E12
Grizzl-E
Self‑Test / Internal Diagnostic Failure
Charger LEDs indicate error; unit refuses to start charging after internal self‑test
Advertisements
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.
Advertisements
Possible Causes
Failed internal relay test, Faulty GFCI self‑test circuit, Corrupted firmware on control board, Defective internal wiring harness
How to Fix / Troubleshooting
Safety: Turn OFF power before opening the unit.
- Power cycle: Turn the breaker OFF for at least 60 seconds, then ON, and observe whether the self‑test completes.
- Inspect internal harnesses: With the cover removed, check that all internal plug‑in harnesses between the control board, contactor, CT, and sensors are fully seated and undamaged.
- Look for obvious damage: Burn marks or melted connectors indicate component failure that must be replaced.
- Firmware/board replacement: If wiring is intact and E12 persists, the main control board may have a firmware or hardware fault and should be replaced as a unit.
Advertisements
Repair Difficulty
Professional Required
5/5
Required Part
Internal Wiring Harness
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements