Low
S 31 on Ariston Genus 27

Your boiler has lost its connection to the outside temperature sensor, which means the heating might not adjust correctly to the weather until it is fixed.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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

External sensor short circuit

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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