High
1 10 on Ariston Egis

Your boiler is struggling to accurately measure its own internal water temperature because the sensor responsible for this task is failing or its connection has been interrupted.

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

C.H. Flow temp. probe circuit open / short circuit

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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