E13
Hager
Internal Energy Meter / Current Sensor Fault
Charger shows E13; app may indicate ‘meter error’ or ‘energy measurement fault’. Charging may be disabled or limited.
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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
Defective internal energy meter module, Loose CT (current transformer) connections, Calibration data corruption in meter, Communication failure between meter and main board
How to Fix / Troubleshooting
Safety first: Energy metering circuits are connected to live conductors. Only qualified electricians should access internal components.
Steps to try:
- Reboot the charger: Turn OFF the EV charger breaker for 1 minute, then ON. Check if E13 clears.
- Check app configuration: Ensure any external meter or load management settings in the Hager app are correctly configured and that the correct meter type is selected.
- Technician diagnostics: A technician should open the charger, verify CT wiring and orientation, check the meter module’s status LEDs (if present), and reseat connectors.
- Replace meter module: If the internal meter is unresponsive or out of calibration, replace the meter or CT assembly with a Hager‑approved part and reconfigure via the installer interface.
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Repair Difficulty
Hard
4/5
Required Part
Internal Energy Meter / CT Assembly
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