High
7 05 on Ariston E-Combi Evo

Your boiler is struggling to accurately detect the flow of water through its internal system because a sensor responsible for monitoring this process has stopped working correctly.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

Hydraulic separation sensor defective

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

7 04View →7 06View →

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