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8-5. 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.
● Intermittent ventilation occurs by switching the indoor fan speed between L ↔ LL.
● Dry operation does not occur when the room temperature is under 59°F (15°C), which is the Monitor
Zone.
● When the compressor stops, the indoor fan stops as well.
NOTE
Room temp.
T + 4°F (2°C)
T – 2°F (1°C)
Room temp.
59°F (15°C)
Set temp. T°C
Cooling operation
* Dry A Zone
Compressor: Continuous operation
FMI (indoor fan): L (low speed)/LL (very low speed) intermittent ventilation only while the compressor is ON.
* Dry B Zone
Compressor: Intermittent operation (ON for 3 minutes and OFF for 9 minutes)
FMI (indoor fan): L (low speed)/LL (very low speed) intermittent ventilation only while the compressor is ON.
Monitor Zone
Both the indoor and outdoor units stop.