6 Operation
Installation and operation manual
9
FXHQ-A
VRV system air conditioner
3P668115-3E – 2022.11
Icon
Operation mode
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
Description
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
The following airflow directions can be set:
▪
Up and down direction
(horizontal blades): Using user interface
(fixed position or swing)
▪
Left and right direction
(vertical blades): Manually (fixed position
only)
a
b
b
a
Horizontal blades (up and down direction)
b
Vertical blades (left and right direction)
Up and down airflow direction setting
INFORMATION
For setting procedure of the airflow direction, see the
reference guide or the manual of the used user interface.
When the operation stops, the horizontal blades at the air outlet
close automatically.
The following airflow directions can be set:
Direction
Display
Fixed position
. The indoor unit
blows air in 1 of 5 fixed positions.
Swing
. The indoor unit alternates
between the 5 positions.
Note:
The recommended position of the horizontal blades (flaps)
varies according to the operation mode.
a
b
a
Cooling operation
b
Heating operation
WARNING
NEVER touch the air outlet or the horizontal blades while
the swing flap is in operation. Fingers may become caught
or the unit may break down.
NOTICE
Avoid operating in the horizontal direction. It may cause
dew or dust to settle on the ceiling or flap.
Left and right airflow direction setting
The left and right airflow direction can be set only manually in fixed
position.
Make adjustments only after stopping the horizontal blade in order to
avoid injury and damage to the appliance. Set both groups of vertical
blades in a way so airflows do not cross; otherwise condensate may
drip.
a
a
b
a
a
b
a
Airflow
b
Vertical blades
