High
LOW WATER TEMPERATURE on Chaffoteaux Britony II 40FF

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.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

What the manual says

Manufacturer manual

I) Insufficient gas flow; II) Water governenor sticking; III) Incorrect venturi; IV) No venturi fitted

From this model's manual
Verified against the Chaffoteaux Britony Ii 30ff installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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