BoilerFaultCodesBiasi Lockout lamp (red) on Fault Code
Also written as LOCKOUTLAMPREDON — same fault.
The Biasi Lockout lamp (red) on fault code means: your boiler is trying to light but cannot successfully create or detect a flame, causing it to shut down for safety.. It appears on 2 Biasi models in our database.
Technical description: The boiler starts the ignition cycle and remains in lockout. Possible causes: no gas, ignition/flame detection electrode failure, or gas valve failure.
DIY fix possible
Check that your gas supply is turned on at the meterCheck if other gas appliances (like a hob) are workingPress the reset button to attempt a restart
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A cover plan would handle faults like Lockout lamp (red) on: no call-out fees, no surprise bills.
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Biasi models that show the Lockout lamp (red) on fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Biasi Lockout lamp (red) on 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 7 July 2026