En-15
10.2. External output
10.2.1. Wiring of connector
When installing connection cable, specified part (optional parts) must be used.
Output
Connector No.
Optional parts
Error status
CN12
External connect kit
Compressor status
CN13
External connect kit
* 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
10.2.2. Error status output (CN12)
An air conditioner error status signal is produced when a malfunction occurs.
10.2.3. Compressor status output (CN13)
Compressor operation status signal is produced when the compressor is running.
10.3. Connection method
CAUTION
Do not fix with the fan motor cable.
Do not route the connection cable overlapping with the power supply cable.
Remove the Inverter cover before work.
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.
11.2. Test operation method
Be sure to configure test run settings only when the outdoor unit has stopped
operating.
Test operation setting method (It can be performed in the following two ways)
•
Set with test operation setting (refer to installation manual of indoor unit for further
details) available in the remote controller.
•
“Cooling Operation” and “Heating Operation” can be set, using “SELECT” button and
“ENTER” button available on the board of display unit.
(*Make sure to perform the first test operation with cooling operation.)
Set as per the procedure given below.
6:
6:
6:
6:
6:
LED display part
Button part
•
Depending on the communication status between the indoor and outdoor units,
it may take several minutes for the system to start operating after settings for the
test run are complete.
•
After the test run settings are complete, the outdoor units and the connected
indoor units will start operating. Room temperature control will not activate during
test operation (continuous operation).
•
If a knocking sound can be heard in the liquid compression of the compressor,
stop the unit immediately and then energize the crank case heater for a sufficient
length of time before restarting the operation.
11.2.1. Setting method on outdoor unit board
(1) Turn on the power of the outdoor unit and enter standby mode.
“POWER/MODE” Lamp lights up.
POWER/
MODE
ERROR
PUMP
DOWN
LOW
NOISE
PEAK
CUT
(L1)
(L2)
(L3)
(L4)
(L5)
(L6)
●
○
○
○
○
○
○
○
Sign “
○
”: Lights off, “
●
”: Lights on
(2) Press the “ENTER” button for more than 3 seconds.
POWER/
MODE
ERROR
PUMP
DOWN
LOW
NOISE
PEAK
CUT
(L1)
(L2)
(L3)
(L4)
(L5)
(L6)
Blink
○
○
○
Blink
○
○
○
Sign “
○
”: Lights off, “
●
”: Lights on
(3) Press the “SELECT” button, LED of the test run mode switched between “COOL”
and “HEAT”.
Cooling test mode
POWER/
MODE
ERROR
PUMP
DOWN
LOW
NOISE
PEAK
CUT
(L1)
(L2)
(L3)
(L4)
(L5)
(L6)
Blink
○
○
○
Blink
○
○
○
Sign “
○
”: Lights off, “
●
”: Lights on
Heating test mode
POWER/
MODE
ERROR
PUMP
DOWN
LOW
NOISE
PEAK
CUT
(L1)
(L2)
(L3)
(L4)
(L5)
(L6)
Blink
○
○
Blink
○
○
○
○
Sign “
○
”: Lights off, “
●
”: Lights on
(4)
After confirming the operation mode, Press “ENTER” button.
The display changes as follows, and air conditioner starts operation.
Cooling test mode
POWER/
MODE
ERROR
PUMP
DOWN
LOW
NOISE
PEAK
CUT
(L1)
(L2)
(L3)
(L4)
(L5)
(L6)
Blink
○
○
○
●
○
○
○
Sign “
○
”: Lights off, “
●
”: Lights on
Heating test mode
POWER/
MODE
ERROR
PUMP
DOWN
LOW
NOISE
PEAK
CUT
(L1)
(L2)
(L3)
(L4)
(L5)
(L6)
Blink
○
○
●
○
○
○
○
Sign “
○
”: Lights off, “
●
”: Lights on
(5) Press “ENTER” button.
Air conditioner stopped operation.
POWER/
MODE
ERROR
PUMP
DOWN
LOW
NOISE
PEAK
CUT
(L1)
(L2)
(L3)
(L4)
(L5)
(L6)
●
○
○
○
○
○
○
○
Sign “
○
”: Lights off, “
●
”: Lights on
11.3. Check list
Check items during test operation.
Is the outdoor unit making any abnormal noise or vibrating significantly?
Is the cold air or hot air blowing from indoor unit according to the operation
mode?
Check that the “ERROR” LED blinks.
If, it has displayed, check the error content as per 12.2. described later.
Operate the unit according to the operating manual provided with the indoor
unit, and check that it is operating normally.
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