Medium
7 23 on Ariston E-Combi One 30

Your boiler has detected that the water temperature in one part of your heating system is higher than it should be, causing it to shut down for safety.

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

Zone 3 overheating

Engineer required

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

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