30cxi Low

Boiler Fault Code 30cxi

Also written as 30CXI — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code 30cxi appears across 1 boiler brand and 1 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is operating normally and this code simply indicates your specific model is configured to deliver a hot water flow rate of 12.3 litres per minute. (As reported on Glow-worm Flexicom CXi)

Pick your boiler brand for the 30cxi fix

Glow-worm 30cxi 1 model

Source

Information for the 30cxi fault code is sourced from the official service / installation manual for each model that displays it. Read more about how we source fault codes →

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026