Emergency
306 on Worcester Bosch Greenstar 8000 Life Regular

Your boiler has detected that a flame is still present even though it has commanded the gas to turn off, which indicates a potential safety issue with the shut-off system.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Act immediately

Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now. This fault can be dangerous if ignored.

What the manual says

Manufacturer manual

Flame signal after closing the fuel supply

Shared across the Greenstar 8000 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.

Engineer required

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

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All 107 fault codes on the Greenstar 8000 Life Regular

Seeing a different code? Every code this model can display, in one place.

1-A21-d31-d41-E11-E21-E31-E41-EA1-Eb2002012022032042082142242272282292322332342352372382422442452462472482492502512522532542572582592622632652682692732812832843573583603623636048151010101310181019102210231025103710681070107110721075107620852908291029142915291629202923292429252926292729282931294029462948294929502951295229552956295729612962296329652965 B29662966 B296829692972D4

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