📋 Key Takeaways
- 1.What it means: Boiler attempted to ignite but no flame was established. Could be gas supply issue, faulty ignition electrode, or dirty burner.
- 2.What to do: Check gas supply is on and other gas appliances work. Press reset button. If fault persists after 3 resets call a Gas Safe engineer.
- 3.DIY or engineer? You can try one reset after addressing the cause. If it returns, call a Gas Safe engineer.
Fault Code F01: No flame detected
Boiler attempted to ignite but no flame was established. Could be gas supply issue, faulty ignition electrode, or dirty burner.
This fault code can often be cleared by addressing the underlying issue (e.g. repressurising) and pressing the reset button once. If the fault returns after one reset, do not keep resetting — call a Gas Safe engineer to investigate.
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