How to fix Ideal Logic Max fault code F37

What does the Ideal Logic Max F37 fault code mean?

The F37 fault code indicates a fault with the central heating (CH) sensor in the Ideal Logic Max boiler. This sensor is responsible for monitoring the temperature of the water in the heating system, and a fault can disrupt the boiler’s operation.

Common Causes

  • Faulty CH Sensor: The sensor may be malfunctioning or damaged, leading to inaccurate temperature readings.
  • Wiring Issues: Damaged or loose wiring connections to the sensor can cause communication problems between the sensor and the boiler’s control board.

Can I fix it myself? (DIY)

It is recommended to call a Gas Safe Engineer to diagnose and repair this fault, as it involves electrical components and safety risks. Attempting to fix it yourself could lead to further damage or safety hazards.

Estimated Repair Cost (2026 UK Prices)

The estimated repair cost for the F37 fault code is around £150 to £250, which includes the replacement of the CH sensor and any necessary wiring repairs. This cost reflects the complexity of the repair and the need for a qualified technician.