How to fix Ideal Logic Max fault code F25

What does the Ideal Logic Max F25 fault code mean?

The F25 fault code on the Ideal Logic Max 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

  • Faulty Ignition Electrode: The ignition electrode may be damaged or dirty, preventing it from creating a spark to ignite the gas.
  • Gas Supply Issues: There could be a problem with the gas supply, such as low pressure or a blockage, which prevents gas from reaching the burner.

Can I fix it myself? (DIY)

It is recommended to call a Gas Safe Engineer for any gas or electrical issues, as attempting to fix these problems without proper training can be dangerous. However, you can check the boiler pressure and reset the boiler if it is low or has locked out.

Estimated Repair Cost (2026 UK Prices)

The estimated repair cost for resolving an F25 fault could range from £100 to £250, depending on whether the ignition electrode needs replacing or if there are gas supply issues that require further investigation.