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Virginia MorganJul 26, 2025
What to do if my IDEAL he24 Boiler is not working and shows 'LLLLL ::::: FFFFF'?
- AAlex MorseJul 26, 2025
If your IDEAL Boiler displays ‘LLLLL ::::: FFFFF ’ (flashing) and attempts to fire three times without success, try these steps: First, press the reset button (C) for 2 seconds to try the ignition sequence again. Then, check your gas supply by testing another gas appliance. If there's no gas, it's not a boiler issue, so contact your gas supplier. Finally, ensure the condensate pipe isn't blocked or frozen. Clear any blockages, and if you can't, contact your installer.