12 Operation
Installation and operation manual
27
RKXYQ5T7Y1B
VRV IV compressor unit for indoor installation
4P408443-1 – 2015.07
To adjust
For programming temperature, fan speed and air flow direction refer
to the operation manual of the user interface.
12.3
Using the dry program
12.3.1
About the dry program
▪ The function of this program is to decrease the humidity in your
room with minimal temperature decrease (minimal room cooling).
▪ The micro computer automatically determines temperature and
fan speed (cannot be set by the user interface).
▪ The system does not go into operation if the room temperature is
low (<20°C).
12.3.2
To use the dry program (WITHOUT cool/
heat changeover remote control switch)
To start
1
Press the operation mode selector button on the user interface
several times and select
(program dry operation).
2
Press the ON/OFF button of the user interface.
Result:
The operation lamp lights up and the system starts
operating.
3
Press the air flow direction adjust button (only for double-flow,
multi-flow, corner, ceiling-suspended and wall-mounted). Refer
to
"12.4 Adjusting the air flow direction" on page 27
for details.
To stop
4
Press the ON/OFF button on the user interface once again.
Result:
The operation lamp goes out and the system stops
operating.
NOTICE
Do not turn off power immediately after the unit stops, but
wait for at least 5 minutes.
12.3.3
To use the dry program (WITH cool/heat
changeover remote control switch)
To start
1
Select cooling operation mode with the cool/heat changeover
remote control switch.
1
1
2
Press the operation mode selector button on the user interface
several times and select
(program dry operation).
3
Press the ON/OFF button of the user interface.
Result:
The operation lamp lights up and the system starts
operating.
4
Press the air flow direction adjust button (only for double-flow,
multi-flow, corner, ceiling-suspended and wall-mounted). Refer
to
"12.4 Adjusting the air flow direction" on page 27
for details.
To stop
5
Press the ON/OFF button on the user interface once again.
Result:
The operation lamp goes out and the system stops
operating.
NOTICE
Do not turn off power immediately after the unit stops, but
wait for at least 5 minutes.
12.4
Adjusting the air flow direction
Refer to the operation manual of the user interface.
12.4.1
About the air flow flap
Double flow+multi-flow units
Corner units
Ceiling suspended units
Wall-mounted units
For the following conditions, a micro computer controls the air flow
direction which may be different from the display.
Cooling
Heating
▪ When the room temperature is
lower
than
the
set
temperature.
▪ When starting operation.
▪ When the room temperature is
higher
than
the
set
temperature.
▪ At defrost operation.
▪ When operating continuously at horizontal air flow direction.
▪ When continuous operation with downward air flow is performed
at the time of cooling with a ceiling-suspended or a wall-mounted
unit, the micro computer may control the flow direction, and then
the user interface indication will also change.
The air flow direction can be adjusted in one of the following ways:
▪ The air flow flap itself adjusts its position.
▪ The air flow direction can be fixed by the user.
▪ Automatic
and desired position .
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
▪ The movable limit of the flap is changeable. Contact
your dealer for details. (only for double-flow, multi-flow,
corner, ceiling-suspended and wall-mounted).
▪ Avoid operating in the horizontal direction
. It may
cause dew or dust to settle on the ceiling or flap.
12.5
Setting the master user interface
12.5.1
About setting the master user interface
d
d
c
c
a
b
VRV DX
VRV DX
VRV DX
EKEXV
AHU
d
d
1
2
1
In case of VRV DX indoor units
