Fujitsu GENERAL ARHG72LHTA Design & Technical Manual page 86

5. When LED display changes as shown in the below figure, close the 3-way valve on the gas
pipe side tightly.
POWER
MODE
NOTE: If the valve on the gas pipe side is not closed, refrigerant may flow into the piping
after the compressor stops.
6. LED display changes after 1 minute as shown in the figure below.
The LED will light as follows.
POWER
MODE
Fans and compressor stop automatically.
NOTE: 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.
POWER
MODE
Pump down is completed.
Notices:
• To stop pump down, press the [PUMP DOWN] button again.
• To start the pump down again after the compressor is automatically stopped due to an error,
disconnect the power supply and open the 3-way valves. Wait 3 minutes, reconnect the pow-
er supply and start the pump down again.
• When starting the operation after completion of the pump down, disconnect the power sup-
ply, and then open the 3-way valves. Wait 3 minutes, reconnect the power supply and per-
form a test run in the "COOL" operation mode.
• If an error occurs, recover the refrigerant from service port.
PUMP
ERROR
DOWN
(L1)
● ○ ●
Step (4)
Closing direction
Hexagon wrench
Liquid pipe
PUMP
ERROR
DOWN
(L1)
● ○ ●
PUMP
ERROR
DOWN
(L1)
○ ○ ○
- 82 -
LOW PEAK
NOISE CUT
(L2) (L3) (L4) (L5)
○ ○ ○ ○
Step (5)
Closing direction
Gas pipe
LOW PEAK
NOISE CUT
(L2) (L3) (L4) (L5)
○ ○ ○ ○
LOW PEAK
NOISE CUT
(L2) (L3) (L4) (L5)
○ ○ ○ ○
(L6)
●
(L6)
○
(L6)
○