LED 1 High

Ferroli LED 1 Fault Code

Also written as LED1 — same fault.

The Ferroli LED 1 fault code means: your boiler is currently completely unresponsive because it is not receiving any power, which might be due to a tripped switch, a disconnected plug, or a blown internal fuse.. It appears on 5 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 £90-180 (including labour)

DIY fix possible

Check your home's central fuse box to ensure the boiler circuit breaker hasn't tripped.Verify the fused spur switch located near the boiler is turned to the ON position.Inspect the plug or connection point to ensure it is secure and the external fuse has not blown.

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Ferroli models that show the LED 1 fault code

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

Source

Ferroli LED 1 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