Emergency
FA 364 on Worcester Bosch Greenstar CDi Compact

Your boiler has detected a potential issue with the internal gas valve, which prevents it from starting to ensure your home remains safe.

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 EV2 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.

Find a Gas Safe engineer
Search the official register →

Related fault codes

EA 227View →

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