What does the Vaillant Home F61 fault code mean?
The F61 fault code on a Vaillant Home boiler indicates a system flue gas fault, which typically means that the boiler is unable to properly vent exhaust gases. This can lead to safety concerns and requires immediate attention.
Common Causes
- Blocked Flue: A blockage in the flue system can prevent exhaust gases from escaping, triggering the fault code.
- Flue Sensor Issue: A malfunctioning flue gas sensor may incorrectly detect a problem, causing the boiler to shut down for safety.
Can I fix it myself? (DIY)
It is highly recommended to call a Gas Safe Engineer for 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 an F61 fault could be around £150 to £300, depending on whether the issue is a simple blockage or requires replacement of the flue sensor.