Toshiba Short Circuit / Ground Fault

Multicooker trips the household circuit breaker or RCD when plugged in or when heating starts.

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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

Shorted heater element to chassis, Damaged mains cord insulation, Moisture inside base contacting live parts, Shorted components on main PCB

How to Fix / Troubleshooting

Safety: Do not repeatedly reset the breaker; risk of fire or shock. Unplug immediately.

  • 1. Visual inspection: Remove the bottom cover and look for obvious signs of arcing, burnt wires, or water ingress.
  • 2. Check heater insulation: With a multimeter (and cooker unplugged), measure resistance between each heater terminal and chassis. Any low resistance indicates a ground fault; replace the heater assembly.
  • 3. Inspect power cord: Replace if outer insulation is damaged or if there are signs of crushing.
  • 4. Dry moisture: If water has entered the base, dry thoroughly for at least 24 hours and inspect for corrosion before reuse.

If you are not trained to work with mains circuits, have a qualified technician perform these checks.

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Repair Difficulty

Professional Required 5/5

Required Part

Main Heater Element Assembly
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