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6.2
About operation modes
INFORMATION
Depending on the installed system, some operation modes
will not be available.
▪ The air flow rate may adjust itself depending on the room
temperature or the fan may stop immediately. This is not a
malfunction.
▪ If the main power supply is turned off during operation, operation
will restart automatically after the power turns back on again.
▪ Setpoint. Target temperature for the Cooling, Heating, and Auto
operation modes.
▪ Setback. A function that keeps the room temperature in a specific
range when the system is turned off (by the user, the schedule
function, or the OFF timer).
6.2.1
Basic operation modes
The indoor unit can operate in various operation modes.
Icon
Cooling. In this mode, cooling will be activated as
required by the setpoint, or by Setback operation.
Heating. In this mode, heating will be activated as
required by the setpoint, or by Setback operation.
Fan only. In this mode, air circulates without heating
or cooling.
Dry. In this mode, the air humidity will be lowered with
a minimal temperature decrease.
The temperature and fan speed are controlled
automatically and cannot be controlled by the
controller.
Dry operation will not function if the room temperature
is too low.
Auto. In Auto mode, the indoor unit automatically
switches between heating and cooling mode, as
required by the setpoint.
6.2.2
Special heating operation modes
Operation
Defrost
To prevent a loss of heating capacity due to frost
accumulation in the outdoor unit, the system will
automatically switch to defrost operation.
During defrost operation, the indoor unit fan will stop
operation, and the following icon will appear on the
home screen:
The system will resume normal operation after
approximately 6 to 8 minutes.
Hot start
During hot start, the indoor unit fan will stop
operation, and the following icon will appear on the
home screen:
6.2.3
Adjusting the airflow direction
When. Adjust the airflow direction as desired.
FXKQ-A
VRV system air conditioner
3P747532-1A – 2023.11
Operation mode
Description
What. The system directs the airflow differently, depending on the
user selection.
CAUTION
ALWAYS use the user interface to adjust the position of
the flaps and louvers. When the flaps and louvers are
swinging and you move them forcibly by hand, the
mechanism will break.
INFORMATION
For setting procedure of the airflow direction, see the
reference guide or the manual of the used user interface.
1 Vertical airflow
The following vertical airflow directions can be set by the user
interface:
Direction
Fixed position. The indoor unit
blows air in 1 of 5 fixed positions.
Swing. The indoor unit alternates
between the 5 positions.
Note: Recommended position of the horizontal blades (flaps) varies
according to the operation mode.
a
b
a
Cooling operation
b
Heating operation
2 Horizontal airflow
The following horizontal airflow directions can be set by the user
interface:
Direction
Fixed position. The indoor unit
blows air in 1 of 5 fixed positions.
Swing. The indoor unit alternates
between the 5 positions.
INFORMATION
When the unit is installed in a corner of a room, the
direction of the louvers should be facing away from the
wall. Efficiency will drop if a wall blocks the air.
6 Operation
Display
Display
Installation and operation manual
9
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