High
E.04 – .13 on Baxi 400 Combi (range)

Your boiler's internal fan, which is essential for safely clearing exhaust fumes, has stopped spinning or cannot communicate with the main system.

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

Permanent fault. Fan rotor blocked, fan seized or wiring to fan damaged.

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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