E15
Chaffoteaux
Low Flame Ionization Signal
E15 error, unit may not start or may shut down during operation; sometimes linked to ionization current.
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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
Dirty burner, Misaligned flame electrode, Poor earth connection, Incorrect gas/air ratio
How to Fix / Troubleshooting
Safety: Isolate gas and power before opening the combustion chamber.
- Clean burner: Remove the burner and clean thoroughly with a soft brush and vacuum. Ensure all ports are clear.
- Check flame electrode position: Adjust the electrode so that it is correctly immersed in the burner flame as per the service manual. Tighten mounting screws.
- Verify earth continuity: Check that the appliance is properly earthed and that the earth wire from the burner/ionization circuit is secure.
- Combustion check: If low ionization persists, a professional should perform a combustion analysis and adjust gas valve settings if necessary.
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Repair Difficulty
Professional Required
5/5
Required Part
Flame Ionization Electrode
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