Using The Dry Program; About The Dry Program; To Use The Dry Program (Without Cool/Heat Changeover Remote Control Switch); To Use The Dry Program (With Cool/Heat Changeover Remote Control Switch) - Daikin VRV IV RYYQ10T7Y1B Series Installation And Operation Manual

12 Operation
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
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 38
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
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 38
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.
Installation and operation manual
38
(program dry operation).
for details.
(program dry operation).
for details.
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
▪ 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.
12.5

Setting the master user interface

12.5.1

About setting the master user interface

a
b b c
d d
e e
f
a VRV heat pump outdoor unit
b VRV direct expansion (DX) indoor unit
c BP box (required to connect Residential Air (RA) or Sky Air
(SA) Direct Expansion (DX) indoor units)
d Residential Air (RA) Direct Expansion (DX) indoor units)
Heating
▪ When starting operation.
▪ When the room temperature is
higher than the
temperature.
▪ At defrost operation.
.
. It may
f
RYYQ+RYMQ+RXYQ8~20T7Y1B
VRV IV system air conditioner
4P370473-1C – 2016.07
set