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3. Main Outdoor Unit P.C.Board Setting
The number of indoor units settings (SW3, SW4)
Number of indoor units
1 - 9 unit
(factory setting : 1 unit)
10 - 12 unit
DO NOT exceed the maximum number of indoor units when making connections.
The indoor unit address setting should also be set less than "12".
In the event of setting more than "13", the communication cannot be made between the outdoor and indoor units.
Examples of refrigerant circuit (R.C.) address settings (required when link wiring is used) (SW1, SW2)
System address No.
Setting the System Address
[SW2: Rotary switch (Yellow), SW1: 2P DIP (Black)]
Outdoor
system
address
1
2
3
4
5
6
7
8
9
Link wiring
10
11
12
13
14
15
16
17
18
7
19
Indoor unit setting (SW3)
(1P DIP switch)
10
ON
OFF
1
ON
ON
1
System address (SW1)
(2P DIP switch)
10 20
Both OFF
1 ON
2 ON
Both ON
SW1 setting
SW2
1P
2P
setting
(10s digit)
(20s digit)
1
OFF
OFF
2
OFF
OFF
3
OFF
OFF
4
OFF
OFF
5
OFF
OFF
6
OFF
OFF
7
OFF
OFF
8
OFF
OFF
9
OFF
OFF
0
ON
OFF
1
ON
OFF
2
ON
OFF
3
ON
OFF
4
ON
OFF
5
ON
OFF
6
ON
OFF
7
ON
OFF
8
ON
OFF
9
ON
OFF
Indoor unit setting (SW4)
(Rotary switch)
Set to 1 - 9
Set to 0 - 2
System address (SW2)
(Rotary switch)
Set to 1
Set to 1
Set to 1
Set to 0
Outdoor
system
address
20
21
22
23
24
Link wiring
25
26
27
28
29
30
7 - 6
Mini VRF SYSTEM
Test Run
SW1 setting
SW2
1P
2P
setting
(10s digit)
(20s digit)
0
OFF
ON
1
OFF
ON
2
OFF
ON
3
OFF
ON
4
OFF
ON
5
OFF
ON
6
OFF
ON
7
OFF
ON
8
OFF
ON
9
OFF
ON
0
ON
ON
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