Daikin VRV IV i Series, Installation And Operation Manual

6 Operation

Installation and operation manual

11

RK RKXYQ8T7Y1B
VRV IV compressor unit for indoor installation
4P499900-1B – 2021.12

To start

1

Select operation mode with the cool/heat changeover switch as
follows:

Cooling operation

Heating operation

Fan only operation

1

1

1

1

1

1

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.

6.3

Using the dry program

6.3.1

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).

6.3.2

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 

"6.4 Adjusting the air flow direction"

 [

4

 11] 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.

6.3.3

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 

"6.4 Adjusting the air flow direction"

 [

4

 11] 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.

6.4

Adjusting the air flow direction

Refer to the operation manual of the user interface.

6.4.1

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.