How much does it cost to fix Ariston error code Err / 110?

Typical repair cost for the Ariston Err / 110 fault is £120-250 including labour.

Err / 110 High

Ariston Err / 110 Fault Code

Q: What does the Ariston Err / 110 fault code mean?

Your boiler has detected that the water temperature inside it has risen too high and has shut itself down to prevent damage.

Also written as ERR110 — same fault.

The Ariston Err / 110 fault code means: your boiler has detected that the water temperature inside it has risen too high and has shut itself down to prevent damage.. It appears on 1 Ariston model in our database.

Technical description: Safety stop - see table (Primary Circuit)

Typical repair cost £120-250 (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 Err / 110 fault code

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

HS Premium Repair: £120-250

Source

Ariston Err / 110 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