E04
Grizzl-E
Input Voltage Out of Range / Line Voltage Error
Charger will not power up; no LEDs or only a brief flash followed by error indication; breaker is ON
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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 supply voltage (e.g., 120 V on a 240 V Grizzl‑E), Loose line or neutral connection at terminal block, Miswired two‑pole breaker, Internal power supply failure on control board
How to Fix / Troubleshooting
Safety: Only a qualified person should work inside the service panel. Turn OFF the main breaker before removing panel covers.
- Verify breaker type: Confirm that the Grizzl‑E is connected to a 2‑pole breaker of the correct amperage (e.g., 40 A or 50 A) providing 240 V between the two hot legs.
- Measure supply voltage: With a multimeter and proper PPE, measure voltage at the Grizzl‑E input terminals (L1–L2). It should be within the specified range (typically 208–240 V AC). If voltage is low or missing on one leg, correct the wiring or replace the breaker.
- Check terminal block: With power OFF, tighten all terminal screws on the Grizzl‑E input block. Look for discoloration or melted insulation indicating overheating.
- Power cycle: After corrections, turn the breaker OFF for 30 seconds, then ON, and observe the LED sequence.
- If voltage is correct but error remains: The internal low‑voltage power supply on the main control board may be damaged and the board will need replacement.
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Repair Difficulty
Hard
4/5
Required Part
Input Terminal Block
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