Low
1 14 on Ariston Clas One

Your boiler is having trouble communicating with the outdoor weather sensor, which means it cannot automatically adjust your heating based on the temperature outside.

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 circuit open / short circuit

Engineer required

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

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