What does the Baxi Megaflo E480 fault code mean?
The E480 fault code on a Baxi Megaflo indicates a problem with the central heating (CH) supply temperature, which may suggest that the system is not reaching the desired temperature or that there is a fault in the temperature sensor or control system.
Common Causes
- Faulty Temperature Sensor: The temperature sensor may be malfunctioning, leading to incorrect readings and triggering the fault code.
- Blocked Heat Exchanger: A blockage in the heat exchanger can prevent proper heat transfer, causing the supply temperature to remain low.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for any issues related to gas or electrical components. However, you can check the pressure gauge and ensure it is within the recommended range, and reset the boiler if necessary.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the E480 fault could be around £150 to £250, primarily depending on whether the temperature sensor needs replacement or if the heat exchanger requires cleaning or servicing.