Your boiler is failing to light automatically because the physical spark mechanism isn't reaching the pilot flame, even though the gas is present.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Spark electrode wrongly positioned. Spark from electrode not jumping to thermocouple. Electrode lead detached from Piezo igniter. Electrode lead damaged causing local short circuit. Faulty Piezo Ignitor.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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