207 High

Ariston 207 Fault Code

The Ariston 207 fault code means: your boiler has lost communication with its smart controls or sensors, meaning it cannot receive the correct instructions to heat your home.. It appears on 1 Ariston model in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: Clas HE evoClas he evo systemE-combi evoE-system evo
Typical repair cost £100-250 (including labour)

DIY fix possible

Turn the boiler power off and back on at the fused spur switch to reset the internal electronicsCheck that your external thermostat or smart Hub is powered and connected to your Wi-FiPress the 'Reset' button on the boiler front panel

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Ariston models that show the 207 fault code

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

Source

Ariston 207 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