Emergency
78 on Alpha E-Tec Plus 24

Your boiler has detected an issue with the internal component that manages the gas supply, meaning it has safely switched itself off to prevent unsafe operation.

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

Anomaly on the gas valve control - An anomaly on the gas valve control is detected

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

E78View →

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