E023
EVBox
DC Residual Current Detection Fault
Charger shows E023; app indicates DC leakage detection error; charging disabled.
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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
Failed DC leakage sensor, Loose sensor harness, Calibration drift of DC RCD module, Shorted sensor core due to mechanical damage
How to Fix / Troubleshooting
Critical safety: DC leakage detection is required for safe operation. Do not bypass or disable this function.
- Power off: Switch off the breaker before opening the charger.
- Locate DC sensor: Find the DC residual current sensor (often a toroidal core around the conductors) and inspect for cracks or physical damage.
- Check connections: Ensure the sensor's signal cable is firmly connected to the main board and not pinched.
- Clean around sensor: Remove any debris or metal filings near the sensor that could affect readings.
- Replace sensor/module: If E023 persists, replace the DC RCD sensor or module as per EVBox service documentation.
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Repair Difficulty
Professional Required
5/5
Required Part
EVBox DC Residual Current Sensor
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