BoilerFaultCodesTechnical description
Subsequent display screens would direct attention to the spark generator if HT generator ceases to function
What causes this fault?
This fault occurs when the internal electronic component responsible for creating a high-voltage pulse fails to deliver power to the burner. The most common reasons are the electronic spark box burning out internally or the ignition electrodes becoming worn and soot-covered over time. Without this electrical arc, the gas won't ignite, and the boiler shuts down 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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