BoilerFaultCodesBiasi Lock-out signal lamp 6 Fault Code
Also written as LOCKOUTSIGNALLAMP6 — same fault.
The Biasi Lock-out signal lamp 6 fault code means: your boiler is trying to start but the flame is failing to ignite, causing it to shut down for safety precautions.. It appears on 1 Biasi model in our database.
Technical description: The boiler fails to light during the ignition attempt period. The full sequence control p.c.b. will go to lockout.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Biasi models that show the Lock-out signal lamp 6 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Biasi Lock-out signal lamp 6 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