Emergency
Fb 365 on Worcester Bosch Greenstar CDi Compact

Your boiler has detected an issue with the internal gas valve and has safely shut itself down to prevent any potential risks.

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.

Technical description

Gas valve EV1 leak test failed Reset button Gas valve leak.

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

EAView →F0View →

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