Terminal plug 3P plug (black): Terminal plug for the communications line
(CN015) • At the time of shipment from the factory, the short-circuiting socket (2P, black) is installed
between pins 1 and 2 on the terminal plug (terminal = yes).
• When central control is used for multiple systems, leave the short-circuiting socket in place
only on the outdoor unit with a system address of 1. At all other outdoor units (other than
unit No. 1), move the short-circuiting socket to between 2 and 3 (terminal = no).
If multiple short-circuiting sockets remain in place during central control, a communications
failure will occur.
• In the case of a single system only (system address = 0), do not remove the short-circuiting
socket. (Alarm “E04” will occur.)
Quiet mode 2P plug (white): Enables operation in quiet mode.
(CN028) • The outdoor unit fan and compressor frequencies are subject to limits during operation.
• Low-noise operation is enabled when the relay is turned ON.
● Example of wiring
Outdoor unit control PCB
Note 1: The maximum length of the wiring between the outdoor unit PCB and the relay is 2 m.
• Lead wire with 2P plug (special-order part: WIRE K/ 623-161-2098)
• Relay, field supply, contact input specifications: DC 5 V, 0.5 mA
(Recommended relay: Fuji Electric HH62SW, compatible with micro contacts)
• Use a commercially available timer (such as the Omron H5 daily time switch).
2
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Table 1. Method of System Address Setting
[S002 (rotary, black), S003 (2P DIP switch, green or blue)]
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