1
- 3
2-WAY MULTISET VRF SYSTEM
Address Settings
1
2
1
ON
3
ON
OFF
●
Examples of the outdoor units settings
O/U ADD (S007)
(3P DIP switch, blue)
Unit No. 1
(factory setting)
Unit No. setting
2
1
ON
3
ON
OFF
Unit No. 2
2
1
ON
3
ON
OFF
Unit No. 3
1 ON
2 ON
1 & 2 ON
2
1
ON
3
ON
OFF
●
Examples of the No. of outdoor units settings
NO. OF O/U (S006)
(3P DIP switch, blue)
1 unit (factory setting)
No. of outdoor units
2
1
ON
3
ON
OFF
2 units
2
1
ON
3
ON
OFF
3 units
1 ON
2 ON
1 & 2 ON
1
1
1
ON
1
2
3
ON
1
2
3
ON
1
2
3
ON
1
2
3
1
0
ON
1
2
3
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
●
Examples of the No. of indoor units settings
No. of indoor units
NO. OF I/U (S005)
(3P DIP switch, blue)
NO. OF I/U (S004)
(Rotary switch, red)
1 unit (factory setting)
11 units
21 units
31 units
All OFF
1 ON
2 ON
3 ON
1 & 3 ON
Set to 1
Set to 1
Set to 1
Set to 1
Set to 0
40 units
10 20 30
1
1
2
1
ON
2
1
ON
ON
1
2
2
1
ON
1
0
ON
OFF
ON
OFF
ON
OFF
ON
OFF
●
Examples of system address settings (required when link wiring is used)
System address No.
R.C. ADD (S003)
(2P DIP switch, blue)
R.C. ADD (S002)
(Rotary switch, black)
System 1 (factory setting)
Set to 1
Set to 1
Set to 1
Set to 0
System 11
System 21
System 30
Both OFF
1 ON
2 ON
1 & 2 ON
10 20
2. Settings of Indoor Unit Control PCB
OAC (CN105)
A. ADD (CN100)
MODE (CN101)
STOP (CN104)
RUN (CN103)
LED1, 2
(D72, D75)
AP (CN102)
TERMINAL (2P, black)
CHK (CN023)
Power LED (D53)
O/U ADD (S007)
(3P DIP switch, blue)
No. of O/U (S006)
(3P DIP switch, blue)
NO. OF I/U (S004)
(Rotary switch, red)
NO. OF I/U (S005)
(3P DIP switch, blue)
TEST (CN022)
R.C. ADD (S002)
(Rotary switch, black)
R.C. ADD (S003)
(2P DIP switch, blue)
RC (CN006)
The number of outdoor units, number of indoor units, and system address shown below must be set at the No. 1 unit (main unit).
These settings are not necessary at all outdoor units other than the No. 1 unit. At these units, set only the unit number.
<General Explanation of the Switches on the Outdoor Unit Control PCB>
MODE (2P, white)
Changes the operating mode (heating/cooling). (Can be used only at the main unit.)
(CN101)
During normal operation: Short-circuiting these pins once will change all indoor units
in that system to either cooling mode or heating mode.
During automatic address setting: When the pins are not connected, the mode is
heating mode.
A. ADD (2P, white)
Short-circuited for 1 s or longer
→
Automatic address setting begins when the pins
(CN100)
are released. Short-circuiting these pins for 1 s or longer while automatic address
setting is in progress interrupts automatic address setting.
CHK (2P, white)
When these pins are short-circuited, the mode is test run mode. (Test run mode is
(CN023)
automatically canceled after 1 hour.) When the pins are released, test run mode is
canceled.
RC (3P, blue)
The outdoor unit maintenance remote controller can be connected here to check the
(CN006)
alarm details.
RUN (2P, white)
Short-circuit these pins and apply a pulse signal to start all indoor units in that system.
(CN103)
STOP (2P, white)
Short-circuit these pins and apply a pulse signal to stop all indoor units in that system.
(CN104)
(If the pins are left short-circuited, it will not be possible to start operation from the
indoor unit remote controllers.)
AP (2P, white)
These pins are used when applying vacuum to the outdoor unit.
(CN102)
