E08
Grizzl-E
Output Overcurrent / Current Sensor Fault
Charger indicates error; vehicle may show ‘Overcurrent’ or ‘Charging limited’; charging stops under heavy load
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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
Incorrect current setting on DIP switches, Shorted output wiring inside unit, Failed current transformer (CT) sensor, Defective current measurement circuit on control board
How to Fix / Troubleshooting
Safety: Turn OFF power before opening the enclosure or adjusting DIP switches.
- Verify current setting: Open the Grizzl‑E cover and locate the DIP switches used to set maximum output current. Confirm they match the circuit breaker rating and installation manual.
- Inspect internal wiring: Check for any signs of insulation damage or pinched conductors between the contactor and the output cable.
- Check CT placement: Ensure the current transformer (ring‑shaped sensor around one of the output conductors) is properly seated and its wires are firmly connected to the control board.
- Test at lower current: If adjustable, temporarily set the charger to a lower current and see if charging is stable. If it is, the issue may be with the supply circuit or breaker tripping early.
- Persistent E08: If wiring and settings are correct, the CT or control board may be defective and require replacement.
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Repair Difficulty
Hard
4/5
Required Part
Current Transformer Sensor
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