BoilerFaultCodesChaffoteaux 07 Fault Code
The Chaffoteaux 07 fault code means: your boiler has stopped working because water is not moving around the internal system properly, causing it to shut down to prevent overheating.. It appears on 5 Chaffoteaux models in our database.
Technical description: No water circulation in primary circuit
DIY fix possible
Check that the boiler pressure gauge is between 1 and 1.5 barEnsure all radiator valves and isolation valves under the boiler are fully openGently bleed your radiators to remove any trapped air pocketsReset the boiler using the 'R' or Reset button
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Chaffoteaux models that show the 07 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Chaffoteaux 07 fault code information on this page is sourced and cross-checked against the official Chaffoteaux service / installation manuals for each affected model.
- Chaffoteaux Calydra 100 manual (PDF)
- Chaffoteaux Calydra 24 Green manual (PDF)
- Chaffoteaux Talia Green 25 manual (PDF)
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026