E24
Walli
DC Residual Current Detection Trip
Charger shows E24; app indicates 'DC leakage detected' on models with DC leakage monitoring.
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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
DC leakage from vehicle onboard charger, Faulty DC leakage sensor in Walli, Damaged output cable causing DC imbalance, Calibration drift of RCD‑DC module
How to Fix / Troubleshooting
Safety first: DC leakage is a serious safety concern. Do not bypass the protection.
Steps:
- Test with another EV: Attempt to charge a different vehicle. If E24 only occurs with one EV, the issue may be vehicle‑side and should be checked by the vehicle manufacturer.
- Inspect cable: Check the Walli cable for damage or signs of overheating that could indicate internal faults.
- Power cycle and retry: Turn off the charger for 5 minutes, then restore power and attempt a new session.
- If E24 occurs with multiple vehicles: The DC leakage sensor or RCD‑DC module inside the Walli is likely faulty. Replace the RCD‑DC module or main control board according to the service manual.
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Repair Difficulty
Professional Required
5/5
Required Part
Walli RCD‑DC module
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