High
E.02 – .21 on Baxi Assure

Your boiler's internal computer settings have been changed or are set incorrectly, meaning the control board doesn't know how to operate the boiler properly.

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

Jumper 3 changed – check position of jumper 3.

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

E28View →E168View →

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