High
80 on Alpha Intec2 25 28XE

Your boiler has detected an internal communication problem with the part that controls the gas supply, meaning it is unable to safely light the flame to heat your home.

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

Block - gas valve driver issue. A fault has occurred on the PCB function that controls the gas valve

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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