Low
30cxi on Glow-worm Flexicom CXi

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.

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

What the manual says

Manufacturer manual

12.3L/min.

From this model's manual
Verified against the Glow Worm Flexicom Cxi installation & service manual, page 11.
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 fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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