How much does it cost to fix Ariston error code E06?

Typical repair cost for the Ariston E06 fault is £120-200 including labour.

E06 High

Ariston E06 Fault Code

Q: What does the Ariston E06 fault code mean?

Your boiler has lost the ability to accurately measure the temperature of the water returning to it, so it has shut down to prevent potential overheating.

The Ariston E06 fault code means: your boiler has lost the ability to accurately measure the temperature of the water returning to it, so it has shut down to prevent potential overheating.. It appears on 3 Ariston models in our database.

Technical description: Central Heating return temperature probe fault (N.T.C. open or short circuit)

Typical repair cost £120-200 (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 E06 fault code

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

Source

Ariston E06 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