How much does it cost to fix Ferroli error code LED5 on?

Typical repair cost for the Ferroli LED5 on fault is £120-250 including labour.

LED5 on High

Ferroli LED5 on Fault Code

Q: What does the Ferroli LED5 on fault code mean?

Your boiler is receiving power, but it is not currently operating because it has detected an internal error that requires attention.

Also written as LED5ON — same fault.

The Ferroli LED5 on fault code means: your boiler is receiving power, but it is not currently operating because it has detected an internal error that requires attention.. It appears on 2 Ferroli models in our database.

Technical description: Electric power supply (Permanent light)

Typical repair cost £120-250 (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 LED5 on fault code

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

Source

Ferroli LED5 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 27 April 2026