What does the Baxi 600 Series E280 fault code mean?
The E280 fault code on the Baxi 600 Series indicates a problem with the domestic hot water (DHW) flow switch. This fault typically means that the flow switch is either stuck, faulty, or not detecting water flow correctly.
Common Causes
- Faulty Flow Switch: The flow switch may be defective or worn out, preventing it from operating correctly.
- Blocked Water Path: Debris or limescale buildup in the water path can obstruct flow, leading to incorrect readings by the flow switch.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as it involves gas and electrical components that require professional handling for safety reasons.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for fixing the E280 fault code is around £150 to £250, which includes the replacement of the flow switch and any necessary labour charges. This cost reflects the complexity of the repair and the need for a qualified technician.