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3.1.2 Low noise mode (CN931)
•
This features reduces the operating sound of the outdoor
unit from the normal sound. The air conditioner is set to
the "Low noise mode" when closing the contact input of a
commercial timer or ON/OFF switch to a connector on the
outdoor control PC board.
* Performance may drop depending on the outside air
temperature condition, etc.
* Set the "Low noise mode" level. Refer to the installation
manual of outdoor unit.
Input Signal ···ON : Low noise mode
···OFF : Normal operation
Input Signal
ON
OFF
Low noise mode
ON
OFF
3.1.3 External input priority mode (CN932)
•
It is possible to switch to cooling operation and heating
operation by using external input.
* Set the "External input priority mode". Refer to the
installation manual of outdoor unit.
Input Signal ···ON : Heating operation
···OFF : Cooling operation
Input Signal
ON
OFF
Priority mode
Heating
Cooling
3.1.4 Peak cut mode (CN933)
•
Operation that suppressed the current value can be
performed by means of the connected unit. The air
conditioner is set to the Peak cut mode by applying
the contact input of a commercial ON/OFF switch to a
connector on the outdoor control PC board.
* Set the "Peak cut mode" level. Refer to the installation
manual of outdoor unit.
Input Signal ···OFF : Peak cut mode
···ON : Normal operation
Input Signal
ON
OFF
Peak cut mode
ON
OFF
En-2
3.1.5 Stop operation mode (CN934)
•
It is possible to switch to Batch stop or Emergency stop
and Normal operation by using external input.
* Set the "Batch stop" or "Emergency stop" pattern. Refer
to the installation manual of outdoor unit.
Input Signal ···ON : Stop operation
(Batch stop or Emergency stop)
···OFF : Normal operation
•
When function setting is
On
Input signal
Off
Operation
Indoor unit
Stop
Remote controller
•
When function setting is
On
Input signal
Off
Operation
Indoor unit
Stop
Remote controller
3.2. Control output setting
3.2.1 Wiring of connector
Output
Error status
Compressor status
•
Make the distance from the PC board to the connected
unit within 10m (33ft).
1) Power supply
• Voltage (Chart sign=Vcc) : DC 24V or less
2) Load
• Load : DC 500mA or less is recommended
Circuit diagram example
Outdoor unit
control PC board
Wire
Connector
+
1
CN951
2
1
*10 m (33ft)
CN952
2
3.2.2 Error status output (CN951)
An air conditioner error status signal is produced when a
malfunction occurs.
Error status
Error
Normal
Output signal
ON
OFF
"
"
Batch stop
mode
On
On
"
"
Emergency stop
mode
On
On
Connector
CN951
CN952
６／４／２０１０ ５：０４：４８ ＰＭ
Connected unit
(Field supply)
Vcc
Vcc
Power
supply
+
Load
-
Signal
On
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