06 Low

Chaffoteaux 06 Fault Code

The Chaffoteaux 06 fault code means: your boiler has detected that the water temperature inside the system is getting too cold, so it has briefly activated its internal heating to prevent the pipes from freezing.. It appears on 12 Chaffoteaux models 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: Burner anti-freeze

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Chaffoteaux models that show the 06 fault code

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

Source

Chaffoteaux 06 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 31 August 2026