Spark generator fault High

Ideal Spark generator fault Fault Code

Also written as SPARKGENERATORFAULT — same fault.

The Ideal Spark generator fault fault code means: your boiler is unable to create the spark needed to light the gas burner, meaning the system cannot fire up to provide heat.. It appears on 1 Ideal model in our database.

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: Subsequent display screens would direct attention to the spark generator if HT generator ceases to function

What causes the Ideal Spark generator fault 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.

Typical repair cost £160-£300 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Ideal models that show the Spark generator fault fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Ideal Spark generator fault fault code information on this page is sourced and cross-checked against the official Ideal service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026