BoilerFaultCodesTechnical description
Gas valve connection fault
What causes this fault?
This fault occurs when the boiler's main control board loses electrical communication with the gas valve, which acts as the gateway for fuel. The most common reason is a loose or damaged wiring connection between these two parts, or a physical failure of the electronic coil within the gas valve itself. Because the boiler cannot verify that the gas can be turned off or on safely, it shuts down immediately as a safety precaution.
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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