BoilerFaultCodesChaffoteaux E 02 Fault Code
Also written as E02 — same fault.
The Chaffoteaux E 02 fault code means: your boiler has temporarily stopped working because it cannot circulate water through the system properly, usually due to low water pressure.. It appears on 3 Chaffoteaux models in our database.
Technical description: No Circulation (check pump and water pressure)
DIY fix possible
Check the pressure gauge on the front of your boiler to see if it has dropped below 1 bar.Use the filling loop underneath the boiler to top the system pressure back up to around 1 to 1.5 bars.Reset the boiler using the reset button to clear the fault code.
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Chaffoteaux models that show the E 02 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Chaffoteaux E 02 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