Medium
2 02 on Ariston Clas System 28

Your boiler is having trouble 'talking' to the temperature sensor in your hot water storage tank, meaning it cannot accurately tell if your water needs heating.

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

Circuito aperto o cortocircuito sonda accumulo bassa

Engineer required

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

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Related fault codes

2 01View →

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