Charger display shows E002 and refuses to start charging even though supply voltage is present.

Warning: Overvoltage can permanently damage the charger and vehicle. Do not repeatedly attempt to charge until the cause is identified.

• Verify supply rating: Confirm the charger’s rated input voltage on the ABB nameplate (commonly 208–240 V single-phase). Ensure it is not connected to a higher-voltage circuit such as 277 V or 3-phase without neutral.
• Measure actual voltage: With a multimeter, measure line-to-line and line-to-neutral (if applicable) at the charger input. If readings exceed the specified range, have an electrician correct the supply circuit.
• Check neutral integrity: For systems using neutral, inspect and tighten the neutral conductor at the charger’s input terminal block and at the panel. A loose neutral can cause abnormal voltages.
• Inspect for miswiring: Confirm that line, neutral, and ground are connected to the correct terminals as per ABB wiring diagram. Correct any miswiring.
• If voltage is normal: If measured voltage is within spec but E002 persists, the internal voltage sensing circuit on the power/control board may be defective. Contact ABB support or a qualified service technician to test and replace the control board.