9-2. Dry Operation (Dehumidification)
●
Dry operation uses the ability of the cooling cycle to remove moisture from the air, but by running at low level to
dehumidify without greatly reducing the room temperature. The air conditioner repeats the cycle of turning ON
and OFF automatically as shown in the chart below according to the room temperature.
20
NOTE
Room temp.
Cooling operation
T+2
°
C
Set temp. T
°
C
T–1
°
C
Monitor zone
Both the indoor and outdoor units stop.
Room temp. 15
°
C
✽
Dry A zone
Compressor :
FMI (indoor fan) :
Continuous operation.
L (low speed) / LL (very low speed) intermittent ventilation
only while the compressor is ON.
✽
Dry B zone
Compressor :
FMI (indoor fan) :
Intermittent operation (ON for 3 minutes and OFF for 9 minutes)
L (low speed) / LL (very low speed) intermittent ventilation
only while the compressor is ON.
●
Intermittent ventilation occurs by switching the indoor fan speed between L
↔
LL.
●
Dry operation does not occur when the room temperature is under 15°C, which is the monitor zone.
●
When the compressor stops, the indoor fan stops as well.
ON
ON
ON
ON
OFF
OFF
Set speed
More than
10 minutes
6 minutes
T+1
°
C
door heat exch.
oil temp.
–1
°
C
Compressor
Indoor fan
Room temp.
Thermo. OFF
Thermo. ON
Set temp. T
°
C
More than
10 minutes
More than
6 minutes
Set speed
9-3. Freeze Prevention
●
This function prevents freezing of the indoor heat exchange coil.
●
When the compressor has been running for 10 minutes or more and the temperature of the indoor heat
exchange coil falls below –1°C, the control circuit stops the compressor for at least 6 minutes. The compressor
does not start again until the temperature rises above 8°C or 6 minutes has elapsed.
