Zencar
Metering Inaccuracy
Charger shows significantly inaccurate kWh or current readings compared to other meters.
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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
Drifted calibration of internal meter, Loose CT connections, Incorrect CT orientation, Firmware bug in measurement algorithm
How to Fix / Troubleshooting
Safety first: Turn off power before touching CTs or meter wiring.
- Compare readings: Use a known-accurate meter or utility meter to compare consumption over a full charge session.
- Inspect CTs: For models with internal or external CTs, ensure they are clamped fully around the correct conductors and oriented as per arrows.
- Check connections: Verify CT leads are firmly connected to the internal kWh meter module or main board.
- Calibration/reset: If Zencar provides a calibration or reset function, follow the documented procedure.
- Persistent large errors: Replace the internal kWh meter module or main control PCB.
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Repair Difficulty
Medium
3/5
Required Part
Internal kWh Meter Module
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