LG PQRNC0 Quick start guide

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

2Junction 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
ENGLISH
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.
WARNING
CAUTION
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

Safety Precautions
4Junction 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
ENGLISH
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.

6Junction 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
ENGLISH
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.

8Junction Simple Wired Remote controller
Part Description
2. Dry contact module part
Accessory
User/Installation
Manual
Installation Paper
Dry contact
(For installation, 4EA)
Remote controller
(For installation, 4EA)
Yellow Connector
(10m, For Dry Contact)
White Connector
(10m, For Indoor)
Dry contact - 4EA
(For assembly the case)
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
DRY CONTACT UNIT
LG
[Top case]
1
2
3 4 5 6
[Bottom case]

Installation Manual 9
ENGLISH
Junction Control System Structure
Junction Control System Structure
DRY CONTACT UNIT
LG
AC power
(AC 220V~
234V)
Actuator
Operation signal
(AC power)
A
Remote Controller
Dry Contact Module
Radiator
< Simple Wired remote control System >
< Junction Wired remote control System >

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
ENGLISH
Fixing the
remote controller
Side of
remote Controller
L
N
N
L
RY1 RY2
INPUT
AC 220V
CN_Dry
Output AC 220V
5cm
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

12 Junction Simple Wired Remote controller
Necessary functions before using
Necessary functions before using
Out door
Room Temp
Total on
Central Run
Defrost Preheat
PQRCFCS0
FAN
SPEED
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.

Installation Manual 13
ENGLISH
Necessary functions before using
Out doorDefrost Preheat
PQRCFCS0
FAN
SPEED
Group No.
Indoor Unit No.
FAN
SPEED
Central Run
1If you want to set the address on the display
panel, press both temperature control buttons
(▼/▲)
same time for 10 seconds.
2Press 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
3Set 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
ENGLISH
Main Function of Remote Controller
Defrost Preheat
PQRCFCS0
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.
FAN
SPEED
On/Off Operation
Main Function of Remote Controller
1On/off operation will operate if you press the
On/Off button.
2There is no function to choose the mode.
3setting Temperature will be displayed as
Temp code(-3, -2, -1, 0, 1, 2, 3) on the LCD
4Press 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.

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
ENGLISH
❈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
0Both 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
Room Temp
Total on
Central Run
Defrost Preheat
PQRCFCS0
FAN
SPEED
Hi
Med
Fan Speed Selection in Cooling Operation
Lo
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.

Owner’s Manual 19
ENGLISH
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"