Dimplex Electrical Short or Earth Leakage

Water heater trips the circuit breaker or RCD/GFCI when turned on or when hot tap is opened

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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 heating element, Water ingress into electrical compartment, Damaged internal wiring, Faulty main control PCB

How to Fix / Troubleshooting

Danger: Repeated tripping indicates a serious electrical fault. Do not repeatedly reset the breaker without investigation.

  • Visual inspection: With power off, remove the cover and look for burn marks, melted insulation, or water inside the unit.
  • Check element insulation: Use an insulation tester to check resistance between element terminals and earth. Replace the element if insulation is low.
  • Inspect wiring: Repair or replace any damaged wires or connectors.

Recommendation: If you are not trained in electrical diagnostics, contact a qualified electrician or Dimplex service agent.

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Repair Difficulty

Professional Required 5/5

Required Part

Heating Element Assembly / Internal Wiring
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