7. Low

Ariston 7. Fault Code

Also written as 7 — same fault.

The Ariston 7. fault code means: your boiler is working correctly but is currently being told not to provide heating by your thermostat, timer, or because it is set to summer mode.. It appears on 1 Ariston model in our database.

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description: There is no demand of heat due to the external regulations of the boiler or boiler is switched on 'summer' position

DIY fix possible

Check that your room thermostat is turned up higher than the current room temperature.Ensure the boiler is not set to 'Summer' mode if you are trying to use the central heating.Verify that your external programmer or timer is set to an 'On' period.

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Ariston models that show the 7. fault code

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

Source

Ariston 7. 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