How much does it cost to fix Ferroli error code Red LED on/Flashing?

Typical repair cost for the Ferroli Red LED on/Flashing fault is £100-280 including labour.

Red LED on/Flashing High

Ferroli Red LED on/Flashing Fault Code

Q: What does the Ferroli Red LED on/Flashing fault code mean?

Your boiler has safety-locked itself to prevent damage or because it failed to light three times in a row.

Also written as REDLEDONFLASHING — same fault.

The Ferroli Red LED on/Flashing fault code means: your boiler has safety-locked itself to prevent damage or because it failed to light three times in a row.. It appears on 2 Ferroli models in our database.

Technical description: Boiler is in lockout

Typical repair cost £100-280 (including labour)

DIY fix possible

Check if your gas supply is active (e.g., check other gas appliances)Locate the reset knob/button on the control panelTurn the knob to 'Reset' for 2 seconds and release to see if the boiler restarts

Find a Gas Safe engineer

Search the official register for a qualified engineer in your area.

Gas Safe Register →

Ferroli models that show the Red LED on/Flashing fault code

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

Source

Ferroli Red LED on/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