BoilerFaultCodesZanussi L2 Fault Code
The Zanussi 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 1 Zanussi model in our database.
Technical description: Ignition Lockout
What causes the Zanussi 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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Zanussi models that show the L2 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Zanussi L2 fault code information on this page is sourced and cross-checked against the official Zanussi service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026