What does the Ideal Logic Plus F85 fault code mean?
The F85 fault code on the Ideal Logic Plus indicates a problem with the energy regulation system, which may affect the boiler’s efficiency and performance. This issue typically arises from a malfunction in the boiler’s control system or sensors.
Common Causes
- Faulty Sensor: A malfunctioning temperature or pressure sensor can lead to incorrect readings, triggering the F85 fault code.
- Control Board Issue: Problems with the boiler’s control board can disrupt the energy regulation process, causing the fault code to appear.
Can I fix it myself? (DIY)
It is not advisable to attempt repairs for the F85 fault code yourself, as it may involve complex electrical or gas components. It is recommended to call a qualified Gas Safe Engineer to diagnose and resolve the issue safely.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the F85 fault code is around £150 to £250, primarily depending on whether a sensor replacement or control board repair is needed. This cost reflects the complexity of the issue and the need for professional expertise.