High
E.01 – .17 on Baxi Suprima 70

Your boiler has likely stopped working because it is unable to move water around the system or it has lost contact with its internal temperature sensors.

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

Reset the boiler – no circulation, sensor fault either not connected or has a bad connection.

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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