BoilerFaultCodesIdeal L2 Fault Code
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 39 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.
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.
- Classic Repair: £100-£350
- CLASSIC2 Repair: £150-300
- ESPRIT ECO2 Repair: £90-250
- Exclusive Repair: £100-£350
- EXCLUSIVE2 Repair: £100-£250
- GB24 / GB30 Repair: £150-300
- i Combi 2 Repair: £100-£350
- i-mini C24 / C30 Repair: £100-250
- i-mini2 C24 Repair: £100-£350
- i-mini2 C30 Repair: £100-£350
- i-mini2 C35 Repair: £100-£350
- Independent Repair: £120-250
- INDEPENDENT + COMBI Repair: £100-£350
- Independent C24 Repair: £120-250
- INDEPENDENT COMBI2 Repair: £100-250
- INDEPENDENT SYSTEM Repair: £100-£350
- Independent System S15 Repair: £100-£350
- INSTINCT2 Repair: £100-£350
- Instinct2 24 Repair: £100-£350
- Logic + System 15
- Logic + System 18
- Logic + System 24
- Logic Code Combi ES26
- Logic Code Combi ES33
- Logic Code Combi ES38
- Logic Code Combi ESP1 Repair: £100-280
- Logic Combi C24 C30 C35 Repair: £100-350
- Logic Combi ES24
- Logic Combi ES30
- Logic Combi ES35
- Logic Combi ESP1 Repair: £100-£350
- LOGIC HEAT Repair: £100-£350
- Logic Max Combi Repair: £100-280
- Logic Max Heat Repair: £150-300
- Logic Max System Repair: £100-280
- LOGIC SYSTEM Repair: £100-£350
- Logic+ Heat H Repair: £100-£350
- Mexico Repair: £100-£350
- Sprint Repair: £100-350
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.
- Ideal GB24 / GB30 manual (PDF)
- Ideal i-mini2 C35 manual (PDF)
- Ideal Independent System S15 manual (PDF)
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 31 August 2026