Setting The Master User Interface; About Setting The Master User Interface; To Designate The Master User Interface (Vrv Dx); To Designate The Master User Interface (Ra Dx) - Daikin VRV IV-S RXYSQ4T8VB Series Installation And Operation Manual

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
▪ When the room temperature is
lower than the set
temperature.
▪ 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
cause dew or dust to settle on the ceiling or flap.
6.5

Setting the master user interface

6.5.1

About setting the master user interface

a
b c c
f
d d
a VRV IV-S Heat pump outdoor unit
b Refrigerant piping
c VRV direct expansion (DX) indoor unit
d User interface (dedicated depending on indoor unit type)
e BP box (required to connect Residential Air (RA) or Sky Air
(SA) direct expansion (DX) indoor units)
f Residential Air (RA) direct expansion (DX) indoor units
g User interface (wireless, dedicated depending on indoor
unit type)
When the system is installed as shown in the figure above, it is
necessary to designate one of the user interfaces as the master user
interface.
RXYSQ4~6T8V/YB(*)
VRV IV-S system air conditioner
4P482275-1B – 2020.10
Heating
▪ When starting operation.
▪ When the room temperature is
higher than the
temperature.
▪ At defrost operation.
.
. It may
e e
f
g g
The displays of slave user interfaces show
under centralised control) and slave user interfaces automatically
follow the operation mode directed by the master user interface.
Only the master user interface can select heating or cooling mode.
6.5.2 To designate the master user interface
(VRV DX)
In case only VRV DX indoor units are connected to the VRV system:
1 Press the operation mode selector button of the current master
user interface for 4 seconds. In case this procedure was not yet
performed, the procedure can be executed on the first user
interface operated.
Result: The display showing
set
centralised control) of all slave user interfaces connected to the
same outdoor unit flashes.
2 Press the operation mode selector button of the controller that
you wish to designate as the master user interface.
Result: Designation is completed. This user interface is
designated as the master user interface and the display
showing
vanishes. The displays of other user interfaces show
(change-over under centralised control).
6.5.3 To designate the master user interface
(RA DX)
In case only RA DX indoor units are connected to the VRV IV-S
system:
1 Stop all indoor units.
2 When the system is not operating (all indoor units thermo OFF),
you can define the master RA DX indoor unit by addressing that
unit with infrared user interface (instruct thermo ON in desired
mode).
The only way to change the master unit is by repeating the previous
procedure. A cool/heat switchover (or opposite) is only possible by
changing the operation mode of the defined master indoor unit.
7

Maintenance and service

NOTICE
NEVER inspect or service the unit by yourself. Ask a
qualified service person to perform this work.
WARNING
NEVER replace a fuse with a fuse of a wrong ampere
ratings or other wires when a fuse blows out. Use of wire
or copper wire may cause the unit to break down or cause
a fire.
CAUTION
Do NOT insert fingers, rods or other objects into the air
inlet or outlet. Do NOT remove the fan guard. When the
fan is rotating at high speed, it will cause injury.
CAUTION
After a long use, check the unit stand and fitting for
damage. If damaged, the unit may fall and result in injury.
7 Maintenance and service
(change-over
(change-over under
(change-over under centralised
Installation and operation manual
control)
11