Low
Blue light on on Worcester Bosch Greenstar i Junior

Your boiler is working perfectly, and the blue light simply indicates that it is currently powered on and ready to provide heating or hot water.

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

Boiler is operational and firing.

From this model's manual
Verified against the Installation And Servicing Instructions For Greenstar I Junior Manufactured Aug 08 July 09 1 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.

DIY fix possible

No action is required as the boiler is operating normally.

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