Medium
7 03 on Ariston E-Combi One 24

Your boiler has detected a fault with a temperature sensor in the third heating zone, meaning it can no longer accurately measure or control the heat for that specific area.

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 send sensor defective

Engineer required

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

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Related fault codes

701View →702View →

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