How much does it cost to fix Ferroli error code Red lockout light?

Typical repair cost for the Ferroli Red lockout light fault is £100-250 including labour.

Red lockout light High

Ferroli Red lockout light Fault Code

Q: What does the Ferroli Red lockout light fault code mean?

Your boiler has detected an issue and stopped working as a safety precaution, likely because the fuel supply is interrupted or the internal pipe for water drainage is blocked.

Also written as REDLOCKOUTLIGHT — same fault.

The Ferroli Red lockout light fault code means: your boiler has detected an issue and stopped working as a safety precaution, likely because the fuel supply is interrupted or the internal pipe for water drainage is blocked.. It appears on 7 Ferroli models in our database.

Technical description: Boiler lock out - check gas supply or condensate discharge

Typical repair cost £100-250 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Ferroli models that show the Red lockout light fault code

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

Source

Ferroli Red lockout light fault code information on this page is sourced and cross-checked against the official Ferroli service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026