74
2. Indoor fan speed control
(1) Indoor fan operates at the set speed by FAN SPEED CONTROL button.
In Auto the fan speed is as follows.
Set temperature minus room temperature: 2
:
or more·················································· High
Set temperature minus room temperature: Between 0.2 and 2
:
································· Med.
Set temperature minus room temperature: less than 0.2
:
·············································· Low
0.2
:
1.7
:
2
:
4
:
Initial temperature difference
Fan speed
Difference between room
temperature and set tem-
perature during operation
(2) Cold air prevention control
1
When the compressor is not operating,
(
1
) if the temperature of room temperature thermistor RT11 is less than 19°C, the fan stops.
(
2
) if the temperature of room temperature thermistor RT11 is 19°C or more and
(
1
) if the temperature of RT12 is less than 0°C, the fan stops.
(
2
) if the temperature of RT12 is 0°C or more, the fan operates at Very Low.
2
When the compressor is operating,
(
1
) if the temperature of RT12 is 40°C or more, the fan operates at set speed.
(
2
) if the temperature of RT12 is less than 40°C and
(
1
) if heating operation starts after defrosting, the fan stops.
(
2
) if the temperature of room temperature thermistor RT11 is 19°C or less, the fan stops.
(
3
) if the temperature of room temperature thermistor RT11 is more than 19°C, the fan operates at Very Low.
NOTE : When 3 minutes have passed since the compressor started operation, this control is released regardless of the
temperature of RT11 and RT12.
1.7
:
2.0
:
Set temperature
Difference between room
temperature and set tem-
perature during operation
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 : less than 2.0
:
··············································ON
Room temperature minus set temperature : 2.0
:
or more················································OFF
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.
3. Coil frost prevention
Coil frost prevention is as same as COOL mode. (6-1.3.)
The indoor fan maintains the actual speed of the moment.
4. Low outside temperature operation
Low outside temperature operation is as same as COOL mode. (6-1.4.)
-1.0
:
-0.7
:
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 : -1.0
:
or more··············································ON
Room temperature minus set temperature : less than -1.0
:
············································OFF
Set temperature
Difference between room
temperature and set tem-
perature during operation
The system for dry operation uses the same refrigerant circuit as the cooling circuit.
The compressor and the indoor fan are controlled by the room temperature.
By such controls, indoor flow amounts will be reduced in order to lower humidity without much room temperature decrease.
6-2. DRY (
) OPERATION
(1) Press OPERATE/STOP(ON/OFF) button.
OPERATION INDICATOR lamp of the indoor unit turns on with a
beep tone.
(2) Select DRY mode with OPERATION SELECT button.
(3) The microprocessor reads the room temperature and determines
the set temperature. Set temperature is as shown on the right
chart.
35
30
25
20
15
10
:
10 15 20 25 30 35
Set temperature
Initial room temperature
Set temperature and
initial room temperature in dry mode
:
6-3. HEAT (
) OPERATION
(1) Press OPERATE/STOP(ON/OFF) button.
OPERATION INDICATOR lamp of the indoor unit turns on with a beep tone.
(2) Select HEAT mode with OPERATION SELECT button.
(3) Press TEMPERATURE buttons (TOO WARM or TOO COOL button) to select the desired temperature.
The setting range is 16 ~ 31°C.
In AUTO the fan speed is as follows.
Room temperature minus set temperature : 1.7
:
or more ········································High
Room temperature minus set temperature : Between 1 and 1.7
:
··································Med.
Room temperature minus set temperature : less than 1
:
········································Low
1.7
:
2.5
:
1
:
Initial temperature difference
Difference between room
temperature and set tempera-
ture during operation
Fan speed
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