Mitsubishi Electric CITY MULTI PLFY-WLMU-E Serie Manuel D'utilisation page 9

3. Operation
3.2. Mode Selection
Fri
Each pressing of the [F1] button cycles
through the following operation modes.
83
Room
Select the desired operation mode.
Cool Set temp. Auto
83
Mode Temp. Fan
F1 F2 F3 F4
ON
RETURN SELECT
MENU
OFF
HOLD
• Operation modes that are not available
to the connected outdoor unit models will
not appear on the display.
What the blinking mode icon means
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.
3.3. Temperature setting
<Cool, Drying, Heat, and Auto (single set point)>
Fri
Operation mode
83
Room
Room temperature (Refer to the Installation Manual.)
Cool Set temp. Auto
83
Mode Temp. Fan
F1 F2 F3 F4
ON
RETURN SELECT
MENU
OFF
HOLD
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)
■
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.
■
During automatic operation, if the room temperature changes and
remains 1.5 °C (3 °F) 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 (3 °F) 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)
3 minutes (switches
from cooling to heating)
■
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).
Cool Drying Fan
Auto Heat Setback
Set temperature +1.5 °C (+3 °F)
Set temperature
Set temperature -1.5 °C (-3 °F)
<Auto (dual set point) mode>
79
Preset temperature 83
for cooling
68
Preset temperature
for heating
F1 F2
RETURN SELECT
MENU
1 The current preset temperatures will appear. Press the [F2] or [F3]
button to display the Settings screen.
83 83
Preset temperature
for cooling
68 68
Preset temperature
for heating
RETURN
F1 F2
RETURN SELECT
MENU
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/Drying 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
Preset temp.
(COOL)
Preset temp.
(HEAT)
HEAT COOL
Setback mode
Room temperature is controlled to stay within the set temperature range
that is specified for the Setback mode. By leaving sufficient temperature
differential between the set temperature for cooling (upper limit) and
heating (lower limit), it is possible to keep the room temperature within
the specified range without overworking the air conditioners.
This setting will be especially effective during periods of non-occupancy.
Operation pattern during Setback mode
Set temp.
(SETBACK_COOL)
Set temp.
(SETBACK_HEAT)
HEAT
F3 F4
ON
OFF
HOLD
F3 F4
ON
OFF
HOLD
The room temperature
changes corresponding
to the change in the
outside temperature.
Room
temperature
HEAT COOL
The room temperature
changes corresponding
to the change in the
Room
outside temperature.
temperature
COOL HEAT COOL
en
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