What does the Worcester Bosch Greenstar Ri F46 fault code mean?
The F46 fault code indicates a problem with the cold water inlet, which may be due to a blockage or a malfunctioning component affecting the water supply to the boiler. This issue can prevent the boiler from operating correctly, leading to heating and hot water supply problems.
Common Causes
- Blocked Cold Water Inlet Filter: Debris or sediment can accumulate in the filter, restricting water flow.
- Faulty Inlet Valve: The valve may be stuck or malfunctioning, preventing proper water supply to the boiler.
Can I fix it myself? (DIY)
While you can check for blockages in the cold water inlet filter, it is strongly advised to call a Gas Safe Engineer for any repairs or if the inlet valve is suspected to be faulty, as these issues can involve gas and electrical components.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the F46 fault code is around £150 to £250, primarily due to the potential need for part replacement, such as the inlet valve, which can be costly depending on the specific component required.