What does the Worcester Bosch Greenstar Ri F25 fault code mean?
The F25 fault code indicates a failure to ignite the boiler, which can prevent it from heating water or providing central heating. This issue can arise from various factors, including problems with the ignition components or gas supply.
Common Causes
- Faulty Ignition Electrode: If the ignition electrode is damaged or dirty, it may not create a spark to ignite the gas.
- Gas Supply Issues: Insufficient gas pressure or a blockage in the gas supply line can prevent the boiler from igniting.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for any gas-related issues, as working with gas appliances can be dangerous. However, you can check the boiler pressure and reset the boiler if it has dropped below the recommended level.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for the F25 fault could range from £150 to £300, depending on whether the ignition electrode needs replacing or if there are gas supply issues that require more extensive work.