Medium
4 12 on Ariston E-Combi One 24

Your boiler has lost communication with the temperature sensor that controls your second heating zone, meaning it can't tell how warm that part of your home is.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

Technical description

Room sensor circuit open or short circuit ZONA 2

Engineer required

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

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Related fault codes

4 11View →4 13View →

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