What does the Ideal Logic Max F86 fault code mean?
The F86 fault code indicates a calibration fault with the central heating (CH) flow switch in the Ideal Logic Max boiler. This typically means that the boiler is unable to accurately detect the flow of water, which can affect heating performance.
Common Causes
- Faulty Flow Switch: The flow switch may be defective or damaged, preventing it from functioning correctly.
- Blocked Pipework: Obstructions in the pipework can impede water flow, leading to inaccurate readings by the flow switch.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer to diagnose and repair this issue, as it involves gas and electrical components that can be dangerous if handled improperly.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for the F86 fault code is around £150 to £250, primarily for the replacement of the flow switch and associated labour costs. This estimate reflects the specific parts and expertise required for this type of repair.