What does the Viessmann Vitodens 200-W F30 fault code mean?
The F30 fault code on the Viessmann Vitodens 200-W indicates a malfunction with the temperature sensor, which is crucial for monitoring and regulating the boiler’s temperature. This issue can lead to inefficient heating or complete shutdown of the system.
Common Causes
- Faulty Temperature Sensor: The sensor may be damaged or malfunctioning, leading to incorrect temperature readings.
- Wiring Issues: Damaged or loose wiring connections to the temperature sensor can cause communication failures between the sensor and the boiler control unit.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as it involves electrical components and safety risks. Attempting to fix it without proper training could lead to further damage or safety hazards.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing a faulty temperature sensor on a Viessmann Vitodens 200-W is around £150 to £250. This includes the cost of the part and labour, as the sensor itself typically costs between £50 and £100.