Low
407 on Ariston HS Premium

Your boiler is having trouble communicating with the temperature sensor in your home, which means it cannot accurately determine when to turn the heating on or off.

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

Room sensor error

Engineer required

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

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