13 Operation
Installation and operation manual
32
RXMLQ8 + RXYLQ10~14T7Y1B*
VRV IV system air conditioner
4P543426-1 – 2018.07
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.
13.2.5 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
Set the switch to for fan only
operation or to for heating or
cooling operation.
b COOL/HEAT CHANGEOVER SWITCH
Set the switch to
for cooling or to
for heating
To start
1 Select operation mode with the cool/heat changeover switch as
follows:
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.
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.
13.3 Using the dry program
13.3.1 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).
13.3.2 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 "13.4Adjusting the air flow direction"on page32 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.
13.3.3 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.
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 "13.4Adjusting the air flow direction"on page32 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.
13.4 Adjusting the air flow direction
Refer to the operation manual of the user interface.