LED 6 yellow (0) [DHW mode] Medium

Boiler Fault Code LED 6 yellow (0) [DHW mode]

Also written as LED6YELLOW0DHWMODE — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code LED 6 yellow (0) [DHW mode] 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 is struggling to detect the temperature of your hot water because of a faulty connection or sensor, which means it will likely stop providing hot water until fixed. (As reported on Ferroli Arean)

Pick your boiler brand for the LED 6 yellow (0) [DHW mode] fix

Ferroli LED 6 yellow (0) [DHW mode] 2 models

Source

Information for the LED 6 yellow (0) [DHW mode] 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