High
H.02 – .02 on Baxi Assure

Your boiler's internal computer has forgotten its identity or hasn't been set up correctly, meaning it doesn't know how to operate your specific heating 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

Temporary error – no input of parameters C1/C2. Printed circuit board (PCB) not configured.

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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