What does the Ideal Logic Max F59 fault code mean?
The F59 fault code on the Ideal Logic Max indicates that the domestic hot water (DHW) flow switch is closed, which prevents the boiler from operating correctly in hot water mode. This can lead to issues with hot water supply and may require attention to restore normal function.
Common Causes
- Blocked Flow Switch: Debris or limescale buildup can obstruct the flow switch, causing it to remain closed.
- Faulty Flow Switch: The flow switch itself may be malfunctioning or damaged, leading to incorrect readings and the F59 fault code.
Can I fix it myself? (DIY)
It is advisable to call a Gas Safe Engineer to diagnose and repair 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 an F59 fault on an Ideal Logic Max is approximately £150 to £250, depending on whether the flow switch needs cleaning or replacement. This cost reflects the typical price for parts and labour in the UK.