In the air conditioner which the air conditioner, possesses with the refrigerant piping which connects with the control method

摘要

PPROBLEM TO BE SOLVED: To replace an outdoor unit of an air conditioner of low pressure-proof design by an outdoor unit of high pressure-proof design without making a change in an existing air conditioning control means of the outdoor unit. PSOLUTION: In this air conditioner having the outdoor unit 2 comprising a compressor 10, an indoor unit 3, and refrigerant piping 4 connecting the outdoor unit 2 and the indoor unit 3, and performing air conditioning operation by circulating a refrigerant between the outdoor unit and the indoor unit through the refrigerant piping, the outdoor unit comprises the air conditioning control means for driving the compressor in a state that a refrigerant actual pressure Pr in the refrigerant piping is not over a pressure upper limit value Pcmax, and the air conditioning control means for driving the compressor in a state that a corrected refrigerant pressure obtained by adding a correction value ΔH to the actual pressure Pr is not over the pressure upper limit value Pcmax, when withstand pressure of the refrigerant piping is lower than the pressure upper limit value Pcmax for controlling. PCOPYRIGHT: (C)2007,JPO&INPIT