LED 1 green (0) High

Ferroli LED 1 green (0) Fault Code

Also written as LED1GREEN0 — same fault.

The Ferroli LED 1 green (0) fault code means: your boiler is currently completely unresponsive because it is not receiving any electrical power.. 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: No mains electricity/switches off/fuse blown.
Typical repair cost £80-150 (including labour)

DIY fix possible

Check that the boiler isolator switch (usually a white switch near the boiler) is set to the ON position.Check your home's main fuse box (consumer unit) to see if any circuit breakers have tripped.Locate the fused spur next to the boiler and check if the replaceable fuse inside has blown.

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Ferroli models that show the LED 1 green (0) fault code

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

Source

Ferroli LED 1 green (0) 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