Grizzl-E
Reduced Charging Current / Derating
Charging is very slow compared to expected rate; no error codes on Grizzl‑E or vehicle
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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
Grizzl‑E DIP switches set to lower current, Vehicle limiting current due to battery temperature, Undersized or long supply wiring causing voltage drop, Overtemperature derating inside charger
How to Fix / Troubleshooting
Safety: Turn OFF power before opening the charger.
- Check current setting: Verify the DIP switch configuration inside the Grizzl‑E matches the desired maximum current and breaker size.
- Monitor LED indicators: Some Grizzl‑E models indicate derating due to temperature; ensure the unit is not overheating (see ventilation and ambient temperature).
- Measure voltage under load: With a meter and proper PPE, measure line voltage at the charger while charging. Significant drop from nominal indicates undersized wiring or long runs.
- Vehicle settings: Check the vehicle's charging settings; some EVs allow limiting current from the in‑car menu.
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Repair Difficulty
Medium
3/5
Required Part
Internal Current Setting (DIP Switch Assembly)
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