BoilerFaultCodesBaxi 3 flashes green Fault Code
Also written as 3FLASHESGREEN — same fault.
The Baxi 3 flashes green fault code means: your boiler has lost its flame while it was running, which means it has stopped providing heating and hot water for safety.. It appears on 4 Baxi models in our database.
Technical description: Flame loss: No flame detected during operation
DIY fix possible
Check that your gas emergency control valve is open and you have credit on your gas meter.Verify if other gas appliances in your home, such as a hob, are working correctly.Press the reset button or turn the selector switch to 'R' for five seconds to attempt a restart.
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Baxi models that show the 3 flashes green fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Baxi 3 flashes green fault code information on this page is sourced and cross-checked against the official Baxi service / installation manuals for each affected model.
- Baxi 613 Heat manual (PDF)
- Baxi 800 Heat (range) manual (PDF)
- Baxi EcoBlue Advance Heat manual (PDF)
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026