Charging is very slow compared to expected rate; Webasto charger and vehicle both show charging but at reduced kW.

Safety first: No immediate hazard, but avoid opening the unit while energized.

• Check app or display: Confirm the current limit setting in the Webasto app or installer menu. Increase it only within the limits of your wiring and breaker.
• Verify supply phases: Have an electrician confirm whether the charger is wired single‑phase or three‑phase and that all phases are present.
• Ambient temperature: If the charger is hot to the touch or installed in a confined space, improve ventilation or shade to reduce thermal derating.
• Load management: If connected to a Webasto load controller, check if other household loads are causing intentional current reduction.