Low
Light on on Worcester Bosch Greenstar 30i

Your boiler is operating normally and is currently heating your home or water exactly as requested.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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

Heating demand on boiler is OK

Shared across the range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Check your thermostat settings if you feel the house is too warmTurn down your radiators if specific rooms are overheatingNo action is required as this indicates normal operation

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