Heidelberg
Nuisance Tripping / Leakage Current Exceeding Upstream RCD
Charger trips the upstream RCD/RCBO as soon as charging starts, but the charger itself shows no specific error code.
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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
Use of Type A RCD without DC‑sensitive protection, Combined leakage from multiple devices on same RCD, Slight insulation degradation in tethered cable, Moisture in charger or socket
How to Fix / Troubleshooting
Safety first: Repeated RCD tripping indicates possible leakage. Do not bypass RCD protection. Have a qualified electrician investigate.
- 1. Visual inspection:
- Check the charger, cable, and socket for visible damage or moisture.
- 2. Dry the unit:
- If moisture is suspected, isolate power, open the housing, and allow it to dry completely.
- 3. Dedicated circuit:
- Ensure the Heidelberg charger is on its own dedicated circuit with the correct type of RCD (e.g., Type A with integrated DC detection in the charger, or Type B as per local code).
- 4. Insulation testing (electrician):
- Have an electrician perform insulation resistance tests on the charger circuit and tethered cable.
- 5. Replace suspect parts:
- If leakage is traced to the cable or internal wiring, replace the tethered cable assembly or repair internal wiring as needed.
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Repair Difficulty
Hard
4/5
Required Part
Tethered Charging Cable
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