AIR CONDITIONER

PROBLEM TO BE SOLVED: To suppress frequent generation of protection stop of a compressor even in short pipe connection and to improve user's comfortableness.SOLUTION: An air conditioner constituting a refrigeration cycle by connecting an outdoor unit and an indoor unit by connection pipes includes: a protection control part which monitors a physical quantity concerned with the refrigeration cycle, and when the monitored physical quantity reaches a protection control determination value, starts protection control so that a compressor should not be stopped; a protection stop part which when the monitored physical quantity reaches a protection stop determination value, stops protection of the compressor; short pipe connection determination means for determining short pipe connection in which a length of a connection pipe is a set value or less; and a protection control correction part which when the short pipe connection determination means determines the short pipe connection, corrects the protection control determination value to avoid the protection stop.