lockout light High

Ferroli lockout light Fault Code

Also written as LOCKOUTLIGHT — same fault.

The Ferroli lockout light fault code means: your boiler has safety-locked itself to prevent damage and simply needs a manual restart to try and fire up again.. It appears on 2 Ferroli models in our database.

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: Boiler shutdown requiring the on/off/reset switch (A) to be turned clockwise against the spring tension to the reset position and released.
Typical repair cost £100-280 (including labour)

DIY fix possible

Locate the main On/Off/Reset selector switch (marked A) on the control panel.Turn the switch clockwise against the spring tension to the 'Reset' position.Release the switch and wait for the boiler to attempt the ignition sequence.

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Ferroli models that show the lockout light fault code

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

Source

Ferroli 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