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10-3.Dry Mode
In this mode, a microcomputer control lowers humid-
ity while maintaining a constant temperature. The
microcomputer turns the compressor on and off at
regular intervals (3 to 6 minutes on and/or off). Dur-
ing the halt, the airflow fan stops as well.
6
minutes
Compressor
Stop
Airflow fan
Low
Stop
Room temperature (T
The airflow fan will operate in the Low position, independent of the position of the airflow setting control.
10-4.Economy Operation
(1) When the economy button is pushed, the
economy lamp is lit and the economy operation
will start. (But this operation will not start in the
mode of fan only.)
(2) The economy operation with the cooling and dry
modes will be performed in the manner as stated
below.
10-4-1. Cooling Operation
(1) The compressor will be operated by means of
ON/OFF interval operation.
(2) The room fan will be controlled as stated below:
• When compressor is turned on: L
• When compressor is turned off: UL
• When monitoring: OFF
(3) An interval operation will be started from OFF
time. But when starting operation, it will be kept
in ON position for 6 minutes.
a
b
Stop
Low
Low
Stop
) measurement timing
A
Time
Fig. 10-2
The compressor and airflow fan will operate indepen-
dent of the temperature control, though the pattern
of operation depends on the relation between room
temperature (T
below:
Stop
Stop
Low
Stop
Stop
10-4-2. Dry Operation
(1) ON/OFF interval operation both of the compres-
sor and fan will be performed (At the OFF time,
both of the compressor and fan will be set to
OFF.)
(2) Wind capacity is of L.
(3) An interval operation will be performed in Ta ≥ Ts
condition.
10-4-3. Fan Operation
(1) When operation change over switch is set to fan
operation, the economy operation shall not be
executed. And the economy lamp shall not be lit
too. (Normal fan operation will be performed.)
Ta
18 min ON
-4 min OFF
+3
+2
3 min ON
+1
-4 min OFF
Ts
Monitoring (Compressor, OFF. Fan, OFF)
– 11 –
) and set temperature (Ts), as shown
A
Table 10-3
Relation between
room temp. (T
) and
A
set temp. (T
)
S
T
> T
+ 2
A
S
T
+ 2 > T
> T
S
A
S
T
> T
S
A
5 min ON
5 min ON
-7 min OFF
-10 min OFF
3 min ON
3 min ON
-7 min OFF
-10 min OFF
1
2
Fig. 10-3
OFF
ON
period
period
a
b
4 min.
6 min.
5 min.
5 min.
6 min.
3 min.
Time
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