Yellow Low

Chaffoteaux Yellow Fault Code

Also written as YELLOW — same fault.

The Chaffoteaux Yellow fault code means: your boiler is operating normally and is currently running as expected.. It appears on 1 Chaffoteaux model in our database.

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description: run

DIY fix possible

No action required, the boiler is functioning correctly.

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Chaffoteaux models that show the Yellow fault code

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

Source

Chaffoteaux Yellow fault code information on this page is sourced and cross-checked against the official Chaffoteaux service / installation manuals for each affected model.

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