En-3
• Apply voltage
In case of external power supply, set the slide switch of
SW1 to “VOL” side.
1
2
C
-
+
Input 1
1
1
Input 2
Connected unit
PCB
Power supply
2
*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.
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
30 V to 250 V / 3 A
• For details, refer to the following chart “Combination of
external input and output”.
(Example)
1
2
3
4
5
6
Power supply
Power supply
Power supply
Connected device 1
(Operation status)
Connected device 2
(Error status)
Connected device 3
(Indoor unit fan
operation status)
PCB
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:
Mode
Rotary
SW
External input
External output
1
2
Signal type
1
2
3
0-1 1
Operation/Stop Not
available
Edge
Operation/Stop Error
status
Indoor unit fan
operation status
Operation
Stop
Pulse
0-2 2
Forced
Thermostat OFF
Not available
Edge
Error status
Indoor unit fan
operation status
External heater
output
1 to 8 3 to 9, A
Available for USA Market Only
For details regarding the settings, please check the Design & Technical Manual.
9 B
Forced
Thermostat OFF
Not available
Edge
Operation/Stop
Indoor unit fan
operation status
External heater
output
10
C
Forced
Thermostat OFF
Not available
Edge
Operation/Stop
Error status
External heater
output
11
D
Forced
Thermostat OFF
Not available
Edge
Operation/Stop
Indoor unit fan
operation status
Error status
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)
02: Forced stop
01: (Setting prohibited)
03: Operation/Stop mode 2* (R.C. disabled)
*: This function might not be available in some units.
Refer to the installation manual of the indoor unit.
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