How to fix Glow-worm Energy fault code F68

What does the Glow-worm Energy F68 fault code mean?

The F68 fault code indicates a problem with the central heating (CH) temperature switch, which may be malfunctioning or not detecting the correct temperature. This can prevent the boiler from operating efficiently and may lead to heating issues in your home.

Common Causes

  • Faulty Temperature Sensor: The temperature sensor may be defective or damaged, leading to incorrect readings.
  • Wiring Issues: Damaged or loose wiring connections to the temperature switch can disrupt communication and cause the fault code to appear.

Can I fix it myself? (DIY)

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

Estimated Repair Cost (2026 UK Prices)

The estimated repair cost for resolving the F68 fault code is around £150 to £250, primarily due to the need for professional diagnosis and potential replacement of the temperature switch or wiring.