BoilerFaultCodesBiasi E30 Fault Code
The Biasi E30 fault code means: your boiler is struggling to get a steady gas supply or there is a communication issue with its main control board, meaning it cannot ignite safely.. It appears on 1 Biasi model in our database.
Technical description: Gas supply line / Main electronic p.c.b.
DIY fix possible
Check that your gas emergency control valve is in the 'on' positionIf you have a pre-payment meter, ensure you have sufficient creditPress and hold the 'Reset' button for 5 seconds to clear the fault
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Gas Safe Register →Biasi models that show the E30 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Biasi E30 fault code information on this page is sourced and cross-checked against the official Biasi service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026