High
E.01 – .11 on Baxi Netaheat

Your boiler's fan isn't spinning at the right speed to safely clear waste gases, often caused by strong winds blowing into the flue or an internal part failing.

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

Incorrect fan speed – external draught over the boiler or defective gas/air unit.

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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