What does the Worcester Bosch Greenstar Si F32 fault code mean?
The F32 fault code on the Worcester Bosch Greenstar Si indicates a problem with the air pressure switch, which is responsible for ensuring that the boiler has adequate airflow for safe operation. This fault can prevent the boiler from igniting or operating correctly, leading to heating and hot water issues.
Common Causes
- Blocked Flue: A blockage in the flue system can restrict airflow, causing the air pressure switch to fail to operate correctly.
- Faulty Air Pressure Switch: The switch itself may be defective or have electrical issues, preventing it from accurately detecting pressure changes.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as working with gas appliances can be dangerous. Attempting to fix the air pressure switch or related components without proper training may lead to safety hazards.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for replacing a faulty air pressure switch on a Worcester Bosch Greenstar Si is around £150 to £200. This includes the cost of the part and labour, reflecting the complexity of the repair and the expertise required.