Operation Manual

7
3.Operation
■
Operationstatusmemory
Remote controller setting
Operation mode Operation mode before the power was turned off
Preset temperature Preset temperature before the power was turned off
Fan speed Fan speed before the power was turned off
■
Settablepresettemperaturerange
Operation mode Preset temperature range
Cool/Dry 19 – 30 °C, 67 – 87 °F
Heat 17 – 28 °C, 63 – 83 °F
Auto 19 – 28 °C, 67 – 83 °F
Fan/Ventilation Not settable
3.2.ModeSelection
Press the [F1] button to go through the
operation modes in the order of “Cool”,
“Dry”, “Fan”, “Auto”, and “Heat”. Select the
desired operation mode.
• Operation modes that are not available to
the connected indoor unit models will not
appear on the display.
Informationformultisystemairconditioner(Outdoor
unit:MXZseries)
►Multisystemairconditioner(Outdoorunit: MXZseries)can
connecttwoormoreindoorunitswithoneoutdoorunit.According
tothecapacity,2ormoreunitscanoperatesimultaneously.
• When you try to operate 2 or more indoor units with 1 outdoor unit
simultaneously, one for the cooling and the other for heating, the
operation mode of the indoor unit that operates earlier is selected.
The other indoor units that will start the operation later cannot operate,
indicating an operation state in blinking.
In this case, please set all the indoor units to the same operation
mode.
• There might be a case that the indoor unit, which is operating in “Auto”
mode. Cannot change over to the operating mode “Cool”/“Heat” and
becomes a state of standby.
• When indoor unit starts the operation while the defrosting of outdoor
unit is being done, it takes a few minutes (max. about 15 minutes) to
blow out the warm air.
• In the heating operation, though indoor unit that does not operate may
get warm or the sound of refrigerant owing may be heard, they are
not malfunction. The reason is that the refrigerant continuously ows
into it.
Automaticoperation
■
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 2 °C (4 °F) or more above the set temperature for 15 minutes,
the air conditioner switches to cooling mode. In the same way, if
the room temperature remains 2 °C (4 °F) or more below the set
temperature for 15 minutes, the air conditioner switches to heating
mode.
Cooling mode 15 minutes (switches from
heating to cooling)
Set temperature +2 °C (+4 °F)
Set temperature
15 minutes (switches
from cooling to heating)
Set temperature -2 °C (-4 °F)
Cool Dry Fan
Auto Heat
Whattheblinkingmodeiconmeans
The mode icon will blink when other indoor units in the same refriger-
ant 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,Dry,Heat,andAuto>
F1 F2 F3 F4
83
F
83
F
Cool
Room
AutoSet temp.
Mode Temp. Fan
Fri
Cool
Room
AutoSet temp.
Mode Temp. Fan
Fri
84
F
84
F
Example display
F1 F2 F3 F4
83
F
83
F
Cool
Room
AutoSet 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 7 for the settable temperature range for
different 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.
BH79A345H01_en.indd 7 2018/05/25 14:59:38