En-13
10.2.2. Error status output (CN12)
An air conditioner error status signal is produced when a malfunction occurs.
Error status
Output signal
Error
ON
Normal
OFF
10.2.3. Compressor status output (CN13)
Compressor operation status signal is produced when the compressor is running.
Comressor status
Output signal
Operation
ON
Stop
OFF
11. TEST RUN
11.1. Pre-test run check items
Before the test operation, refer to the figure and check the following items.
Is the outdoor unit securely installed?
Have you performed gas leakage inspection?
(Connection joints of various pipes (flange connection, brazing))
Is the heat insulation done completely?
(Gas pipe, liquid pipe, drain hose extension on indoor unit side etc)
Is the water discharging from drain without any problems?
Are the cables connected correctly?
Are the cables as per specifications?
Is the earth wire connected accurately?
Are there any obstacles blocking the suction gate, and outlet of
the indoor/outdoor units?
Have you filled the specified amount of refrigerant?
Are the stop valves of gas pipe and liquid pipe fully open?
Has the power been supplied to crankcase heater for more than 6 hours?
After checking that the above items are all in order, refer to “11.2. Test operation method”
to test operation the unit. If there are problems, adjust immediately and recheck.
10.1.2. Low noise mode (CN10)
• 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 “9.2. Function settings”.
Input Signal ···ON : Low noise mode
···OFF : Normal operation
Input Signal
Low noise mode
ON
ON
OFF
OFF
10.1.3. Peak cut mode (CN11)
• 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 “9.2. Function settings”.
Input Signal ···ON : Peak cut mode
···OFF : Normal operation
Input Signal
Peak cut mode
ON
ON
OFF
OFF
10.2. External output
10.2.1. Wiring of connector
When installing connection cable, specified part (optional parts) must be used.
Output
Connector
Error status
CN12
Compressor status
CN13
*
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
Connected unit
(Field supply)
Connection
cable
Signal
*10m (33ft)
Connector
Load
Power
supply
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