Charging stops or will not start; Wallbox indicates 'Error 05', typically related to temperature.

Safety first: If the charger housing is very hot to the touch, stop using it and let it cool. Turn off the breaker before opening the unit.

• Check installation environment: Ensure the Wallbox has the required clearance around it (per manual) and is not installed in direct sunlight or near other heat sources. Improve ventilation or shading if necessary.
• Inspect for dust and obstructions: Remove any objects blocking airflow around the charger. If the unit has vents, gently vacuum dust from the exterior.
• Verify cable and terminal tightness (qualified person): With power off, open the Wallbox and inspect the main power terminals for discoloration or melted insulation. Tighten any loose terminal screws to the specified torque.
• Temperature sensor check: Locate the internal temperature sensor on the main board or heat sink. Ensure its connector is firmly seated. If the sensor is cracked or detached, replace it or the associated board.
• Reduce charging current: Using the Wallbox app, temporarily lower the maximum charging current and test again. If Error 05 disappears at lower current, the issue may be marginal wiring or ambient temperature; consult an electrician to verify cable sizing.

Persistent overtemperature errors after addressing environment and connections require professional diagnosis and possible replacement of the temperature sensor or main control board.