High
04 on Alpha E-Tec R

Your boiler has lost the secure electrical connection required to tell the gas supply when to turn on, meaning it cannot ignite to provide heat or hot water.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

Gas valve electrical connection fault - Gas valve wiring circuit fault detected

Engineer required

This is a high 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

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