Medium
S 26 on Ariston Genus One 24

Your boiler is having trouble 'talking' to the temperature sensor inside your hot water tank because of an electrical wiring or component issue.

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

Tank sensor short circuit

Engineer required

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

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Related fault codes

S 25View →S 27View →

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