What does the Ideal Logic Max F74 fault code mean?
The F74 fault code indicates a calibration issue with the central heating (CH) flow switch in the Ideal Logic Max boiler. This fault typically suggests that the boiler is unable to accurately detect the flow of water, which can affect heating efficiency and safety.
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 hinder water flow, leading to calibration errors in the flow switch.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer to address this issue, as it involves gas and electrical components that require professional expertise. Attempting to fix it yourself could pose safety risks.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the F74 fault is around £150 to £250. This includes the cost of a replacement flow switch and labour, as it typically requires professional installation.