Bosch Electrical Short / Earth Leakage

Washer trips the household circuit breaker or RCD during 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

Heater shorted to ground, Damaged power cord, Water leak onto electrical components, Faulty motor insulation

How to Fix / Troubleshooting

Safety first: Do not repeatedly reset the breaker. Unplug the washer and leave it disconnected until the fault is found.

  • Inspect for leaks: Check inside the machine for signs of water around the heater, pump, or hoses.
  • Test heater to earth: With a multimeter, measure resistance between each heater terminal and chassis. Any low resistance indicates a ground fault; replace the heater.
  • Check cord and filter: Inspect the power cord and mains filter for damage or burning.
  • Professional testing: If the cause is not obvious, have insulation resistance tests performed by a qualified technician.
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Repair Difficulty

Professional Required 5/5

Required Part

Heating Element
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