Fujitsu AOYG36LATT, Installation Manual

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(3) Press ENTER (TEST RUN) switch for more than 3 seconds.
POWER
MODE
ERROR
TEST
RUN
PUMP
DOWN
LOW NOISE PEAK CUT
(L1) (L2) (L3) (L4) (L5) (L6) (L7)
TEST RUN LED will light on.
If the compressor is operating at starting the test run, the compressor will stop and, •
after a while, the test run will start.
Either of the above LOW NOISE or PEAK CUT LED will light on during the test run if
•
local setting function is selected.
(4) Confirm operating status.
(5) Press ENTER
(TEST RUN) switch again.
POWER
MODE
ERROR
TEST
RUN
PUMP
DOWN
LOW NOISE PEAK CUT
(L1) (L2) (L3) (L4) (L5) (L6) (L7)
TEST RUN LED lights off, and TEST RUN stops.
Test run will finish after about 60 minutes automatically. At the same time, TEST RUN •
LED will light off.
Test run may be stopped before operating for 60 minutes if an error occurs after a
•
starting test run.
s d
11. PUMP DOWN
WARNING
Never touch electrical components such as the terminal blocks or reactor except the
switch on the display board. It may cause a serious accident such as electric shock.
CAUTION
Perform the pump down operation before disconnecting any refrigerant pipe or electric
cable.
Collect refrigerant from the service port or the 3-way valve if pump down cannot be
performed.
In case of a group control system installation, do not turn the power off pump down is
completed in all outdoor units.
(Group control system installation described in “SPECIAL INSTALLATION METHODS”
in the installation manual of the indoor unit.)
Operate
PUMP DOWN switch on the display board in the manner described below.
LED display part
PUMP DOWN
switch
Charging port
Charging port cap
3-way valve
Service hose
Terminal blocks
Service port
Service port cap
Service hose
Reactors
11.1. Preparation for pump down
Confirm that the power is off, and then open the service panel.
11.2. Pump down procedure
(1) Check the 3-way valves (both at the liquid side and gas side) are opened.
(2) Turn the power on.
POWER
MODE
ERROR
TEST
RUN
PUMP
DOWN
LOW NOISE PEAK CUT
(L1) (L2) (L3) (L4) (L5) (L6) (L7)
(3) Press
PUMP DOWN
switch for 3 seconds or more after 3 minutes after power on.
ERROR
TEST
RUN
PUMP
DOWN
LOW NOISE PEAK CUT
POWER
MODE
(L1) (L2) (L3) (L4) (L5) (L6) (L7)
LED display lights on as shown in the above figure, and the fans and the
compressor start operating.
(4) LED display will change as shown below about 3 minutes after the compressor
starts. Fully close the 3-way valve on the liquid pipe side at this stage.
ERROR
TEST
RUN
PUMP
DOWN
LOW NOISE PEAK CUT
POWER
MODE
(L1) (L2) (L3) (L4) (L5) (L6) (L7)
If the valve on the liquid pipe side is not closed, the pump down cannot be •
performed.
(5) When LED display changes as shown in the below figure, close the 3-way valve on
the gas pipe side tightly.
ERROR
TEST
RUN
PUMP
DOWN
LOW NOISE PEAK CUT
POWER
MODE
(L1) (L2) (L3) (L4) (L5) (L6) (L7)
If the valve on the gas pipe side is not closed, refrigerant may flow into the piping
after the compressor stops.
Step (5)
Closing direction
Step (4)
Hexagon wrench
Liquid pipe
Gas pipe
Closing direction
(6) LED display changes after 1 minute as shown in the figure below.
ERROR
TEST
RUN
PUMP
DOWN
LOW NOISE PEAK CUT
POWER
MODE
(L1) (L2) (L3) (L4) (L5) (L6) (L7)
Fans and compressor stop automatically.
If the pump down is successfully completed (the above LED display is shown), the
outdoor unit remains stopped until the power is turned off.
(7) Turn the power off.
ERROR
TEST
RUN
PUMP
DOWN
LOW NOISE PEAK CUT
POWER
MODE
(L1) (L2) (L3) (L4) (L5) (L6) (L7)
PUMP DOWN is completed.
Notes:
To stop pump down, press the • PUMP DOWN switch again.
To start the pump down again after the compressor is automatically stopped due to an •
error, turn the power off and open the 3-way valves. Wait 3 minutes, turn the power on
and start the pump down again.
When starting the operation after completion of the pump down, turn the power off,
•
and then open the 3-way valves. Wait 3 minutes, turn the power on and perform a test
run in the “COOL” operation mode.
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