100
10.
SYSTEM STATUS OUTPUT
11.
WIRING FOR GROUP OPERATION
An auxiliary display output circuit (+12V) is available at CN13 on the Indoor PCB to display the
operation for compressor, operation (Fan only) and abnormality.
An optional accessory RBC-IM1-PE is available to display the above signals.
Up to 16 units can be controlled as a group by one remote controller.
1. Align the phase sequence of the power supply to all Outdoor Units.
2. Connect the terminals A, B, C on both the remote controller and the Indoor Unit of No. 1 unit.
3. Connect terminals B, C on both Indoor Units of No. 1 and No. 2 unit. Then connect in the same
way No. 2 and No. 3, No. 3 and No. 4 … up to No. 16 unit.
4.
Remove the CN12-connector on the indoor PCB of No. 2 unit and up to No. 16 unit to prevent
malfunction.
5. Set each unit No. rotary switch on the indoor PCB. The unit connected to the remote controller
should be set as No. 1 unit. Then set the next unit as No. 2 up to No. 16 so that the start time of
each unit is respectively delayed to prevent large simultaneous starting currents.
AB C
AB C
AB C
AB C
AB C
Indoor Unit
No. 1
Indoor Unit
No. 2
Indoor Unit
No. 3
Indoor Unit
No. 16
Remote
Controller
Make sure of correspondence of terminal marks
CN02
CN01
CN12
SW01
SW05
SW04
Rotary switch
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