What does the Viessmann Vitodens 200-W F71 fault code mean?
The F71 fault code on the Viessmann Vitodens 200-W indicates a hardware fault within the boiler system. This typically suggests a malfunction in the control board or other critical components that manage the boiler’s operation.
Common Causes
- Control Board Failure: A malfunction or failure of the main control board can lead to the F71 error, disrupting communication between components.
- Sensor Issues: Faulty sensors, such as temperature or pressure sensors, may provide incorrect readings, triggering the hardware fault code.
Can I fix it myself? (DIY)
It is highly recommended to call a qualified Gas Safe Engineer to diagnose and repair the F71 fault, as it involves complex hardware issues that require professional expertise and safety precautions.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the F71 fault could range from £300 to £600, depending on whether the control board needs replacement or if other components are involved. This cost reflects the price of parts and labour for a qualified technician.