No spark at ignition electrode High

Ideal No spark at ignition electrode Fault Code

Also written as NOSPARKATIGNITIONELECTRODE — same fault.

The Ideal No spark at ignition electrode fault code means: your boiler is failing to light the gas flame, meaning your heating and hot water will not work.. 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: Check gap at electrode, integrity of electrode and lead, and PCB connections

What causes the Ideal No spark at ignition electrode fault?

This fault occurs when the boiler's control system attempts to start a flame but cannot generate the necessary spark to ignite the gas. The most common reasons are a cracked ceramic insulator on the spark plug, a loose connection in the wiring, or the internal control board failing to send power to the ignition system.

This issue is frequently seen after a long summer break when the boiler is first turned back on for autumn, as moisture or debris can settle on the electrode during periods of disuse.

Typical repair cost £120-280 (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 No spark at ignition electrode fault code

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

Source

Ideal No spark at ignition electrode 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