LED 5 Flashing High

Ferroli LED 5 Flashing Fault Code

Also written as LED5FLASHING — same fault.

The Ferroli LED 5 Flashing fault code means: your boiler's electronic control centre is failing to communicate properly, which has caused the system to shut down for safety.. It appears on 3 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: Faulty main board or external wiring fault (check 2A fuse)
Typical repair cost £250-450 (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 LED 5 Flashing fault code

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

Source

Ferroli LED 5 Flashing 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