How much does it cost to fix Ferroli error code LED 6 (D.H.W.)?

Typical repair cost for the Ferroli LED 6 (D.H.W.) fault is £120-250 including labour.

LED 6 (D.H.W.) High

Ferroli LED 6 (D.H.W.) Fault Code

Q: What does the Ferroli LED 6 (D.H.W.) fault code mean?

Your boiler has stopped working because it has detected a technical fault related to the water pressure or internal temperature sensors.

Also written as LED6DHW — same fault.

The Ferroli LED 6 (D.H.W.) fault code means: your boiler has stopped working because it has detected a technical fault related to the water pressure or internal temperature sensors.. It appears on 2 Ferroli models in our database.

Technical description: Short circuit on D.H.W. sensor (42) or resistance lower than 500 Ohm; C.H. limit thermostat (50) open circuit (pump run); C.H. water pressure low(114 open circuit).

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 LED 6 (D.H.W.) fault code

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

Source

Ferroli LED 6 (D.H.W.) 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