E13
FLO
Internal Energy Meter Communication or Calibration Fault
Charger shows E13 / ‘Meter Error’ or ‘Energy Measurement Fault’; charging may be disabled or unmetered.
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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 internal kWh meter module, Loose meter communication harness, Firmware mismatch between meter and main board, Power surge damaging metering IC
How to Fix / Troubleshooting
Safety first: Turn OFF the breaker before opening the charger. Metering circuits are tied to high voltage.
- Power-cycle: Turn OFF power for 5 minutes, then restore and check if E13 clears.
- Check app readings: Compare energy readings in the FLO app with your utility meter over a short period to see if the meter is functioning.
- Technician inspection: A technician should verify that the internal energy meter module and its communication cable to the main board are secure and undamaged.
- Firmware alignment: Ensure the charger firmware is up to date; some models require specific firmware versions for the meter module.
- If E13 persists: Replace the internal energy meter module or, if integrated, the main control board.
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Repair Difficulty
Hard
4/5
Required Part
Internal Energy Meter Module
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