Medium
7 01 on Ariston Clas One

Your boiler has lost the connection to the temperature sensor for your secondary heating zone, which may prevent that specific part of your home from heating up properly.

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 2 circulation sensor open / 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

7 02View →7 03View →

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