MULTI-SPLIT AIR CONDITIONER

摘要

The purpose of the invention is to provide a multi-split air conditioner that can reliably eliminate the situation of repeated failure in oil return control even at high outdoor temperature for which a protective function operates. A multi-split air conditioner (1) includes one outdoor unit (2), a plurality of indoor units (3A, 3B) connected in parallel to the outdoor unit (2), and an oil return control unit (40) that performs an oil return operation when an oil return condition is met by controlling the lift of an expansion valve (31) and the speed of a compressor (10) in a cooling cycle, wherein the oil return control unit (40) includes load reducing means (42, 42A) for performing the oil return operation after reducing the load by setting at least one of the thermo-ON indoor units (3A, 3B) to thermo OFF when the compressor (10) is in operation at a speed lower than the required oil return speed during the oil return operation.