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Press the [F1] button to go through the op-
eration modes in the order of “Cool”, “Dry”,
“Fan”, “Auto”, and “Heat”. Select the desired
operation mode.
Cool
Dry
Fan
Auto
Heat
• Operation modes that are not available
to the connected outdoor unit models will
not appear on the display.
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The mode icon will blink when other indoor units in the same refrigerant
system (connected to the same outdoor unit) are already operated in a
different mode. In this case, the rest of the unit in the same group can
only be operated in the same mode.
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<Cool, Dry, Heat, and Auto (single set point)>
F1
F2
F3
F4
Cool
Room
Auto
Set temp.
Mode
Temp.
Fan
Fri
Press the [F2] button to decrease the preset temperature, and press the
[F3] button to increase.
•
Refer to the table on page 6 for the settable temperature range for dif-
ferent operation modes.
•
Preset temperature range cannot be set for Fan/Ventilation operation.
•
Preset temperature will be displayed either in Centigrade in 0.5- or
1-degree increments, or in Fahrenheit, depending on the indoor unit
model and the display mode setting on the remote controller.
Automatic operation (single set point)
Ŷ
According to a set temperature, cooling operation starts if the room
temperature is too hot and heating operation starts if the room
temperature is too cold.
Ŷ
During automatic operation, if the room temperature changes and
remains 1.5 °C or more above the set temperature for 3 minutes, the
air conditioner switches to cool mode. In the same way, if the room
temperature remains 1.5 °C or more below the set temperature for
3 minutes, the air conditioner switches to heat mode.
Cool mode
3 minutes (switches
from heating to cooling)
Set tempe1.5°C
Set temperature
Set temperature -1.5°C
3 minutes (switches
from cooling to heating)
Ŷ
Because the room temperature is automatically adjusted in order to
maintain a fixed effective temperature, cooling operation is performed
a few degrees warmer and heating operation is performed a few
degrees cooler than the set room temperature once the temperature is
reached (automatic energy-saving operation).
<Auto (dual set point) mode>
Preset temperature
for cooling
Preset temperature
for heating
1
The current preset temperatures will appear. Press the [F2] or [F3]
button to display the Settings screen.
Preset temperature
for cooling
Preset temperature
for heating
2
Press the [F1] or [F2] button to move the cursor to the desired
temperature setting (cooling or heating).
Press the [F3] button to decrease the selected temperature, and [F4]
to increase.
• Refer to the table on page 6 for the settable temperature range for
different operation modes.
• The preset temperature settings for cooling and heating in the
Auto (dual set point) mode are also used by the Cool/Dry and Heat
modes.
• The preset temperatures for cooling and heating in the Auto (dual
set point) mode must meet the conditions below:
• Preset cooling temperature is higher than preset heating temperature.
• The minimum temperature difference requirement between cooling and
heating preset temperatures (varies with the models of indoor units
connected) is met.
* If preset temperatures are set in a way that does not meet the minimum
temperature difference requirement, both preset temperatures will
automatically be changed within the allowable setting ranges.
Navigating through the screens
• To return to the Main screen ...... [RETURN] button
<Auto operation (dual set point) mode>
When the operation mode is set to the Auto (dual set point) mode, two
preset temperatures (one each for cooling and heating) can be set.
Depending on the room temperature, indoor unit will automatically
operate in either the Cool or Heat mode and keep the room temperature
within the preset range.
The graph below shows the operation pattern of indoor unit operated in
the Auto (dual set point) mode.
Operation pattern during Auto (dual set point) mode
HEAT
COOL
HEAT
COOL
Preset temp.
(COOL)
Preset temp.
(HEAT)
Room
temperature
The room temperature
changes corresponding
to the change in the
outside temperature.
F1
F2
F3
F4
Cool
Room
Auto
Set temp.
Mode
Temp.
Fan
Fri
Cool
Room
28.5
Auto
Set temp.
Mode
Temp.
Fan
Fri
28.5
Example display
(Centigrade in 0.5-degree increments)
