What does the Baxi Megaflo E220 fault code mean?
The E220 fault code on a Baxi Megaflo indicates a fault with the central heating (CH) sensor. This typically means that the sensor is either malfunctioning or has become disconnected, affecting the boiler’s ability to regulate heating properly.
Common Causes
- Faulty CH Sensor: The sensor may have failed due to wear and tear or electrical issues, leading to incorrect temperature readings.
- Wiring Issues: Damaged or loose wiring connections to the CH sensor can cause communication failures between the sensor and the boiler control board.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for this issue, as working with gas appliances can be dangerous. Attempting to fix electrical components without proper training can also pose safety risks.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for addressing the E220 fault code is around £150 to £250. This includes the cost of replacing the CH sensor and any necessary wiring repairs, which are common issues that require professional attention.