault code mean?

Your boiler has detected that the water inside the heating system has become dangerously hot and has shut itself down to prevent damage or safety risks.

Also written as AA0033 — same fault.

The Ariston AA 0033 fault code means: your boiler has detected that the water inside the heating system has become dangerously hot and has shut itself down to prevent damage or safety risks.. It appears on 1 Ariston model in our database.

Technical description: The heating flow temperature exceeds 103oC during operation

Typical repair cost £150-350 (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 AA 0033 fault code

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

Clas One Repair: £150-350

Source

Ariston AA 0033 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