What does the Baxi EcoBlue E133 fault code mean?
The E133 fault code on a Baxi EcoBlue boiler indicates that the appliance has failed to detect a flame during operation. This can prevent the boiler from heating water and providing hot water or central heating.
Common Causes
- Flame Sensor Issue: The flame sensor may be dirty or faulty, preventing it from detecting the flame correctly.
- Gas Supply Problem: There may be an issue with the gas supply, such as a blockage or low pressure, which can prevent the burner from igniting.
Can I fix it myself? (DIY)
It is recommended to call a Gas Safe Engineer for any gas or electrical issues. Attempting to fix these problems without proper training can be dangerous.
Estimated Repair Cost (2026 UK Prices)
The estimated repair cost for resolving the E133 fault could range from £100 to £250, depending on whether the flame sensor needs cleaning or replacement, or if there are gas supply issues that require more extensive work.