What does the Ideal Logic Max F57 fault code mean?
The F57 fault code indicates that the domestic hot water (DHW) flow switch is open, which means the boiler is not detecting water flow when it should. This can prevent the boiler from heating water for taps and showers, leading to a lack of hot water.
Common Causes
- Blocked or Dirty Flow Switch: Debris or limescale buildup can obstruct the flow switch, preventing it from operating correctly.
- Faulty Flow Switch: The flow switch itself may be malfunctioning or have failed, which would require replacement.
Can I fix it myself? (DIY)
It is advisable to call a Gas Safe Engineer for this issue, as it involves gas and electrical components that can be dangerous if not handled properly. Attempting to fix it yourself may void warranties or lead to further complications.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing a faulty flow switch on an Ideal Logic Max is around £150 to £200, including parts and labour. This cost reflects the typical price for a replacement flow switch and the expertise required for installation.