What does the Viessmann Vitodens 100-W F62 fault code mean?
The F62 fault code indicates a faulty heating demand, meaning the boiler is not receiving the correct signal to heat the water. This can lead to inadequate heating performance and requires troubleshooting to identify the underlying issue.
Common Causes
- Faulty Thermostat: If the thermostat is malfunctioning, it may not send the correct heating demand signal to the boiler.
- Wiring Issues: Damaged or loose wiring connections between the thermostat and the boiler can disrupt communication, leading to the F62 fault.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for any gas or electrical issues, as working with these systems can be dangerous. However, you can check the thermostat settings and ensure all connections are secure.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the F62 fault could range from £100 to £250, depending on whether the thermostat needs replacement or if wiring repairs are necessary.