Charging session stops or will not start; display/app shows E02 indicating overvoltage on the supply.

Warning: Overvoltage can damage the charger and vehicle. Do not repeatedly restart charging until the cause is identified.

• Verify grid type and wiring: Compare the actual supply (single-phase or three-phase) with the configuration in the go-e app and installation manual. Ensure L, N, and PE are correctly connected and that neutral is present where required.
• Measure line voltage: With a multimeter, check L–N and L–L voltages at the charger input. Values significantly above nominal (e.g., >253 V L–N or >440 V L–L) indicate a supply issue. Contact your electrician or utility provider.
• Inspect neutral connection: A loose or missing neutral can cause phase overvoltage. With power OFF, tighten the neutral conductor at the charger terminal block and upstream distribution board.
• Check for surge damage: If the error persists even with correct voltage, inspect the go-e power board for burnt components or odor. In this case, the power board or complete charger may need replacement.
• Reset and test: After corrections, power cycle the charger and attempt a short test charge at reduced current (set lower amperage in the app).