BoilerFaultCodesIdeal F 2 Fault Code
Also written as F2 — same fault.
The Ideal F 2 fault code means: your boiler has lost its gas supply or cannot detect a flame, meaning it cannot stay alight to provide heating or hot water.. It appears on 1 Ideal model in our database.
Technical description: Flame Loss. Check other gas appliances in the house are working to confirm a supply is present in the property. If other appliances do not work or there are no other appliances, check the gas supply is on at the meter and/or pre payment meter has credit.
DIY fix possible
Check if other gas appliances in your home, like a hob, are working correctly.Verify that your gas emergency control valve is in the 'on' position.Check your gas meter to ensure you have credit if you use a top-up or pre-payment system.Reset the boiler by pressing the reset button to see if it clears a temporary glitch.
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Ideal models that show the F 2 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ideal F 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 7 July 2026