What does the Glow-worm Flexicom F73 fault code mean?
The F73 fault code on the Glow-worm Flexicom indicates an issue with the energy-saving mode of the boiler. This typically suggests that the boiler is unable to operate in its intended energy-efficient state, which may affect its performance and efficiency.
Common Causes
- Faulty PCB: A malfunctioning printed circuit board can disrupt the energy-saving mode functionality.
- Sensor Issues: Problems with temperature or pressure sensors may prevent the boiler from correctly entering energy-saving mode.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as it involves electrical components and gas safety. Attempting to fix it yourself could pose safety risks.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for the F73 fault could be around £150 to £250, primarily due to potential PCB replacement or sensor repairs, which are labour-intensive and require specialist knowledge.