LED2 on High

Ferroli LED2 on Fault Code

Also written as LED2ON — same fault.

The Ferroli LED2 on fault code means: your boiler has entered a safety lockout mode because it either failed to light properly or it has detected that the system is getting too hot.. It appears on 1 Ferroli model 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 shut down warning / Lockout (e.g. safety thermostat activated or ignition failure)
Typical repair cost £100-280 (including labour)

DIY fix possible

Check that your gas supply is turned on and you have credit on your meter.Locate the selector switch and turn it to the 'R' (Reset) position for several seconds, then back to 'On'.Ensure your radiator valves are open and the system pressure is between 1 and 1.5 bar.

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Ferroli models that show the LED2 on fault code

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

Source

Ferroli LED2 on 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 7 July 2026