Dry Operation; Freeze Prevention - Sanyo SAP-K71GJA Technical & Service Manual

8-2. 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.
Room temp.
T+2 °C
Set temp. T °C
T–1 °C
Room temp. 15 °C
NOTE
Intermittent ventilation occurs by switching the indoor fan speed between L
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.

8-3. 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.
T+1 ° C
Set temp. T ° C
Indoor heat exch.
coil temp.
–1 ° C
More than
10 minutes
Compressor
Indoor fan
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.
Room temp.
6 minutes
ON OFF
Set speed
More than
10 minutes
ON ON
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LL.
Thermo. OFF
Thermo. ON
More than
6 minutes
OFF ON
Set speed