How much does it cost to fix Ariston error code 2 02?

Typical repair cost for the Ariston 2 02 fault is £120-220 including labour.

2 02 Medium

Ariston 2 02 Fault Code

Q: What does the Ariston 2 02 fault code mean?

Your boiler is having trouble reading the temperature of the water inside its internal storage tank, which means it cannot tell if more hot water needs to be heated.

Also written as 202 — same fault.

The Ariston 2 02 fault code means: your boiler is having trouble reading the temperature of the water inside its internal storage tank, which means it cannot tell if more hot water needs to be heated.. It appears on 9 Ariston models in our database.

Technical description: Bottom storage temperature probe open / short circuit

Typical repair cost £120-220 (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 2 02 fault code

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

Source

Ariston 2 02 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