What does the Ideal Logic Plus F99 fault code mean?
The F99 fault code on the Ideal Logic Plus indicates a faulty energy analysis, which suggests that the boiler is unable to accurately assess its energy consumption or efficiency. This can lead to improper functioning and may affect the overall performance of the heating system.
Common Causes
- Faulty Sensor: A malfunctioning sensor that measures energy usage can trigger the F99 code, leading to inaccurate readings.
- Software Glitch: An issue with the boiler’s software may cause it to misinterpret data, resulting in the F99 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 complex diagnostics and potential electrical components that should not be handled by untrained individuals.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the F99 fault code could be around £150 to £250, primarily due to the need for a qualified engineer to diagnose and potentially replace faulty sensors or update the software.