Siemens EV charger shows E005 and refuses to start charging; may occur after a power outage or surge.

Safety first: Overheating can damage internal components. Allow the unit to cool before opening.

• Check ambient conditions: Ensure the charger is not installed in direct sunlight or in a confined, unventilated space. Compare ambient temperature to the operating range in the Siemens manual.
• Inspect ventilation: Remove any obstructions from vents. Clean dust and debris from intake and exhaust openings using a dry cloth or low-pressure air.
• Cooling fan check (if present): When the charger is powered and attempting to charge, listen for the internal fan. If it does not run or is noisy, it may be failing and require replacement.
• Power reset: Turn off the breaker for 5 minutes to allow full cool-down and reset. Restore power and test again.

If E005 persists under normal ambient conditions with clear ventilation, the internal temperature sensor or control board may be defective and should be checked by Siemens service.