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-1.8 deg.
-1.3 deg.
1. Thermostat control
Thermostat is ON or OFF by difference between room temperature and set temperature.
Initial temperature difference Thermostat
Room temperature minus set temperature : -1.8 degrees or more·····································ON
Room temperature minus set temperature : less than -1.8 degrees···································OFF
Set temperature
Difference between room
temperature and set temper-
ature during operation
2. Indoor fan speed control
Indoor fan operates at the set speed by FAN SPEED CONTROL button.
When thermostat OFF (compressor OFF) fan speed becomes Very Low.
4. Coil frost prevention
Coil frost prevention is as same as COOL mode. (2-1.3.)
The indoor fan maintains the actual speed of the moment. However ,when coil frost prevention works while the compressor
is not operating it’s speed becomes the set speed.
In AUTO the fan speed is as follows.
Room temperature minus set temperature : 3.1 degrees or more·······························High
Room temperature minus set temperature : Between 1.8 degrees and 3.1 degrees
···
Med.
Room temperature minus set temperature : less than 1.8 degrees·····························Low
3.1 deg.
4.5 deg.
1.8 deg.
Initial temperature difference
Fan speed
Operation time chart
Example
Thermostat
Indoor fan
Outdoor fan
Compressor
ON
ON
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
OFF
OFF
OFF
3. The operation of the compressor and indoor/ outdoor fan
Compressor operates by room temperature control and time control.
Set temperature is controlled to fall 4°F from initial room temperature.
Indoor fan and outdoor fan operate in the same cycle as the compressor.
•When the room temperature is 73°F or over:
When the thermostat is ON, the compressor repeats 8 minutes ON and 3 minutes OFF.
When the thermostat is OFF, the compressor repeats 4 minutes OFF and 1 minute ON.
•When the room temperature is under 73°F.
When the thermostat is ON, the compressor repeats 2 minutes ON and 3 minutes OFF.
When the thermostat is OFF, the compressor repeats 4 minutes OFF and 1 minute ON.
8 minutes
1 minute
4 minutes
3 minutes
Difference between room
temperature and set temper-
ature during operation ( T)
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