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122
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Cooling
Heating
Gas operation valve charge port
Suction pressure (low pressure)
Discharge pressure (high pressure)
Check joint in the unit
Discharge pressure (high pressure)
Suction pressure (low pressure)
(9) Test run
(a) Carry out test operation from outdoor units.
Models FDCA301~601
1) Test run method
a) A test run can be initiated from an outdoor unit by using SW2 and SW5-4 for on-site setting.
b) Press SW2 (push-button switch) for one second. The compressor will start when the button is released. The compressor
will stop when 30 minutes elaps.
c) The unit will start a cooling operation, when SW5-4 is OFF, or a heating operation, when SW5-4 is ON.
d)When a test run is completed, press SW2 (push-button switch) again for one second and then release it.
2) Checking the state of the unit in operation
Check discharge pressure and suction pressure, using the check joint provided inside the outdoor unit and the gas charge
valve charge port. The check joint in the unit is provided on the pipe connecting the four-way valva and the heat
exchanger, and these points offer different pressure measurements depending on a cooling or heating operation as sum-
marized in the table below.
3) Setting SW5-1, SW5-2 on-site
a) Defrost conteol switching (SW5-1)
1 When this switch is turned on, the unit will run in the defrost mode more frequentiy.
2 Please set this switch to ON, when installed in a region where outdoor temperaure falls below zero during the
season the unit is run for a heating operation.
b) Snow guard fan control (SW5-2)
1 When this switch is turned on, the outdoor unit fan will run for 10 seconds in every 10 minutes, when outdoor
temperature falls to 3˚C or lower and the compressor is not running.
2 When the unit is used in a very snowy country, please set this switch to ON.
Models FDCA801, 1001
a) Trial operation can be performed using the local setting switches SW3-3 and SW3-4.
1 Turning SW3-3 ON operates the compressor.
2 Turning SW3-4 OFF starts cooling. Turning SW3-4 ON starts heating.
Note (1)Be sure to turn SW3-3 OFF when trial operation is finished.
(b) Trial operation from a remote controller
1) Cooling Test Operation Procedure
Carry out the following test operation procedure using the remote controller.
a) Starting the Cooling Test Operation
1 Press the ON/OFF button to start operation.
2 Press the MODE button and select “
(COOL)”.
3 Press the
TEST button continuously for 3 seconds or longer.
The display changes from “
SELECT ITEM”
“
SET"
“
TEST RUN
”.
4 When “
TEST RUN
” is displayed, press the
SET button to begin the cooling test operation. The display
shows “
TEST RUN.”
b) Canceling the Cooling Test Operation
Pressing the ON/OFF button or the TEMP
button ends the cooling test operation.
The “
TEST RUN” display is cleared.
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