What does the Ideal Logic Max F38 fault code mean?
The F38 fault code on the Ideal Logic Max indicates a problem with the domestic hot water (DHW) flow switch. This fault typically means that the boiler is unable to detect the flow of water, which can prevent hot water from being delivered.
Common Causes
- Blocked Flow Switch: Debris or limescale buildup can obstruct the flow switch, preventing it from functioning correctly.
- Electrical Fault: Issues with the wiring or connections to the flow switch can lead to a failure in detecting water flow.
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 DIY repairs could be dangerous.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving an F38 fault is around £150 to £250. This includes the cost of a new flow switch and labour, as the flow switch itself typically costs around £50 to £100.