What does the Ideal Mexico HE F23 fault code mean?
The F23 fault code on the Ideal Mexico HE indicates a flame failure, meaning the boiler is unable to detect a flame when it attempts to ignite. This can lead to the boiler shutting down for safety reasons.
Common Causes
- Blocked Flue: A blockage in the flue can prevent proper ventilation, leading to flame failure.
- Faulty Ignition Electrode: If the ignition electrode is damaged or malfunctioning, it may not create a spark to ignite the gas.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for any gas or electrical issues. However, you can check the boiler pressure and reset the boiler if it is low or has tripped.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the F23 fault could be around £150 to £250, primarily depending on whether the ignition electrode needs replacement or if a flue blockage requires clearing.