E09
Grizzl-E
Surge Protection / MOV Failure
Charger LEDs show error; unit may not power up fully; occurs after lightning storm or power surge
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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
Metal‑oxide varistor (MOV) damaged by surge, Burned surge protection components on control board, Overvoltage event on supply line, Inadequate surge protection upstream
How to Fix / Troubleshooting
Safety: Turn OFF the breaker and verify no voltage is present before opening the unit.
- Inspect for surge damage: Remove the cover and look near the input terminals for MOVs or surge modules. Signs of failure include cracking, charring, or a burnt odor.
- Check for collateral damage: Examine the main control board for burnt traces or components.
- Do not bypass surge parts: Never remove or bypass MOVs to clear the error; this removes critical protection.
- Resolution: Replace the damaged surge protection components or the entire main control board assembly. Consider adding an external whole‑home surge protector at the panel.
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Repair Difficulty
Professional Required
5/5
Required Part
Surge Protection MOV Assembly
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