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

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

LED 6 (D.H.W.) High

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

Also written as LED6DHW — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code LED 6 (D.H.W.) appears across 1 boiler brand and 2 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has stopped working because it has detected a technical fault related to the water pressure or internal temperature sensors. (As reported on Ferroli Arean)

Pick your boiler brand for the LED 6 (D.H.W.) fix

Ferroli LED 6 (D.H.W.) 2 models

Source

Information for the LED 6 (D.H.W.) fault code is sourced from the official service / installation manual for each model that displays it. Read more about how we source fault codes →

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026