What does the Glow-worm Flexicom F46 fault code mean?
The F46 fault code on a Glow-worm Flexicom boiler indicates a malfunction in the diverter valve, which is responsible for directing hot water to either the heating system or the hot water taps. This issue can lead to inadequate heating or hot water supply.
Common Causes
- Blocked Diverter Valve: Debris or limescale buildup can obstruct the diverter valve’s operation, preventing it from functioning correctly.
- Electrical Fault: A failure in the electrical components or connections associated with the diverter valve can lead to improper operation or complete failure.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as it involves gas and electrical components that require professional handling for safety and compliance with regulations.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for a faulty diverter valve on a Glow-worm Flexicom is around £250 to £350, which includes parts and labour. This cost reflects the complexity of the repair and the need for a qualified engineer to ensure safe operation.