What does the Viessmann Vitodens 200-W F52 fault code mean?
The F52 fault code on the Viessmann Vitodens 200-W indicates a malfunction with the air pressure switch, which is responsible for monitoring the airflow within the boiler. This issue can prevent the boiler from operating safely and efficiently.
Common Causes
- Blocked Flue: A blockage in the flue system can restrict airflow, causing the air pressure switch to fail.
- Faulty Air Pressure Switch: The switch itself may be defective or worn out, leading to incorrect readings and triggering the fault code.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer to diagnose and repair this issue, as it involves gas and electrical components that can be dangerous if handled improperly.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the F52 fault code is around £150 to £250, primarily due to the need for a qualified engineer to replace the air pressure switch and ensure safe operation.