Wallbox or cable becomes unusually warm to the touch during normal charging, without any error codes.

Safety first: If you smell burning or see discoloration, stop using the charger immediately and turn off the breaker.

• Check temperature: Slight warmth is normal, but surfaces should not be too hot to touch. If they are, discontinue use.
• Inspect terminals: With power off, open the wallbox and check all L/N/PE terminals for tightness and signs of overheating (darkening, melted insulation).
• Examine plug/socket: Look for discoloration or deformation of the Type 2 plug or socket. Replace any component showing heat damage.
• Verify cable size: Confirm that the supply cable cross-section matches the current rating (e.g., 6 mm² for 32 A three-phase, depending on local code).
• Professional check: Have an electrician perform a thermal imaging scan under load if overheating is suspected.