What does the Viessmann Vitodens 100-W F60 fault code mean?
The F60 fault code on the Viessmann Vitodens 100-W indicates a problem with the system pressure, which may be too low or too high for the boiler to operate safely and efficiently. This can lead to inadequate heating or potential damage to the system if not addressed promptly.
Common Causes
- Low System Pressure: This can occur due to leaks in the heating system or insufficient water in the system.
- High System Pressure: This may be caused by a faulty pressure relief valve or expansion vessel issues.
Can I fix it myself? (DIY)
If the system pressure is low, you can attempt to re-pressurise the system by using the filling loop, following the manufacturer’s instructions. However, if you suspect a leak or if the pressure is too high, it is essential to call a Gas Safe Engineer to avoid any safety risks.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the F60 fault could range from £150 to £300, depending on whether it requires a simple re-pressurisation or more extensive repairs such as replacing a pressure relief valve or fixing leaks.