How much does it cost to fix Ferroli error code B LED 1?

Typical repair cost for the Ferroli B LED 1 fault is £120-220 including labour.

B LED 1 High

Ferroli B LED 1 Fault Code

Q: What does the Ferroli B LED 1 fault code mean?

Your boiler has lost all power and is completely shut down, likely due to a blown internal fuse or an issue with your home's electrical supply.

Also written as BLED1 — same fault.

The Ferroli B LED 1 fault code means: your boiler has lost all power and is completely shut down, likely due to a blown internal fuse or an issue with your home's electrical supply.. It appears on 2 Ferroli models in our database.

Technical description: No main electricity/switches off, fuse blown.

Typical repair cost £120-220 (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 B LED 1 fault code

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

Source

Ferroli B 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