An air conditioning apparatus including a refrigerant circuit , the air conditioning apparatus comprising: a first device of a plurality of safety devices including at least two types of a refrigerant detector, an alarm device, an isolation valve, and a ventilation device; a second device of a type different from the first device of the plurality of safety devices; a connecting portion including a first electric wire connecting portion and a second electric wire connecting portion ; a first electric wire connected to the first device and to the first electric wire connecting portion ; a second electric wire connected to the second device and to the second electric wire connecting portion ; a control unit ; a circuit configuration portion including a first portion that electrically connects the first electric wire connecting portion to the control unit , a second portion that electrically connects the second electric wire connecting portion to the control unit , and a coupling portion that electrically connects the first electric wire connecting portion to the second electric wire connecting portion ; an interlock circuit formed by the circuit configuration portion together with the first electric wire and the second electric wire connected to the connecting portion ; a first member that enables formation of a first circuit including at least part of the circuit configuration portion without going through the first electric wire and the second electric wire ; wherein the first circuit is a circuit formed by short-circuiting the first portion of the circuit configuration portion and the second portion of the circuit configuration portion , and wherein the control unit is configured to prohibit an operation of the air conditioning apparatus when no current flows through either the interlock circuit or the first circuit. a first device of a plurality of safety devices including at least two types of a refrigerant detector, an alarm device, an isolation valve, and a ventilation device; a second device of a type different from the first device of the plurality of safety devices; a connecting portion including a first electric wire connecting portion and a second electric wire connecting portion ; a first electric wire connected to the first device and to the first electric wire connecting portion ; a second electric wire connected to the second device and to the second electric wire connecting portion ; a control unit ; a circuit configuration portion including a first portion that electrically connects the first electric wire connecting portion to the control unit , a second portion that electrically connects the second electric wire connecting portion to the control unit , and a coupling portion that electrically connects the first electric wire connecting portion to the second electric wire connecting portion ; a first portion that electrically connects the first electric wire connecting portion to the control unit , a second portion that electrically connects the second electric wire connecting portion to the control unit , and a coupling portion that electrically connects the first electric wire connecting portion to the second electric wire connecting portion ; an interlock circuit formed by the circuit configuration portion together with the first electric wire and the second electric wire connected to the connecting portion ; a first member that enables formation of a first circuit including at least part of the circuit configuration portion without going through the first electric wire and the second electric wire ; wherein the first circuit is a circuit formed by short-circuiting the first portion of the circuit configuration portion and the second portion of the circuit configuration portion , and wherein the control unit is configured to prohibit an operation of the air conditioning apparatus when no current flows through either the interlock circuit or the first circuit. <EOS>