What does the Baxi Megaflo E720 fault code mean?
The E720 fault code on a Baxi Megaflo indicates a central heating (CH) system update fault. This typically suggests that the boiler’s software or communication with the heating system has encountered an issue that prevents normal operation.
Common Causes
- Software Glitch: A temporary malfunction in the boiler’s software may cause the system to fail to update properly.
- Wiring Issues: Damaged or loose wiring connections between the boiler and the heating system can disrupt communication, leading to this fault code.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as it may involve complex electrical or software components that require professional expertise. Attempting to fix it yourself could pose safety risks.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the E720 fault could be around £150 to £250, primarily for diagnostic services and potential software updates or wiring repairs, depending on the specific issue identified by the engineer.