To Operate The System (Without Cool/Heat Changeover Remote Control Switch); To Operate The System (With Cool/Heat Changeover Remote Control Switch); Using The Dry Program; About The Dry Program - Daikin VRV IV+ RYYQ12U7Y1B Series Installer And User Manual

16 Operation
16.2.4 To operate the system (WITHOUT cool/
heat changeover remote control switch)
1 Press the operation mode selector button on the user interface
several times and select the operation mode of your choice.
Cooling operation
Heating operation
Fan only operation
2 Press the ON/OFF button on the user interface.
Result: The operation lamp lights up and the system starts
operating.
16.2.5 To operate the system (WITH cool/heat
changeover remote control switch)
Overview of the changeover remote control switch
a FAN ONLY/AIR CONDITIONING
SELECTOR SWITCH
a
Set the switch to
operation or to
cooling operation.
b COOL/HEAT CHANGEOVER SWITCH
Set the switch to
b
for heating
To start
1 Select operation mode with the cool/heat changeover switch as
follows:
Cooling operation Heating operation
1
1
2 Press the ON/OFF button on the user interface.
Result: The operation lamp lights up and the system starts
operating.
To stop
3 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.
To adjust
For programming temperature, fan speed and air flow direction refer
to the operation manual of the user interface.
Installer and user reference guide
62
for fan only
for heating or
for cooling or to
Fan only operation
1
1
1
16.3

Using the dry program

16.3.1

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).
16.3.2 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 "16.4 Adjusting the air flow direction" on page 63
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.
16.3.3 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 "16.4 Adjusting the air flow direction" on page 63
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.
(program dry operation).
for details.
(program dry operation).
for details.
RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ heat pump
4P546228-1 – 2018.09