Indoor unit and air conditioning apparatus

An indoor air conditioning unit comprises an air inlet 3b through which air is taken into a main body 1 and a plurality of air outlets 3a through which air from the main body is blown out at different positions. A plurality of vanes 4 at the respective air outlets 3a control the direction in which the air is blown out. A control unit controls the tilt of the vanes so that an outer peripheral side of a vane is above an inner peripheral side of the vane and air blown out of an outlet is guided to the inlet during a short cycle (or short-circuit cycle) at the start of a heating operation. The unit may include a heat exchanger (8, Fig 4) to transfer heat between a refrigerant and air and an outdoor unit (Y, Fig. 1) connected by pipes (A, B, Fig. 1) to form a refrigerant circuit. The short cycle may be performed according to a sensed air outlet temperature or refrigerant temperature, or the detection of a human body within the air conditioned space.