What does the Baxi Megaflo E780 fault code mean?
The E780 fault code on a Baxi Megaflo indicates an operational fault within the central heating (CH) system. This can affect the boiler’s ability to heat water effectively and may require troubleshooting to identify the underlying issue.
Common Causes
- Low Water Pressure: Insufficient water pressure in the system can lead to operational faults, preventing the boiler from functioning correctly.
- Faulty Pump: A malfunctioning circulation pump may hinder the flow of water, causing the heating system to fail.
Can I fix it myself? (DIY)
If you suspect low water pressure, you can check the pressure gauge and top up the system if necessary. However, for issues related to the pump or any gas/electrical components, it is crucial to call a Gas Safe Engineer to ensure safety and compliance with regulations.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the E780 fault could range from £150 to £300, depending on whether the issue is low water pressure or a faulty pump that needs replacement. The cost reflects the need for professional service and potential parts replacement.