There is provided an FPC for mounting components with an improved workability of fitting into other components. The method includes the steps of: detecting a loop of a control packet of the rapid spanning tree protocol or the multiple spanning tree protocol; and discarding the control packet by which the loop is detected so as to prevent occurrence of the loop of the control packet. The method also includes keeping the first device unaware of the rerouting. The method may further include associating, by the electronic apparatus, the confirmation with the one or more asserted attributes of the person, and storing, by the electronic apparatus and in the electronic database, an indication that the one or more asserted attributes are confirmed. In a cooling mode, the refrigerant continues to the second air side heat exchanger, which acts as an evaporator. Each of the devices that become communication partners is provided with a frequency spectrum of a pattern specific to each of the devices.