Emergency
2916 on Worcester Bosch Greenstar 27CDi

Your boiler has detected a potential issue with the gas flow control system after it has finished running, which may indicate a safety concern.

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

Gas valve was detected to be open during post purge

From this model's manual
Verified against the Worcester Bosch Greenstar 27cdi installation & service manual, page 85.
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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Related fault codes

2915View →2917View →

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