Charger reports ground fault; LED ring red or flashing red; app or web interface shows a ground fault or GFCI trip; charging stops immediately after plug-in.

Safety warning: A ground fault indicates current is leaking to ground. Do not repeatedly reset without inspection. Turn OFF the breaker before handling wiring.

• Step 1 – Inspect the connector and cable:
  • Unplug from the vehicle.
  • Check the J1772 handle and cable for cuts, abrasions, or crushed sections.
  • Look inside the connector for moisture, corrosion, or debris on the pins.
  • If wet, gently dry with a clean cloth and allow several hours in a dry environment before reuse.
• Step 2 – Check for external water ingress:
  • Inspect the charger housing, conduit entries, and cable gland for gaps or cracked seals.
  • Repair or reseal any openings that could allow rain or condensation inside.
• Step 3 – Reset the GFCI:
  • Turn OFF the EVSE breaker for 2 minutes.
  • Turn it back ON and wait for the charger to boot.
  • Try a short test charge with a different vehicle if possible to rule out a vehicle-side fault.
• Step 4 – Insulation resistance test (advanced):
  • With power OFF and the unit opened by a qualified person, disconnect the output cable assembly from the control board.
  • Use a megohmmeter to test insulation between conductors and ground; values should be within manufacturer spec (typically >1 MΩ).
  • If the cable fails, replace the entire EVSE output cable & J1772 connector assembly.
• Step 5 – Persistent GFCI trips:
  • If the cable tests good and multiple vehicles trip the charger, the internal GFCI module or main control board is likely faulty.
  • Contact ChargePoint or an EVSE technician to replace the GFCI module or control board; do not bypass the GFCI.