What does the Vaillant Home F28 fault code mean?
The F28 fault code on a Vaillant Home boiler indicates a failure to ignite, which can prevent the boiler from heating water or providing central heating. This issue is often related to problems with the gas supply or ignition components.
Common Causes
- Gas Supply Issue: There may be a blockage or interruption in the gas supply, preventing the boiler from igniting.
- Ignition Electrode Fault: A faulty ignition electrode can fail to create the spark needed to ignite the gas.
Can I fix it myself? (DIY)
It is recommended to check the gas supply and ensure that the gas valve is open. However, due to the potential dangers associated with gas appliances, it is strongly advised to call a Gas Safe Engineer for any repairs or inspections.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving an F28 fault could range from £150 to £300, depending on whether the issue is a simple gas supply blockage or requires replacement of the ignition electrode, which can be more expensive.