What does the Viessmann Vitodens 111-W F76 fault code mean?
The F76 fault code on the Viessmann Vitodens 111-W indicates a problem with the domestic hot water (DHW) setpoint, which may prevent the boiler from heating water to the desired temperature. This issue can arise from incorrect settings or sensor malfunctions.
Common Causes
- Incorrect DHW Setpoint: The temperature setting for the domestic hot water may be incorrectly configured, leading to the fault code.
- Faulty Temperature Sensor: A malfunctioning temperature sensor can provide inaccurate readings, causing the boiler to fail in achieving the correct DHW temperature.
Can I fix it myself? (DIY)
While you can check and adjust the DHW setpoint through the boiler’s control panel, it is strongly recommended to call a Gas Safe Engineer for any issues related to sensors or electrical components to ensure safety and compliance with regulations.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the F76 fault code could be around £150 to £250, primarily depending on whether a temperature sensor replacement is needed, as these parts typically range from £50 to £100, plus labour costs.