What does the Baxi 600 Series E480 fault code mean?
The E480 fault code on the Baxi 600 Series indicates a problem with the domestic hot water (DHW) pressure switch. This fault typically arises when the pressure switch fails to detect the correct water pressure, preventing the boiler from operating properly.
Common Causes
- Blocked Pressure Switch: Debris or scale buildup can obstruct the pressure switch, leading to incorrect readings.
- Faulty Pressure Switch: The pressure switch itself may be malfunctioning due to wear or electrical issues, causing it to fail in detecting water pressure.
Can I fix it myself? (DIY)
It is advisable to call a Gas Safe Engineer to address this issue, as it involves gas and electrical components that can be dangerous if handled improperly. Attempting DIY repairs could void warranties or lead to safety hazards.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for fixing the E480 fault code is around £150 to £250, which includes the replacement of the pressure switch and associated labour. This cost reflects the complexity of the repair and the need for a qualified technician.