Neon 2 Low

Ideal Neon 2 Fault Code

Also written as NEON2 — same fault.

The Ideal Neon 2 fault code means: your boiler is correctly receiving a signal to turn on and provide heating, which is a normal indicator of operation and not typically a fault on this specific model.. It appears on 3 Ideal models 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: Boiler thermostat calling for heat.
Typical repair cost £0-120 (including labour)

DIY fix possible

Check that your room thermostat is turned up to a temperature higher than the current room temperatureEnsure the timer or programmer is set to 'On' or 'Auto'If the boiler doesn't fire despite the light being on, try resetting the boiler using the control knob

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Ideal models that show the Neon 2 fault code

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

Source

Ideal Neon 2 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