What does the Worcester Bosch Greenstar Ri F70 fault code mean?
The F70 fault code on the Worcester Bosch Greenstar Ri indicates a problem with the system pressure switch, which is responsible for monitoring the pressure within the heating system. This fault can prevent the boiler from operating correctly, leading to heating and hot water issues.
Common Causes
- Blocked Pressure Switch Tubing: Debris or blockages in the tubing connected to the pressure switch can cause incorrect pressure readings.
- Faulty Pressure Switch: The pressure switch itself may be malfunctioning or have failed, leading to erroneous signals being sent to the boiler’s control board.
Can I fix it myself? (DIY)
While some homeowners may attempt to check for blockages in the tubing, it is strongly advised to call a Gas Safe Engineer for any repairs or replacements related to the pressure switch, as these involve gas and electrical components that require professional handling.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the F70 fault code is approximately £150 to £250. This includes the cost of a new pressure switch and labour, as replacing this component typically requires professional expertise.