LG PQRNC0 User Manual

P/No.: 3828A20561U Printed in Korea

After reading this manual, keep it in a place easily accessible to the user for future reference.

ENGLISH

LG

Junction Simple Wired Remote controller

LG

IMPORTANT

• Please read this installation manual completely
before installing the product.

• Installation work must be performed in
accordance with the national wiring standards
by authorized personnel only.

• Please retain this installation manual for future
reference after reading it thoroughly.

Owner's & Installation Manual

Visit us at : http://www.lgservice.com

Models: PQRNC0

ENGLISH ITALIANO ESPAÑOL FRANÇAIS DEUTSCH

2 Junction Simple Wired Remote controller

Junction Simple Wired Remote controller Owner’s & Installation Manual

TABLE OF CONTENTS

■ Safety Precautions....................................................................2

■ Part Description ........................................................................6

Junction Simple Wired remote controller....................................7

■ Junction Control System Structure.........................................9

■ Installation Method .................................................................10

■ Necessary functions before using .......................................12

Trial Operation..........................................................................12

Setting the Central-Control Address ........................................13

ESP Function ...........................................................................14

■ Main Function of Remote Controller.....................................15

On/Off Operation ......................................................................15

Cooling Operation ....................................................................16

Heating Operation ....................................................................17

Fan Speed Selection ................................................................18

Neutral / Gap setting function...................................................19

Power Failure compensation ....................................................20

Error code display function.......................................................20

Safety Precautions

Installation Manual 3

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Entrust installation of the
product to the service center
because improper installation
may cause fire, an electric
shock, explosion, and physical
injury.

Use the original parts in
order to prevent fire, an
electric shock, explosion,
and product breakdown.

Keep combustible and/or
inflammable materials away
from the product in order to
prevent fire or product
breakdown.

Do not disassemble, repair, or
modify the product at your
discretion in order to prevent fire
or an electric shock.

Do not install the product in wet
and humid areas in order to
prevent product breakdown.

Do not expose the product to the
sun in order to prevent product
breakdown.

■ Installation

Service Center

Original Parts

Safety Precautions

• The installation requires expert skills, and it should be installed by the service center or other shops specialized
in the installation and recognized by our company.

• For all the problems arising after installation by someone who has no relevant qualifications, LG will not provide
free service.

• The following safety cautions are provided to prevent unexpected dangers or losses.

■ Meanings of symbols used in this manual are as shown below.

This symbol indicates the possibility of death or serious injury.

This symbol indicates the possibility of injury or damage.

Be sure not to do.

Be sure to follow the instruction.

WARNING

WARNING

CAUTION

Safety Precautions

4 Junction Simple Wired Remote controller

Do not modify or lengthen the
power cable at your discretion.
It may cause fire or an electric
shock.

Do not place a heating device
near the product. It may cause
fire.

Do not drop water on to the
product. It may cause an electric
shock or product breakdown.

Do not place something heavy on
the power cable. It may cause fire
or an electric shock.

Do not place a heavy thing on the
product. It may cause product
breakdown.

If the product was submerged
under water, ask the service
center for instruction. It may
cause fire or an electric shock
unless you do that.

■ In-use

■ In-use

Service Center

Make sure children or senor
citizens use the product under
proper observation in order to
prevent safety accident.

Do not subject the product to
shock. It will cause product
breakdown.

Do not pick the product with a
sharp tool. It may cause
product breakdown with the
damage to its parts.

Do not clean the product with strong cleanser such
as solvent. Use soft clothes in order to prevent fire
or product deformation.

Do not touch the product with a wet hand. Do not
pull the lead cable. It may cause product breakdown
or an electric shock.

CAUTION

Installation Manual 5

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WARNING

Don't touch with the
hands while the power is
on

•

There is risk of fire or electric
shock.

Use standard
parts(connector).

•

Do not disassemble or repair
the product. There is risk of
fire or electric shock.

For electrical work, contact
the dealer, seller, a qualified
electrician, or an Authorized

Service Center.

•

Do not disassemble or repair
the product. There is risk of
fire or electric shock.

■ Installation

When the product is soaked (flooded or
submerged), contact an Authorized Service

Center.

• There is risk of fire or electric shock.

Be cautious that water could not enter the
product.

• There is risk of fire, electric shock, or product
damage.

■ Operation

Use the correctly rated
breaker or fuse.

• There is risk of fire or electric
shock.

Do not install, remove, or
re-install the unit by

yourself (customer).

• There is risk of fire, electric
shock, explosion, or injury.

For installation, always
contact the dealer or an

Authorized Service Center.

• There is risk of fire, electric

shock, explosion, or injury.

6 Junction Simple Wired Remote controller

Part Description

PQRNC0

Cooling Heating Auto Dry Fan

Defrost Preheat Out door

Slo
Lo

Med

Hi

Po

Room Temp

Total on

Central Run

FAN

SPEED

Yellow

White

3. LCD Screen

1. Connection cable for Dry contact Module
(Linked Other equipment)

2. Connection cable for Air-conditioner

Wired Remote Controller

Part Description

1. Remote control part

Installation Manual 7

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Part Description

Junction Simple Wired remote controller

PQRNC0

FAN

SPEED

Cooling Heating Auto Dry Fan

Defrost Preheat Out door

Slo
Lo

Med

Hi

Po

Room Temp

Total on

Central Run

4. Fan Speed Button

3. Temperature Control Button

1. Operation Display Panel

2. On/Off Function

Each function will be shown on the display panel for three second or so when the power is applide at first.

• When changing the group control switch, the power must be reconnected to reflect the changes.

❈

On/Off operation can be operated by central controller only on cooling mode. But we do not recommend this
method.

Group control switch

1. For individual control use

2. For group control use

Ceiling height selection switch

1. Low ceiling

2. Standard ceiling

3. High ceiling

Indoor temperature sensor
selection switch

1. Use the temperature sensor on
the remote controller

2. Use the temperature sensor on
the product.

3. Use the sensor with the lower
temperature between the
remote controller and indoor
unit.

8 Junction Simple Wired Remote controller

Part Description

2. Dry contact module part

Accessor

y

CN-POWER : AC 220V Connector
CN-CC : Remote controller Connector
CN_DRY (L) : DRY CONTROLLER
Connector
CN_DRY ( SIG ) : DRY CONTROLLER
Connector
CN_DRY (ERROR CHECK) : ERROR Check
Display Connector
CN_DRY( OPER STATE): Operation Display

Connector

1

DRY CONTACT UNIT

LG

[Top case]

[Bottom case]

2

3 4 5 6

White Connector
(10m, For Indoor)

Remote controller

(For installation, 4EA)

Yellow Connector
(10m, For Dry Contact)

(For installation, 4EA)

Dry contact - 4EA

(For assembly the case)

Dry contact

User/Installation

Manual

Installation Paper

Installation Manual 9

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Junction Control System Structure

Junction Control System Structure

< Simple Wired remote control System >

< Junction Wired remote control System >

Remote Controller

DRY CONTACT UNIT

AC power

(AC 220V~

234V)

A

Radiator

LG

Operation signal

(AC power)

Dry Contact Module

Actuator

10 Junction Simple Wired Remote controller

Installation Method

CN-REMO

LO2K

J15

LO1K

LO1D

C07D

C01K

J14

CN-DISP

CN-M CN-ZONEC

IC01A

The position of the fixing screws

< Extension Cable for Indoor unit >

< Extension Cable for Dry contact module >

Main

indoor unit

Red Yellow Brown

Main frame

Dry Contact Unit

Indoor Unit PCB

Side of

remote Controller

Side of

Indoor Unit

BlueWhite

Side of

remote Controller

Side of Dry

Contact Module

White(9pin)Yellow

DRY CONTACT UNIT

LG

White :
Extension
Cable for
Indoor unit

Yellow :
Extension Cable for
Dry contact module

AC 220V

Radiator
Or Other
equipment

1

Put the installation paper on the place and determine the
position and height of the fixing screws of the wired remote
controller.

• Refer to the printed side of the installation paper.

2

Plug the Air-conditioner connecting cable into the
indoor unit.

• Use Extension cable for connecting Remote
controller to Indoor Connect cable for
Air-conditioner

3

Plug the Dry contact Module connecting cable
into the Dry contact Modul

Installation Method

Installation Manual 11

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Installation Method

4

Remove the installation paper before installing the
remote controller so that it can fit at the right place.

*

Do not embed the remote controller into the wall.

(It

may cause the breakdown of the temperature sensor.)

*

If you want to install a number of remote controller at
the same place in a vertical line, install them at regular
intervals of 2cm. (It may cause the breakdown of the
temperature sensor.)

5

Install Dry contact Module

• Connect CN-CC with Remote controller by the cable(already linked previous step)

*

Do not install the cable with a distance of 50 m or longer. (This can cause communication error.)

*

When installing the cable, check whether the connector between the remote controller
and the product is installed properly.
The connector will not be connected when installed in opposite sides.

• Connect CN-Dry No.1 & No.4 with Actuator by the Power cable

Note : Supply the power after connecting wired remote controller.
When you need to change wired remote controller, switch off the main power and change it.
If the wired remote controller is changed before switching off the main power, the option function of the indoor unit
can't be used. (option function like "slo" fan speed selection)

Note : The power of actuator is supplied by output of power of Dry contact

Side of

remote Controller

Fixing the

remote controller

5cm

RY2

RY1

L

N

INPUT
AC 220V

N

Output AC 220V

L

CN_Dry

12 Junction Simple Wired Remote controller

Necessary functions before using

Necessary functions before using

1

If you want to set the trial operation mode, press the
Fan Speed button and None button same time for 10
seconds.

2

Then the product will begin the trial operation and the
display will be like as shown on left side picture.

3

If you want to cancel the trial operation mode, just
press the On/Off button.

4

The trail operation will be shut down automatically
after 18 minutes and system will go to the standby
mode.

Trial Operation

The trial operation is to check the installation status of the product.
The temperature will not be controlled during trial operation.
Instead the product will operate in several modes such as cooling, strong wind, comp-on Auto Swing.

* This function might not be available for Multi Product like Multi V system.

PQRCFCS0

Defrost Preheat

Out door

Room Temp

Total on

Central Run

FAN

SPEED

Installation Manual 13

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Necessary functions before using

Out doorDefrost Preheat

PQRCFCS0

FAN

SPEED

Group No.

Indoor Unit No.

FAN

SPEED

Central Run

1

If you want to set the address on the display
panel, press both temperature control buttons

(▼/▲)

same time for 10 seconds.

2

Press the temperature-increasing button to
change the group number. Press the
temperature-decreasing button to change the
indoor unit number. e.g. As shown on the left
side panel, it displays 23.
Group No. : 2
Indoor Unit No. : 3

3

Set the address by pressing both temperature
control buttons again

(▲/▼)

at the same time

for 2 seconds.

• If you connect the indoor unit to the central controller, You should set the indoor
unit address so that the central controller could recognize it.

• The Central-control address is composed of the group number and the indoor-unit
number.

Setting the Central-Control Address

Please set the address while using the central controller.

You don't need to set address if you don't use central controller.

Note : The remote controller displays 'HL' if central controller has locked the remote controller.

❈

On/Off operation can be operated by central controller only on cooling mode. But we do not recommend this
method.

14 Junction Simple Wired Remote controller

Necessary functions before using

Out door

Room Temp

Total on

Central Run

Defrost Preheat

PQRCFCS0

Lo

Med

200

100

Setting the Low wind to 210 Setting the Medium wind to 175

FAN

SPEED

1

Press the room temperature button and temperature
incrreasing button ▲ same time for 10 seconds

2

Set the volume of each fan speed(Low, Medium, Hi)
by using the temperature control button. Press the fan
speed button to select the fan speed.
The value of E.S.P can be adjusted from 1 to 255.

3

If you press the On/Off button while setting the ESP
function, it will be canceled. (The picture on the left
side is the example of setting the Hi wind to ESP 10.)

4

Press the Fan Speed button and the temperature
increasing button (▲) at the same time for 2 seconds.
Then the ESP setting will be activated after the
temperature display flashes three times.

E.S.P function is setting the volume of each fan speed. It is for the convenience of installation. It is
recommended that you should not use this function while using the remote controller.

EX)

* The E.S.P value is set at the proper value at the factory. So it is highly recommended that you should do not

change the E.S.P value at your discretion.

❈ Note : You can set the ESP only indoor is running.

ESP Function

Owner’s Manual 15

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Main Function of Remote Controller

On/Off Operation

Main Function of Remote Controller

1

On/off operation will operate if you press the
On/Off button.

2

There is no function to choose the mode.

3

setting Temperature will be displayed as
Temp code(-3, -2, -1, 0, 1, 2, 3) on the LCD

4

Press the temperature button and set the
expected temperature (18~30°C)

* Refer below table

Note : when you reset the controller Both Cooling & Heating will be off. Because the code value will be '0'.

-3 18

°C

-2 20°C

-1 22°C
024°C
126°C
228°C
330°C

Temp Code Temp.

PQRCFCS0

Defrost Preheat

FAN

SPEED

A click of the button will increase the expected temperature by 2°C.

A click of the button will decrease the expected temperature by 2°C.

16 Junction Simple Wired Remote controller

Main Function of Remote Controller

Defrost Preheat

PQRCFCS0

FAN

SPEED

1

Cooling operation could begin if you press the On/Off
button.

2

When you press the temperature button and set the
temperature code from ‘-1’ to ‘-3’, the cooling operation
will be started according to the set Temp.

3

If you want to change operation to Heating during the
cooling operation, press the Temp button and increase
the Temp code from ‘1’ to ‘3’.

4

If you press the On/Off button or set the temp code by
‘0’ during operation, the cooling and heating operation
will be stopped.

You can change the fan speed during cooling operation
when you turn on the controller after turn off, the
controller maintain the previous mode.

Cooling Operation

❈ Note : This controller is not permitted to control by Wireless remote controller.

But On/Off Operation and Changing Fan speed by wireless remote controller is possible only on cooling
mode. (it is impossible during heating mode)

❈ Please do not use this function by wireless remote controller.

❈ On/Off operation also can be operated by central controller only on cooling mode. But we do not recommend

this method.

Owner’s Manual 17

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❈ Operation Table

How to use the Mode Selection Button

Room Temp

Total on

Central Run

Defrost Preheat

PQRCFCS0

FAN

SPEED

1

Heating operation could begin if you press the On/Off
button.

2

When you press the temperature button and set the
temperature code from ‘1’ to ‘3’, the Heating operation
will be started according to the set Temp.

3

If you want to change operation to Cooling during the
Heating operation, press the Temp button and
decrease the Temp code from ‘-1’ to ‘-3’.

4

If you press the On/Off button or set the temp code by
‘0’ during operation, the heating and cooling operation
will be stopped.

❈ You can not change the fan speed during Heating

operation.

❈ Please refer to the below Operation table for more

detail.

Heating Operation

3 Heating Mode
2 Heating Mode
1 Heating Mode

0

Both Heating/Cooling OFF

(Maintain normal Temp.)

-1 Cooling Mode

-2 Cooling Mode

-3 Cooling Mode

Display (Temp. code) Contents

18 Junction Simple Wired Remote controller

How to use the Mode Selection Button

1

Select the proper fan speed which you want by
pressing the fan speed button on the remote
controller.

• If you press the fan speed button, the fan speed will
change in the order of Low → Medium → Hi.

• The initial fan speed is "Hi"

• If the product is not compatible with the fan speed

control, it will not function as per your selection.

You can easily control the fan speed.

Fan Speed Selection

❈ Fan speed "Slo" can be select optionally depend on indoor product.

PQRCFCS0

Defrost Preheat

FAN

SPEED

Room Temp

Total on

Central Run

Fan Speed Selection in Cooling Operation

Lo

Med

Hi

Owner’s Manual 19

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Defrost

PQRCFCS0

FAN

SPEED

FAN

SPEED

FAN

SPEED

FAN

SPEED

FAN

SPEED

FAN

SPEED

Press 10 Sec.
(into the mode)

Adjust the value
of Neutral

Press 2 Sec.

Adjust the value
of Gap

Press 2 Sec.
Save and Exit mode

1

Press the Room Temperature button(▲) and
None button at the same time for 10 seconds.

2

Set the value of Neutral (code ‘0’) by using
the temperature control button(▲/▼).
The value of Neutral (code ‘0’) could be
adjusted from 22°C to 26°C

3

Press the Room Temperature button(▲) and
None button at the same time for 2 seconds.

4

Set the value of Temperature Gap per code
by using the temperature control
button(▲/▼). Gap Could be adjusted 1 or 2.

5

If you press the Room Temperature button

(▲)
and None button at the same time for 2
seconds, you should out the Neutral setting
mode and controller will run as your setting.

Neutral / Gap setting function

How to use the Mode Selection Button

-3 -2 -1 0 1 2 3

26 23 24 25 26 27 28 29

25 22 23 24 25 26 27 28

24 21 22 23 24 25 26 27

23 20 21 22 23 24 25 26

22 19 20 21 22 23 24 25

Neutral

Temp.Code

value

Temp.Code value

Neutral

setting value

In case "Gap = 1"

-3 -2 -1 0 1 2 3

26 20 22 24 26 28 30 30

25 19 21 23 25 27 29 30

24 18 20 22 24 26 28 30

23 18 19 21 23 25 27 29

22 18 18 20 22 24 26 28

Neutral

Temp.Code

value

Temp.Code value

Neutral

setting value

In case "Gap = 2"

Default setting value

❈ After completing the Neutral / Gap setting,

the Temp code will be "0"

20 Junction Simple Wired Remote controller

How to use the Mode Selection Button

Power Failure compensation

1. When the power has been shut off due to power failure or other reasons, it is automatically operated as
previous operation condition with the power failure compensation function.

2. In case of power failure condition, the remote controller display is off but the settings are restored to normal
after the power recovery.

3. After power failure, the Neutral/Gap will come back default value. (Neutral = 24, Gap = 2)

❈ Note : When the power Failure has occurred on [0~3] Temperature code, Power failure compensation function

is not operated. At that time Indoor, Remote controller and Radiator maintain off condition.

Error code display function

When the error is occurred on indoor unit, the error code will be displayed on remote controller

- ‘CH’ and error code No. keep display by turns

Owner’s Manual 21

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Memo