What it means
On Ideal's Logic Heat, Logic+ Heat and Logic Combi pages F2 is flame loss, and the separate ignition lockout code is L2. The Logic Combi2 shows it as F 02.
What to check, in order
- Check your gas credit
If your gas meter is pay-as-you-go, make sure there's credit on it.
- Try another gas appliance
If other gas appliances in your home don't work either, Ideal says to contact a local gas engineer. If you have no other gas appliances, check the gas is turned on at the meter.
- Check the yellow gas valve
It's the yellow gas isolation valve under the boiler. When it's on, the handle points in the direction of the pipe.
- In freezing weather, thaw the condensate pipe
Hold a hot water bottle or a microwavable heat pad around it, or pour tepid water over the frozen part.
- Reset the boiler
Press the restart button.
When to call a Gas Safe engineer
If it still won't light, contact Ideal quoting F2 if the boiler is under warranty, or a Gas Safe registered engineer if not. If it gurgles as it tries to light, contact your installer: Ideal says there may be a blockage.
Parts people end up buying
Only if the checks above point to a part. Match it to your model number first: it's on a label on the data badge, usually under the boiler or behind the front cover.
- Condensate pipe laggingSearch on Amazon
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Quick answers
What does the Ideal F2 fault code mean?
The boiler lost its flame or couldn't light, so it has stopped. Ideal's model pages call F2 flame loss; its general fault code list calls it flame loss / ignition lockout. On Ideal's Logic Heat, Logic+ Heat and Logic Combi pages F2 is flame loss, and the separate ignition lockout code is L2. The Logic Combi2 shows it as F 02.
Can I fix Ideal F2 myself?
Easy (about 30 minutes). Start with: check your gas credit; try another gas appliance; check the yellow gas valve. If it still won't light, contact Ideal quoting F2 if the boiler is under warranty, or a Gas Safe registered engineer if not. If it gurgles as it tries to light, contact your installer: Ideal says there may be a blockage.
Is Ideal F2 worth repairing?
Worth fixing. Gas credit, a closed valve or a frozen pipe cost nothing to sort. If it's none of those, an engineer needs to look at the ignition.
Checked against
- Ideal Heating: what does my boiler fault code mean
- Ideal Heating: Logic Combi 24, 30 and 35 troubleshooting guide
- Ideal Heating: Logic Heat troubleshooting manual
- Ideal Heating: how to defrost a frozen condensate pipe
Last reviewed October 2026. Manufacturers update their pages, and your manual is the final word. Spotted a mistake? Email contact@appliance-error-codes.com.