High
ER 12 on Ferroli Xignal

Your boiler has detected a problem with the part that controls the gas supply to the burner, meaning it cannot safely start or maintain a flame for heating or hot water.

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

FAULT MODUREG - Defective gas valve modulator, No power to Modureg

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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