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Basic Operations - Operation screen (GROUP screen)
Basic Operations - Operation screen (GROUP screen)
Auto (dual set point) and Setback modes:
When the operation mode is set to the Auto (dual set point) mode or the Setback mode, two set
temperatures (one each for cooling and heating) can be set. Depending on the room temperature, indoor
unit will automatically operate in either the cooling or heating mode and keep the room temperature
within the preset range.
Differences between the two modes
•
Auto (dual set point) mode
The set temperatures that are specified for the Cool/Drying mode and the Heat mode will be used to
automatically control the room temperature to stay within the set temperatures. This mode is especially
effective during the in-between seasons, when the temperature difference between the highest and the
lowest is large and both heating and cooling modes are used within the same day.
Set temp.
(Cool)
Operation pattern during Auto (dual set point) mode
Heat
The room temperature
changes corresponding
to the change in the
outside temperature.
Set temp.
(Heat)
Heat
Cool
Cool
Room
temperature
•
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.
Heat
Heat
Cool
Cool
Set temp.
(Setback_Cool)
Operation pattern during Setback mode
The room temperature
changes corresponding
to the change in the
outside temperature.
Set temp.
(Setback_Heat)
Room
temperature
Operation screen (GROUP screen)
Operating the Air conditioning unit group • Air To Water (PWFY) group
Air conditioning unit group
Air To Water (PWFY) group
1
2
5
3
4
ON/OFF operation
Touching
3
allows the indoor units in the displayed group to start/stop.
When interlocked ventilation units (LOSSNAY) are connected, the ventilation units work in conjunction with
indoor units. ON:
(Green) OFF:
(Black)
Mode
(useable only while the unit is in operation)
Touch
2
to access the modes in order of "Cooling, Drying, Fan, Auto*
1
, Heating, and Setback*" or
"Heating, Heating ECO, Hot water, Anti-Freeze, and Cooling**".
The selected mode will appear in the area labeled
1
.
(*: For Air conditioning unit groups, **: For Air To Water (PWFY) groups)
*1 Depending on the indoor unit model, either one or two set temperatures (single or dual set point(s)) can
be set for Auto mode.
Air conditioning unit group
* Refer to P51 for Auto mode cooling/heating settings.
* To operate an indoor unit in the heating (cooling) mode
while the indoor unit is already operating in the opposite
mode, the operation mode cannot be changed until all of
the indoor units operate in the same mode or stop. In this
case, the mode
1
will blink.
* Available mode varies depending on the model.
Modes that are unavailable do not appear.
* The operation mode which is restricted by this controller or
other controllers cannot be selected.
Auto heating
display
Auto cooling
display
Air To Water (PWFY) group
