Heating, ventilating and / or air conditioning device for a motor vehicle and method for operating a heating, ventilating and / or air conditioning device

摘要

A heating, ventilation and / or air conditioning device (10) is specified, with a system controller and an electrical heating device (12), the at least one electrical heating unit (14), a fan (27), and a control unit (36) for setting a heating power of the at least one electrical heating unit (14) and at least one flow channel (18) which opens into the vehicle interior, wherein at least one adjustable flap (22) is arranged in the flow channel (18), by means of which a flow cross section of the at least one Flow channel (18) is adjustable, and a maximum permissible heating power for heating the vehicle interior is stored in the system control for different operating states, the maximum permissible heating power is dependent on at least two of the following operating parameters: an inlet temperature (38) one by the electrical heating unit flowing air stream, - a speed (40) of the Fan (27) and a position (42) of the at least one adjustable flap (22). Furthermore, a method for operating a heating, ventilation and / or air conditioning device (10) is specified.