High
H.02 – .02 on Baxi Suprima 80

Your boiler’s internal computer chip has lost its settings and doesn't know how to operate the 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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