E14
Remeha
Ionisation current too low / flame detection error
Furnace shows E14, no burner operation
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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 or misaligned ionisation electrode, Poor earth (ground) connection, Incorrect gas/air ratio, Faulty main control PCB flame circuit
How to Fix / Troubleshooting
Safety first: Turn off gas and power. Combustion components must be serviced by qualified personnel.
- Clean ionisation electrode: Remove the electrode and gently clean the metal rod with fine abrasive pad. Avoid damaging the ceramic insulator.
- Check position: Refit the electrode ensuring it is correctly positioned in the burner flame as per Remeha service instructions.
- Verify earth connection: Ensure the furnace has a solid earth connection at the mains terminal block and that the burner assembly is properly bonded.
- Combustion check: A technician should check CO₂/O₂ levels and adjust gas/air ratio if necessary.
- PCB replacement: If ionisation current remains low with correct combustion and a new electrode, the main PCB flame detection circuit may be faulty and require replacement.
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Repair Difficulty
Professional Required
5/5
Required Part
Ionisation Electrode
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