Kia EV charger displays E14 and refuses to charge; may be accompanied by a message about phase sequence or phase loss (for three-phase models).

Safety first: Three-phase wiring must be handled by a qualified electrician. Incorrect phase wiring can damage equipment.

• 1. Verify supply phases: Have an electrician measure voltage between all phase pairs at the charger input. Any missing phase or abnormal voltage must be corrected at the panel or junction box.
• 2. Check phase rotation: For chargers that require a specific phase sequence, the electrician should verify and correct the phase order using a phase rotation tester.
• 3. Tighten terminals: With power off, the electrician should tighten all phase terminals inside the charger and at the breaker to eliminate intermittent phase loss.
• 4. Internal phase detection: If supply wiring is correct but E14 persists, the phase detection circuit on the main control board may be faulty and require board replacement.