E12
Tefal Internal Wiring / Ground Fault Detection

E12 is displayed and the unit will not start; sometimes occurs after the unit has been dropped or heavily bumped.

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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

Loose earth (ground) connection to chassis, Pinched wire shorting to metal housing, Cracked PCB causing trace short, Damaged power cord strain relief

How to Fix / Troubleshooting

Safety first: Unplug immediately. Do not use the appliance if you suspect internal damage or if it has been dropped.

  • External inspection: Check the power cord for cuts, kinks, or crushed sections. If damaged, the cord must be replaced.
  • Housing check: Look for cracks in the plastic body or misalignment of panels that could pinch internal wires.
  • Internal wiring (advanced):
    • Remove the outer shell carefully.
    • Inspect all wiring harnesses for insulation damage, especially where they pass through metal brackets.
    • Verify the earth wire is securely fastened to the metal chassis.
  • Do not bypass safety: Never disconnect the earth wire or insulate over a known short. Replace damaged wires or components.
  • Professional repair: Ground faults can be hazardous; if you are not experienced with electrical safety, seek professional service.
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Repair Difficulty

Professional Required 5/5

Required Part

Main Wiring Harness
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