How much does it cost to fix Ideal error code L2?

Typical repair cost for the Ideal L2 fault is £100-350 including labour.

L2 High

Ideal L2 Fault Code

Q: What does the Ideal L2 fault code mean?

Your boiler has stopped working because it cannot light a flame, which is often caused by a lack of gas supply or a blocked pipe.

The Ideal L2 fault code means: your boiler has stopped working because it cannot light a flame, which is often caused by a lack of gas supply or a blocked pipe.. It appears on 19 Ideal models in our database.

Technical description: Ignition Lockout

What causes the Ideal L2 fault?

This fault occurs when the boiler tries to light itself several times but fails to detect a flame, causing the system to shut down for safety. The most common reasons are a lack of gas reaching the unit, a blocked pipe that carries away waste water, or a dirty internal component that can no longer create a spark. It can also happen after a temporary disruption to your local gas supply or if the meter has run out of credit.

This fault is much more common during freezing winter temperatures, as the external condensate pipe can freeze solid and prevent the boiler from lighting.

Typical repair cost £100-350 (including labour)

DIY fix possible

Check if your gas meter has credit and that the gas emergency control valve is open.If it is freezing outside, check if your white condensate pipe is frozen and thaw it with warm water.Press the 'Restart' button on the boiler display to try again.

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Ideal models that show the L2 fault code

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

Source

Ideal L2 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