How much does it cost to fix Ferroli error code LED 6 yellow (0) [DHW mode]?

Typical repair cost for the Ferroli LED 6 yellow (0) [DHW mode] fault is £120-180 including labour.

LED 6 yellow (0) [DHW mode] Medium

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

Q: What does the Ferroli LED 6 yellow (0) [DHW mode] fault code mean?

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.

Also written as LED6YELLOW0DHWMODE — same fault.

The Ferroli LED 6 yellow (0) [DHW mode] fault code means: 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.. 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

Typical repair cost £120-180 (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 yellow (0) [DHW mode] fault code

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

Source

Ferroli LED 6 yellow (0) [DHW mode] 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