How much does it cost to fix Ferroli error code LED 6?

Typical repair cost for the Ferroli LED 6 fault is £80-150 including labour.

LED 6 High

Ferroli LED 6 Fault Code

Q: What does the Ferroli LED 6 fault code mean?

Your boiler has detected that there is not enough water inside the system to operate safely, so it has turned itself off to prevent damage.

Also written as LED6 — same fault.

The Ferroli LED 6 fault code means: your boiler has detected that there is not enough water inside the system to operate safely, so it has turned itself off to prevent damage.. It appears on 3 Ferroli models in our database.

Technical description: Low water pressure switch - WARNING

Typical repair cost £80-150 (including labour)

DIY fix possible

Locate the filling loop, which is usually a flexible silver hose connected to two valves under the boiler.Open the valves slowly to allow water into the system until the pressure gauge on the front of the boiler reads between 1.0 and 1.5 bar.Close the valves firmly and check for any leaks around the connection points.

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Ferroli models that show the LED 6 fault code

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

Source

Ferroli LED 6 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