Chaffoteaux WATER TEMPERATURE LOW Fault Code
Also written as WATERTEMPERATURELOW — same fault.
The Chaffoteaux WATER TEMPERATURE LOW fault code means: your boiler is struggling to heat the water to the right temperature because the water is flowing through the system too quickly or the gas supply isn't strong enough.. It appears on 1 Chaffoteaux model in our database.
Technical description: i) Water rate too high ii) Insufficient gas flow iii) Water governor sticking
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 WATER TEMPERATURE LOW fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Chaffoteaux WATER TEMPERATURE LOW 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