Dishwasher frequently trips the household circuit breaker or RCD when starting or during heating.
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.
Possible Causes
How to Fix / Troubleshooting
Safety first: This fault involves electrical safety risks. Disconnect power at the breaker and do not repeatedly reset a tripping breaker without investigation.
- Step 1 – Visual inspection:
- Pull out the dishwasher and inspect the base for signs of water leaks.
- Check the mains cable for cuts or crushed sections.
- Step 2 – Heater and pump area:
- Remove the base cover and inspect the heater/heat pump assembly for signs of burning or water ingress.
- Step 3 – Professional testing:
- Insulation resistance testing of the heater and wiring should be performed by a qualified technician.
- Step 4 – Repair:
- Replace any component found to be shorted or leaking to earth (commonly the heater or pump).
Because of the risk of electric shock and fire, this type of fault is best handled by a professional.
Repair Difficulty
Required Part
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