Kospel Overcurrent or Earth Leakage Trip

Heater trips the circuit breaker or RCD/ELCB 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 heating element, Incorrect wiring or phase connection, Damaged internal wiring touching chassis, Undersized breaker for Kospel heater rating

How to Fix / Troubleshooting

Safety: Repeated tripping indicates a serious fault. Turn off power and do not reset repeatedly without inspection.

  • 1. Verify breaker rating: Ensure the breaker and wiring are sized according to the heater’s nameplate and Kospel installation manual.
  • 2. Inspect wiring: Open the heater and look for burned or pinched wires, especially near the heating elements and terminal block.
  • 3. Test elements: With power off, measure resistance between each element terminal and earth. Replace any element with low insulation resistance.
  • 4. Check connections: Confirm that phases and neutral (if used) are correctly connected as per the wiring diagram.
  • 5. RCD sensitivity: If only the RCD trips and elements test good, consult an electrician to verify RCD type and installation.
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Repair Difficulty

Hard 4/5

Required Part

Heating Element Assembly / Internal Wiring
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