How much does it cost to fix Ariston error code AA0022?

Typical repair cost for the Ariston AA0022 fault is £150-300 including labour.

AA0022 High

Ariston AA0022 Fault Code

Q: What does the Ariston AA0022 fault code mean?

Your boiler is failing to ignite because it cannot detect that the water is warming up after a few attempts, meaning you currently have no heating or hot water.

The Ariston AA0022 fault code means: your boiler is failing to ignite because it cannot detect that the water is warming up after a few attempts, meaning you currently have no heating or hot water.. It appears on 7 Ariston models in our database.

Technical description: After three attempts at ignition, no increase in DT was detected

Typical repair cost £150-300 (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 AA0022 fault code

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

Source

Ariston AA0022 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