8-2. External input
• “Operation/Stop” mode or "Forced stop" mode can be selected with function setting of indoor unit.
• A twisted pair cable (22AWG) should be used. Maximum length of cable is 150 m.
• The wire connection should be separate from the power cable line.
¢
Control input (Operation/Stop or Forced stop)
The air conditioner can be remotely operated by means of the following on-site work.
Operation is started at the following contents by adding the contact input of a commercial ON/OFF
switch to a connector on the external control PCB and turning it ON.
Unit operation
Initial setting after power is on
Starting mode other than initial setting
Operation mode
Auto changeover
Mode at previous operation
Set temperature
24 °C
Temperature at previous operation
Airflow mode
AUTO
Mode at previous operation
Circuit diagram example
Indoor
control PCB
Connector
1
2
3
Signal
Locally purchased
Surely insulate with
insulation tape etc. since
this wire is not used.
10 m*
Connected unit
Example: Switch
• Contact capacity: DC 5 V or more, 15 mA or more.
• Make the distance from the PCB to the connected
unit within 10 m.
• Use non-polar relays and switches.
• When function setting is "Operation/Stop" mode
Operation
Stop
On
Off
Input signal
Indoor unit
• When function setting is "Forced stop" mode
Remote controller
On
On
On
Input signal
Indoor unit
Command
Remote control
operation invalidity
On
Off
Operation
Stop
Forced stop
Normal
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8-2. External input
8. External input and output
DUCT TYPE
ARXG45, 54KHTA
DUCT TYPE
ARXG45, 54KHTA
