What does the Glow-worm Flexicom F49 fault code mean?
The F49 fault code indicates that there is a problem with the system pressure in the Glow-worm Flexicom boiler. This typically means that the pressure is either too low or too high, which can affect the boiler’s operation and efficiency.
Common Causes
- Low Water Pressure: This can occur due to leaks in the system or insufficient water supply, leading to inadequate pressure for the boiler to function properly.
- High Water Pressure: This may be caused by a faulty pressure relief valve or an issue with the filling loop, resulting in excessive pressure that can trigger the fault code.
Can I fix it myself? (DIY)
You can attempt to reset the boiler and check the pressure gauge; if the pressure is below 1 bar, you may need to top it up using the filling loop. However, if you are unsure or if the problem persists, it is strongly advised to call a Gas Safe Engineer to avoid any safety risks.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the F49 fault could be around £150 to £250, depending on whether the issue is simply a pressure adjustment or if a component like the pressure relief valve needs replacement.