What does the Baxi Megaflo E730 fault code mean?
The E730 fault code on a Baxi Megaflo indicates a domestic hot water (DHW) system reset fault. This typically means that the boiler has detected an issue that prevents it from supplying hot water, requiring a reset to restore functionality.
Common Causes
- Thermostat Malfunction: A faulty thermostat may not be accurately reading the temperature, causing the system to reset.
- Blocked Heat Exchanger: A blockage in the heat exchanger can prevent proper heat transfer, leading to a reset fault.
Can I fix it myself? (DIY)
If you are comfortable, you can attempt to reset the boiler by following the manufacturer’s instructions. However, for any gas or electrical issues, it is crucial to call a qualified Gas Safe Engineer to ensure safety and compliance with regulations.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the E730 fault could range from £150 to £300, depending on whether the thermostat needs replacing or if the heat exchanger requires cleaning or servicing. This cost reflects the typical labour and parts involved in resolving these common issues.