What does the Ideal Mini F25 fault code mean?
The F25 fault code on the Ideal Mini boiler indicates an ignition failure, meaning the boiler is unable to ignite the gas to start the heating process. This can lead to a lack of hot water and heating in the property.
Common Causes
- Blocked Flue: A blockage in the flue can prevent proper ventilation, causing ignition issues.
- Faulty Ignition Electrode: If the ignition electrode is damaged or dirty, it may not create the spark needed 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 resolving an F25 fault could be around £150 to £250, depending on whether the ignition electrode needs replacement or if the flue requires clearing.