How much does it cost to fix Biasi error code Lock---out signal lamp red?

Typical repair cost for the Biasi Lock---out signal lamp red fault is £100-240 including labour.

Lock---out signal lamp red High

Biasi Lock---out signal lamp red Fault Code

Q: What does the Biasi Lock---out signal lamp red fault code mean?

Your boiler is failing to recognise that the flame has lit, causing it to repeatedly try to spark before shutting down for safety.

Also written as LOCKOUTSIGNALLAMPRED — same fault.

The Biasi Lock---out signal lamp red fault code means: your boiler is failing to recognise that the flame has lit, causing it to repeatedly try to spark before shutting down for safety.. It appears on 4 Biasi models in our database.

Technical description: Boiler locks out and sparks continue to ignite again. By pressing the reset push-bottom the boiler starts the ignition cycle.

Typical repair cost £100-240 (including labour)

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 red fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Biasi Lock---out signal lamp red 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