E10
Baxi
Fan / Combustion Air Fault
Display shows E10, unit may not start or may shut down intermittently.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Faulty combustion fan on Baxi flue system, Fan seized or obstructed, Loose fan connector, Control PCB fan drive failure
How to Fix / Troubleshooting
Safety: Isolate power before accessing the fan. Do not run the heater with covers removed.
Steps:
- Listen for fan operation: On a call for hot water, you should hear the fan start before ignition. If it is silent, suspect a fan or PCB issue.
- Inspect fan: With power off, remove the cover and locate the fan. Check for debris, broken blades, or signs of overheating. Try rotating the fan impeller gently by hand; it should spin freely.
- Check wiring: Ensure the fan connector is fully seated on both the fan and PCB.
Professional: Fan replacement and PCB diagnostics should be carried out by a qualified technician, as they affect combustion safety.
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Repair Difficulty
Hard
4/5
Required Part
Combustion Fan Assembly
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