BoilerFaultCodesZanussi F2 Fault Code
The Zanussi F2 fault code means: your boiler is failing to stay lit or cannot detect its own flame, meaning it has shut down for safety and will not provide heating or hot water.. It appears on 1 Zanussi model in our database.
Technical description: Flame Loss
What causes the Zanussi F2 fault?
This fault occurs when the boiler's control system can no longer detect the flame required to heat your water, causing it to shut down for safety. The most common reasons include a buildup of carbon on the sensing probe, a skip in the gas supply, or an internal component failing to provide a consistent spark.
This fault can be more frequent during the first cold snap of winter, as internal components that have been idle over summer may struggle to operate correctly under increased demand.
DIY fix possible
Check if other gas appliances, like a hob, are working to ensure gas supply is activeIf it is freezing outside, check if the white plastic condensate pipe leading outdoors is frozen and thaw it with warm waterPress the 'Restart' button on the front control panel to reset the boiler
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Zanussi models that show the F2 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Zanussi F2 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