AOU45RLXFZ Installation Manual
En-19
(3) To start operation, press the [PUMP DOWN] switch*2 for 3 seconds or press after the
power has been on for 3 min.
PUMP DOWN
1WS
TEST RUN
*2: Push switch (SW1)
During pump down, the LED (POWER/MODE) will fl ash 3 times consecutively.
Blink
(3 times)
FEDC
MONITOR
ERROR
BA
POWER
MODE
NOTE:
If the [PUMP DOWN] switch is pressed during compressor operation, the compressor
will stop, and the operation will start after about 3 min.
(4) Close the liquid pipe valve.
(5) When 7.3 psi ~ 0 psi (0.05 MPa ~ 0 MPa) is shown, close the gas pipe valve.
(6) Stop pump down by pressing the [PUMP DOWN] switch for 3 seconds.
The LED will light as follows.
FEDC
MONITOR
ERROR
BA
POWER
MODE
Blink
(3 times)
(7) Disconnect the power supply or turn off the breaker.
NOTE:
• If the pump down is not stopped by pressing the switch as in step (6), it will stop
automatically after 15 min. and the LED will light as follows. If the pump down is
complete, disconnect the power supply or turn off the breaker. If not completed open
the liquid pipe valve, and then start again from step (3).
FEDC
MONITOR
ERROR
BA
POWER
MODE
Blink
(3 times)
Blink
(High-speed)
• In order to interrupt the pump down operation, press the [PUMP DOWN] switch
again. The LED will return to the original display before starting pump down.
(POWER/MODE LED: On)
• The pump down may stop before completion due to error. To complete the pump
down, correct the error, open the liquid pipe valve and then start from step (1) again.
Otherwise, the refrigerant can be recovered from the service port.
12. CUSTOMER GUIDANCE
Explain the following to the customer in accordance with the operating manual:
(1) Starting and stopping method, operation switching, temperature adjustment, timer, air
fl ow adjustment, and other remote control unit operations.
(2) Air fi lter removal and cleaning.
(3) Give the operating manual and installation instruction sheet to the customer.
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