BoilerFaultCodesChaffoteaux LOW WATER TEMPERATURE Fault Code
Also written as LOWWATERTEMPERATURE — same fault.
The Chaffoteaux LOW WATER TEMPERATURE fault code means: your boiler is struggling to heat the water properly because the internal burner is not getting enough fuel or the airflow system is incorrectly configured.. It appears on 3 Chaffoteaux models in our database.
Technical description: I) Insufficient gas flow; II) Water governenor sticking; III) Incorrect venturi; IV) No venturi fitted
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 LOW WATER TEMPERATURE fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Chaffoteaux LOW WATER TEMPERATURE 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 7 July 2026