Chaffoteaux LOW WATER TEMPERATURE Fault Code
Also written as LOWWATERTEMPERATURE — same fault.
The Chaffoteaux LOW WATER TEMPERATURE fault code means: your boiler is not heating the water effectively because it is having trouble regulating the flow of gas or detecting the water movement required to trigger the heating process.. It appears on 4 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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Gas Safe Register →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 27 April 2026