BoilerFaultCodesTechnical description
Gas valve relay error
What causes this fault?
This fault occurs when the boiler's main control board detects a communication failure or a physical defect in the relay that triggers the gas valve. Effectively, the brain of the boiler can no longer safely tell the gas valve to open or close, so it shuts down as a safety precaution. The most common reason is internal wear and tear on the printed circuit board's electrical components or a fault within the gas valve's solenoid.
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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