Service manual
52
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
3-2. 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
:
3-3. 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.
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. (3-1.3.)
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. (3-1.4.)
-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 tem-
perature.
By such controls, indoor flow amounts will be reduced in order to
lower humidity without much room temperature decrease.
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 ( T)
Fan speed
NOTE : Even when the damper is closed while cooling or drying operation is performed, the lower fan may rotate
intermittently.
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