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8-17
5. Automatic pump down
An automatic pump down system is applied to the unit to prevent the unit operation from extra
decreasing of low pressure due to pump down operation or burning of scroll compressor due to close
stop valve.
(1) Controller operation
Press the
key twice to select the pump down mode, then, the LCD indicates "P down".
Select "ON" by using
key or
key, and press the
key to start the automatic pump down
operation.
MODE
M
™
Controller indication
COMP.
DEFROST IN RANGE
DE-HUMID.
SUPPLY
RETURN
ALARM
R.H.
DISPLAY SELECT G SET
G SET
MANUAL
UNIT
UP
SELECT
SET
DEFROST
ON/OFF
˚C F
8
CHERT
/
/
I
/
O
S
DOWN
ENTER/ESC
Pump down mode
Pump down completed
COMP.
DEFROST IN RANGE
DE-HUMID.
SUPPLY
RETURN
ALARM
R.H.
DISPLAY SELECT
MANUAL
UNIT
UP
SELECT
SET
DEFROST
ON/OFF
˚C F
8
CHERT
/
/
I
/
O
S
DOWN
ENTER/ESC
DISPLAY
ON/OFF
DISPLAY
ON/OFF
•When the pump down
operation is ended
abnormally, "E201"
(pump down malfunction)
will be indicated.
•When the pump down
operation is completed,
the unit becomes stop
state.
Press
key to start
pump down
Fig. 2
Fig. 1
Current indication mode
(Operation condition
ndication)
G-set mode
(Energy saving
setting)
※
1
Pump
down
operation
Dehumidification
ON-A•OFF setting
MODE
M
MODE
M
MODE
M
MODE
M
※
1: When the dehumidification ON-A
・
OFF is set to ON, G-Set operating mode will be skipped.
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