How much does it cost to fix Ariston error code EE7744?

Typical repair cost for the Ariston EE7744 fault is £90-160 including labour.

EE7744 High

Ariston EE7744 Fault Code

Q: What does the Ariston EE7744 fault code mean?

Your boiler has stopped working because one of its internal sensors is reporting an electrical fault and can no longer monitor the temperature of the water coming back from your radiators.

The Ariston EE7744 fault code means: your boiler has stopped working because one of its internal sensors is reporting an electrical fault and can no longer monitor the temperature of the water coming back from your radiators.. It appears on 3 Ariston models in our database.

Technical description: Heating return temperature probe in short circuit

Typical repair cost £90-160 (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 EE7744 fault code

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

Source

Ariston EE7744 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