Panasonic
Short Circuit / Ground Fault in Heater Circuit
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 main heating element, Damaged power cord, Moisture inside base, Shorted component on main PCB
How to Fix / Troubleshooting
Safety first: Do not repeatedly reset the breaker. Unplug the cooker immediately. This fault involves mains voltage and risk of electric shock.
- Visual inspection: Remove the bottom cover and look for burnt components, melted insulation, or signs of water ingress.
- Check cord: Inspect the power cord and strain relief. Replace if damaged.
- Test heater to ground: With a multimeter, check resistance between heater terminals and chassis ground. A low reading indicates a shorted heater. Replace the main heater plate assembly.
- Dry moisture: If moisture is present, dry thoroughly and allow 24 hours before retesting. Identify and fix the source of the leak.
- PCB replacement: If the heater is fine but the breaker still trips, the main control PCB may be shorted and should be replaced by a technician.
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Repair Difficulty
Professional Required
5/5
Required Part
Main heater plate assembly
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