How to fix Ideal Logic Plus fault code F59

What does the Ideal Logic Plus F59 fault code mean?

The F59 fault code on the Ideal Logic Plus indicates a software issue within the boiler’s control system. This may result from a corrupted software update or internal malfunction, preventing the boiler from operating correctly.

Common Causes

  • Corrupted Software Update: An incomplete or faulty software update can lead to the F59 error, disrupting normal boiler functions.
  • Internal Control Board Failure: A malfunctioning control board may cause software errors, leading to the F59 fault code being displayed.

Can I fix it myself? (DIY)

It is recommended to call a Gas Safe Engineer for this issue, as it involves software and control board diagnostics that require professional expertise. Attempting DIY repairs could void warranties or cause further damage.

Estimated Repair Cost (2026 UK Prices)

The estimated repair cost for resolving the F59 fault code is around £150 to £300. This includes potential software reprogramming or control board replacement, which are both complex tasks requiring professional intervention.