52
●
Examples of the No. of indoor units settings (SW4, SW3)
No. of indoor units
Indoor unit setting (SW4)
(3P DIP switch)
10 20 30
Indoor unit setting (SW3)
(Rotary switch)
1 unit (factory setting)
All OFF
Set to 1
11 units
1 ON
Set to 1
21 units
2 ON
Set to 1
31 units
3 ON
Set to 1
40 units
1 & 3 ON
Set to 0
52 units
2 & 3 ON
Set to 2
●
Examples of refrigerant circuit (R.C.) address settings (required when link wiring is used) (SW2, SW1)
System address No.
System address (SW2)
(2P DIP switch)
10 20
System address (SW1)
(Rotary switch)
System 1 (factory setting)
Both OFF
Set to 1
System 11
1 ON
Set to 1
System 21
2 ON
Set to 1
System 30
1 & 2 ON
Set to 0
●
Examples of the No. of outdoor units settings (SW6)
No. of outdoor units
Outdoor unit setting (SW6)
(3P DIP switch)
1 unit (factory setting)
1 ON
2 units
2 ON
3 units
1 & 2 ON
●
Address setting of main outdoor unit (SW5)
Unit No. setting
Address setting of outdoor unit (SW5)
(3P DIP switch)
Unit No. 1 (main unit)
(factory setting)
1 ON
2
1
3
OFF
ON
2
1
3
ON
●
Address setting of sub outdoor unit (SW5)
Unit No. setting
Address setting of outdoor unit (SW5)
(3P DIP switch)
Unit No. 2 (sub unit)
2 ON
Unit No. 3 (sub unit)
1 & 2 ON
The sub unit control PCB contains the same switches as the main unit control PCB for No. of indoor units, No. of outdoor units, and
system address. However it is not necessary to set these switches.
1 2 3
1 2 3
1
2 3
1 2 3
1 2 3
1
2 3
2
1 2 3
1 2 3
1
2 3
1 2 3
1 2 3
1
2 3
2
ON
ON
ON
ON
ON
ON
2
1
2
1
2
1
2
1
2
1
2
1
ON
ON
ON
2
3
2
1
1
3
1 2 3
2
1
3
OFF
ON
2
3
2
1
1
3
1 2 3
2
1
3
OFF
ON
2
3
2
1
1
3
1 2 3
2
1
3
OFF
ON
2
3
2
1
1
3
1 2 3
2
1
3
ON
ON
ON
3
1 2
1 2
1 2
3
3
ON
OFF
OFF
ON
3
1 2
1 2
1 2
3
3
ON
ON
ON
ON
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
OFF
ON
OFF
ON
OFF
1 2
1 2
ON
ON
OFF
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