High
E12 on Biasi Rinnova Adaptive Combi

Your boiler is struggling to ignite because it either isn't receiving enough gas or there is a communication problem within its internal control board.

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

Main electronic p.c.b., Gas supply line

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

E01View →E11View →E13View →

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