ABL charger shows E08 and refuses to start charging; may be logged as an insulation or isolation fault.
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.
Possible Causes
How to Fix / Troubleshooting
Warning: An insulation fault can indicate a serious safety issue. Do not continue using the charger until it is checked.
Immediate steps:
- Disconnect the vehicle and switch OFF the upstream breaker.
- Inspect the charger housing for signs of water ingress, cracks, or impact damage.
- If the unit is damp, allow it to dry thoroughly in a safe, dry environment before re‑energizing.
Technician diagnostics:
- Insulation test: Perform an insulation resistance test on the supply and internal circuits according to ABL service guidelines.
- Check internal harnesses: Look for damaged insulation, pinched cables, or burn marks on the wiring inside the charger.
- Board evaluation: If wiring and environment are sound, the insulation monitoring circuit on the main control board may be defective and require board replacement.
Do not bypass: Never bypass insulation monitoring or earth connections to clear E08. Only restore service after the root cause is corrected.
Repair Difficulty
Required Part
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