What does the Worcester Bosch Greenstar Ri F35 fault code mean?
The F35 fault code indicates an issue with the gas valve wiring in the Worcester Bosch Greenstar Ri boiler. This can prevent the boiler from operating correctly, leading to heating and hot water supply issues.
Common Causes
- Wiring Damage: Physical damage to the gas valve wiring can disrupt the electrical signals needed for proper operation.
- Loose Connections: Loose or corroded connections in the wiring can cause intermittent faults, leading to the F35 code being triggered.
Can I fix it myself? (DIY)
It is strongly advised to call a Gas Safe Engineer for any gas or electrical issues, including those related to the gas valve wiring. Attempting to fix it yourself can be dangerous and may void your warranty.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the F35 fault code is around £150 to £250. This includes the cost of inspecting and potentially replacing the gas valve wiring, which is a critical component of the boiler’s operation.