How to fix Ideal Logic Max fault code F69

What does the Ideal Logic Max F69 fault code mean?

The F69 fault code indicates a calibration error with the domestic hot water (DHW) flow switch in the Ideal Logic Max boiler. This error typically suggests that the flow switch is not detecting water flow correctly, which can affect the boiler’s ability to provide hot water.

Common Causes

  • Faulty Flow Switch: The flow switch may be malfunctioning or damaged, preventing accurate readings of water flow.
  • Blocked Water Path: A blockage in the water supply line or within the boiler can restrict flow, leading to calibration errors.

Can I fix it myself? (DIY)

It is recommended to call a Gas Safe Engineer for this issue, as working with gas appliances can be dangerous. Attempting to fix electrical or gas-related problems without proper training can lead to serious safety risks.

Estimated Repair Cost (2026 UK Prices)

The estimated repair cost for resolving the F69 fault code is around £150 to £250. This includes the cost of a new flow switch and labour for installation, as flow switch replacement typically requires professional expertise.