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74 Outdoor Unit
Electrical Wiring
DIP switch setting
n Checking according to dip switch setting
1. You can check the setting values of the Master outdoor unit from the 7 segment LED.
The dip switch setting should be changed when the power is OFF.
2. It checks whether the input is properly performed without the bad contact of the dip switch or not
n Checking the setting of the Master unit
The number is sequentially appeared at the 7 segment in 5 seconds after applying the power. This number
represents the setting condition. (For example, represents R410A 28HP)
Master model code ‘ Slave1 model code ‘ Slave2 model code ‘ total capacity ‘ 2 ‘ 25 ‘ 140 or 160
1 ~255 : Master model code
1 ~255 : Slave1 model code
1 ~255 : Slave2 model code
1 ~255 : Slave3 model code
8~42HP : HP number(sum of master capacity and slave capacity)
No display : cooling only 2 : heat pump
25 : normal
140 or 160 : Model Type (ARUN××BT3:140, ARUN××DT3:160)
Example) 28Hp, R410A
15 ’ 15 ’ 30 ’ 2 ’ 25 ’ 140 or 160
CAUTION
Product may not properly operate if the relevant DIP switch is not properly setup.
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Refer to table code
Model Code
Model Code Unit (HP) Unit Ref.
12 8
13 10
14 12
15 14
Master &
Slave
R410A
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