E08
Hyundai
Line-to-Line or Line-to-Neutral Short / Internal Power Stage Fault
E08 appears and charging stops; often associated with tripping of the upstream breaker or RCD.
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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
Shorted power semiconductor (e.g., relay contacts or surge suppressor) on power board, Damaged MOV surge protector, Internal wiring short between line conductors, Burned trace on power board
How to Fix / Troubleshooting
Safety first: If the breaker or RCD trips repeatedly, do not reset it more than once. Turn off power and leave it off until the fault is identified.
- Visual inspection: With power OFF and cover removed, inspect the power board for burn marks, cracked components, or a charred smell.
- Check internal wiring: Ensure no wires are pinched between the housing and cover or touching sharp metal edges.
- Do not attempt component‑level repair: Power semiconductors and MOVs require proper testing equipment.
- Professional service: Have a qualified EVSE technician test the power stage and replace the entire power board assembly if a short is confirmed.
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Repair Difficulty
Professional Required
5/5
Required Part
Power Board Assembly
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