OIL RETURN OPERATION METHOD FOR MULTI-TYPE AIR CONDITIONER AND MULTI-TYPE AIR CONDITIONER

摘要

An object is to provide an oil-return operation method for a multi-type air conditioner with which an oil-return operation according to the installation conditions can be performed and that can reduce undesirable deterioration of the air-conditioning feeling, the occurrence of noise, and the loss of motive power. In an oil-return operation method for a multi-type air conditioner (1) having at least one outdoor unit (3) and a plurality of indoor units (9) connected thereto in parallel with one another, the positional relationship between the outdoor unit (3) and the indoor units (9) in the vertical direction is inputted, and oil-return control the details of which are in accordance with the inputted positional relationship in the vertical direction is performed.