Multichannel air-conditioning device with unitary power controlled heat exchanger

Each bypass channel (BVL,BVR) for each air-conditioning channel and each shut-off flap unit is adjusted by means of an operating device and has a shut-off flap (9a,9b) for each bypass channel. Each shut-off flap unit is designed in such a way that it shuts off both bypass channels in a first flap position and in a second flap position it releases the first bypass channel only partially and shuts off the second bypass channel. In a third flap position, the flap it shuts off the first bypass channel and partially releases the second bypass channel.