Charger LEDs indicate error; unit refuses to charge when connected to certain vehicles but works with others

Safety: Turn OFF power before any internal work.

• Inspect J1772 pins: Ensure all pins are straight and make firm contact. Gently realign slightly bent pins using non‑metallic tools.
• Clean contacts: Use a dry, non‑residue contact cleaner and a soft brush to clean the J1772 connector.
• Check cable strain relief: Excessive strain can cause intermittent pilot or proximity connections; verify the cable is properly clamped.
• Firmware update: If available from the manufacturer, update the charger firmware or replace the control board with a current revision known to be compatible.