neon I 1 Low

Ideal neon I 1 Fault Code

Also written as NEONI1 — same fault.

The Ideal neon I 1 fault code means: your boiler is operating exactly as it should and is currently burning gas to provide heat or hot water.. It appears on 1 Ideal model in our database.

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description: Burner flame established / Ignition PCB operating

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 neon I 1 fault code

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

Source

Ideal neon I 1 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