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1. Thermostat control
Thermostat turns ON or OFF by the difference between room temperature and set temperature.
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.
In AUTO the fan speed is as follows.
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, its speed becomes the set speed.
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 (2°C) from initial room temperature.
Indoor fan and outdoor fan operate in the same cycle as the compressor.
• When the room temperature is 73°F (23°C) 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 (23°C).
• 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.
High 3.15°F(1.75°C) or more
Med. between 1.8 and 3.15°F
Low
less than 1.8°F(1°C)
3.15°F
(1.75°C)
4.5°F
(2.5°C)
1.8°F
(1°C)
Fan speed
Room temperature minus
set temperature (Initial)
Room temperature minus
set temperature (During operation)
Operation time chart
Example
Thermostat
Indoor fan
Outdoor fan
Compressor
ON
ON
ON
OFF
OFF
OFF
8 minutes
1 minute
4 minutes
3 minutes
ON -3.6°F(-2°C) or more
OFF less than -3.6°F(-2°C)
-3.6°F
-1.35°F
(-2°C)
(-0.75°C)
Room temperature minus
set temperature (During operation)
Room temperature minus
set temperature (Initial)
Thermostat