Lectron EV charger displays E12 and stops charging; may be associated with DC leakage detection.

Safety first: DC leakage faults are serious. Do not continue using the charger until the cause is identified.

• 1. Try another EV: If available, test the Lectron charger with a different vehicle. If E12 only occurs with one EV, the issue is likely in that vehicle’s charging system.
• 2. Inspect for moisture and contamination: With power OFF, open the Lectron unit and look for moisture, dust, or conductive debris on the main board and around current sensors. Clean gently with dry compressed air and allow to dry completely.
• 3. Check installation environment: Ensure the charger is not installed where it is regularly sprayed with water or exposed to heavy condensation.

Resolution: If E12 occurs with multiple vehicles in a dry, clean environment, the DC leakage detection circuitry on the main control board is likely defective. Replace the main control board or entire unit via Lectron support.