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• Apply voltage
In case of external power supply, set the slide switch of
SW1 to "VOL" side.
1
1
Input 1
Input 2
Connected unit
*1: The switches can be used on the following condition:
DC 12 V to 24 V, 1 mA to 15 mA.
*2: Make the power supply DC 12 V to 24 V 10 mA or
more.
Combination of external input and output
By combining the function setting of the indoor unit and rotary switch setting of the External input and output PCB, you can
select various combinations of functions.
To set the function setting, refer to the installation manual of the indoor unit.
For details, please refer to the technical manual.
Combination examples of external input and output are as follows:
Rotary
Mode
SW
Operation/Stop
0-1
1
Operation
Forced
0-2
2
Thermostat OFF
1 to 8 3 to 9, A
Forced
9
B
Thermostat OFF
Forced
10
C
Thermostat OFF
Forced
11
D
Thermostat OFF
NOTE: Input of Operation/Stop depends on the setting of function setting 46 of the indoor unit.
00: Operation/Stop mode 1 (R.C. enabled)
01: (Setting prohibited)
-
+
Power supply
2
External input
1
2
Not available
Stop
Not available
For details regarding the settings, please check the Design & Technical Manual.
Not available
Not available
Not available
02: Forced stop
03: Operation/Stop mode 2* (R.C. disabled)
4.3. External output
• A twisted pair cable (22AWG) should be used.
• Permissible voltage and current: DC 5 V to 30 V / 3 A, AC
PCB
30 V to 250 V / 3 A
1
• For details, refer to the following chart "Combination of
2
external input and output".
C
(Example)
Connected device 1
(Operation status)
Connected device 2
(Error status)
Connected device 3
(Indoor unit fan
operation status)
Signal type
1
Edge
Operation/Stop
Pulse
Edge
Error status
Available for USA Market Only
Edge
Operation/Stop
Edge
Operation/Stop
Edge
Operation/Stop
*: This function might not be available in some units.
Refer to the installation manual of the indoor unit.
PCB
Power supply
1
2
3
Power supply
4
Power supply
5
6
External output
2
3
Indoor unit fan
Error status
operation status
Indoor unit fan
External heater
operation status
output
Indoor unit fan
External heater
operation status
output
External heater
Error status
output
Indoor unit fan
Error status
operation status
En-3
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