LG LB-R0551QC User manual

IMPORTANT
Please read through this manual. It contains valuable
information about your air conditioner. This manual may
help save time and money by explaining proper product
maintenance and preventing improper use.
PRECAUTIONS
Pay close attention to precautions in order to prevent
potential hazards and damage from misuse or improper
installation. LG is not responsible for any damages caused
by misuse of the product.
LG
Ceiling Duct-Type Air Conditioner
OWNER'S MANUAL
LG
LG Electronics India Pvt. Ltd.
Regd. Office : A-27, Mohan Cooperative Industrial
Estate, Mathura Road, New Delhi-110044.
www.lg.com
MFL37347406

F or Your Records
R
ead This Manual
CAUTION
3
Ceiling Duct-Type Air Conditioner Owner’s Manual
TABLE OF CONTENTS
Write the model and serial numbers here:
Model #
Serial #
You can find them on a label on the side of each unit.
Dealer's Name
Date Purchased
Inside you will find many helpful hints on how to use
and maintain your air conditioner properly. Just a little
preventive care on your part can save you a great
deal of time and money over the life of your air
conditioner.
You'll find many answers to common problems in the
chart of troubleshooting tips. If you review our chart of
Troubleshooting Tips first, you may not need to call
for service at all.
• Contact the authorized service technician for repair
or maintenance of this unit.
• Contact the installer for installation of this unit.
• The air conditioner is not intended for use by young
children or invalids without supervision.
• Young children should be supervised to ensure that
they do not play with the air conditioner.
• When the power cord is to be replaced, replacement
work shall be performed by authorized personnel
only.
• Installation work must be performed in accordance
with the national wiring standards by authorized
personnel only.
1. Safety Precautions
2. Operating Instructions
3. Care and Maintenance
4. Before you call for service

4
WARNING
CAUTION
Never Do This
Always Do This
WARNING
WARNING
Precautions
Safety
Precautions
To prevent injury and property damage, follow these instructions.
Incorrect operation due to ignoring instructions will cause harm or damage, the seriousness of which is
indicated by the following symbols.
n Do not install, remove and reinstall the unit by yourself.
• Improper installation will cause water leakage, electrical shock, or fire. Please consult
authorized dealer or specialist for the installation work. Please note fault caused by improper
installation is not covered by warranty.
• Unit must be installed in an easily accessible area. Any additional cost required to hire a
special equipment to service the unit will be the responsibility of the customer.
This symbol shows the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to property.
Installation precautions

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Operating Instructions
Operating
Instructions
10
Name and Function of Remote Controller
OPERATION DISPLAY SCREEN
Displays the command / function
set by the user on the remote.
ROOM TEMPERATURE SETTING
BUTTONS
Used to select the room temperature.
INDOOR FAN SPEED SELECTOR
\BUTTON
Used to select fan speed low, medium
and high.
START/STOP BUTTON
Used to turn on/off the unit.
OPERATION MODE SELECTION
BUTTON
Used to select the operation mode.
WIRELESS REMOTE CONTROLLER
RECEIVER
Optional feature - some functions may
not work from wireless remote
AIRFLOW BUTTON
Optional feature - used to select the
wind direction
SUB FUNCTION BUTTON
Used to select the sub-function
FUNCTION SETTING BUTTON
Used to select the add-on function
VENTILATION BUTTON
Used to on/off the ventilation
RESERVATION
Used to set on timer, off timer,
holiday & weekly programming.
UP, DOWN, LEFT, RIGHT BUTTON
Used with different functions to change
the parameter.
ROOM TEMPERATURE BUTTON
Used to check the indoor temperature.
SET/CANCEL BUTTON
Used to set/cancel the command.
EXIT BUTTON
Used to exit from the command.

11
IDU Fan Speed Provision
Capacity
66K BTU/h 3 Speed (Hi, Low and Medium)
IDU Fan Speed
Installer Setting Code Table
1) General air-conditioner product
Some contents may not be displayed depending on the product function
No. Function Code Value
1 Test Run 01 01:Set
2 Address Setting 02 00~FF : Address
<ESP Step> <ESP Value> <Example>
01:VeryLow 0 ~ 255
02:Low
3 E.S.P. Value 03 03:Med
04:High
05:Very High
01:Remo
4 Thermistor 04 02:Indoor
03:2TH
01:Med
02:Low
5 Ceiling Height 05 03:High
04:Very High
01:V-H
02:F-H
6 Static Pressure 06 03:V-L
04:F-L
7 Master Setting 07 00:Slave
01:Master
8 Override Setting 08 00:Slave
01:Master
9 Dry Contact 09 00:Auto-Off
01:Auto-On
10 Release 3 Min.
10 01:Set
Delay
11 Zone State 11 01:Variable
02:Fixed
12 Celsius 12 00:Celsius (Optimized only for U.S.A)
Fahrenheit Switching 01:Fahrenheit
13 Zone Type 13 00:Zone Controller
01:Damper Controller
14 Zone Number 14 02~04(Zone number)
15 Plasma 20
16 Electric heater 21
17 Humidifier 22 00: Not Installed
18 Elevation Grill 23 01: Installed
19 Ventilation Kit 24
20 AUX Heat 25
Function Code ESP valueESP step

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Standard Operation - Standard Cooling
Press button to turn on the
indoor.
1
Press button to select
Cooling operation mode.
2
Adjust the desired temperature
by pressing buttons.
Press button to check the
Room temperature.
3
Owner's instruction
Setting Temp Range : 18˚C~30˚C (64˚F~86˚F)
It cools the room by comfortable and clean air.

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Standard Operation - Power Cooling (Optional)
Press button to trun on the
indoor.
1
Press button to select
cooling operation mode.
2
Press button continuously
until 'Po' displayed.
3
Power cooling can be used to cool the room quickly in hot summer.
It supplies warm wind to the indoor
Standard Operation - Heating Mode (Optional)
Press button to turn on the
indoor.
1
Press button to select
Heating mode.
(To check the indoor temperature,
press the room temperature button.)
2
Adjust the desired temperature
by pressing buttons.
When setting the desired
temperature lower than room
temperature, there is only
ventilation wind.
3
What is Power Cooling?
• Desired temperature: Po (actually 18°C)
• Wind flow: power wind
• Wind direction: fix to air-cooling position
Partial product has no power air-cooling function.
•Heating drive only operates at the cooling and heating model.
•Heating doesn't operate at cooling exclusive model.
It make room temperature
drop fast by running
}

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Standard Operation - Dehumidification Mode
Press button to turn on the
indoor.
1
Press button to select
Dehumidification mode.
The temperature setting can not be
adjusted during operation this mode.
2
Press the in order of low
medium high
(The initial wind powerfulness of
humidity removal drive is 'low'.)
3
Press button to turn on the
indoor.
1
Press button to select Fan
Mode.
2
Every time pressing button, you
can select in order of low
medium high
3
Standard Operation - Fan Mode
This mode dehumidification without overcooling.
It blows the air as it is in the indoor, not the cold wind.
•In rainy season or high humidity climate, it is possible to operate simultaneously dehumidifier and
cooling mode to remove humidity effectively.

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Press button to turn on the
indoor.
1
Press button to select
Artificial intelligence Mode.
2
You can adjust
the temperature
as the picture on
the right for
cooling and
heating model.
3
For the case of
cooling exclusive,
as the picture on
the right, you can
adjust the
temperature from
hot to cold, from
"-2" to "2" based
on "00".
4
When cold
When cool
When appropriate
When warm
When hot
Standard Operation - Auto Operation Mode
During operating Auto Operation mode :
• We can use the FAN SPEED button
• We can change manually to other operation mode.

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Standard Operation - Temperature Setting/Room Temperature Check
We can simply adjust the desired
temperature.
• Press the buttons to adjust the
desired temperature.
: Increase 1°C or 2°F per one time
pressing
: Decrease 1°C or 2°F per one time
pressing
Cooling operation:
- The cooling mode doesn't work if
desired temperature is higher than room
temperature Please lower the desired
temperature.
Heating operation:
- The heating mode doesn't work if desired
temperature is lower than room
temperature Please increase the desired
temperature.
1
Whenever press button, the room
temperature will be displayed within 5
seconds.
After 5 seconds, it turns to display the
desired temperature.
Because of location of remote controller,
the real room temperature and the this
displayed value can be different
1
Temperature Setting
Room Temperature Check
• For air-cooling drive, from 18°C to 30°C, and for heating drive, from 16°C to 30°C, you can select
desired temperature.
• 5°C is proper for the difference between room and outside temperature.
• Room temp: Indicate the current room
temperature.
• Set temp: Indicate the temperature that user
want to set.
Depend on what kind of controller, the desired
temperature can be adjusted at 0.5°C or 1°F.

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Power saving air-cooling function is the function to improve use's comfortableness and power saving
capacity by adjusting desired temperature while running air-cooling
Sub function - Energy-Saving Cooling Operation (Optional)
Repeatedly pressing button
until icon flash.
1
Operate or cancel Energy-Saving
function by pressing
button.
(To cancel power saving function,
you move to power saving menu by
pressing button, and then if pressing
button, power saving icon disappears
and the function is cancelled. )
2
Press button to exit.
After setup, it automatically
gets out of setup mode if there
is no button input for 25
seconds.
When exiting without pressing set
button, the manipulated value is not
reflected.
3
• Power saving function is possible to setup only when running air-cooling.
• Power saving function might not be operated at the partial product.

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It is the function to use preventing children or others from careless using.
Function setting - Child Lock
Press button repeatedly until
the is flashing.
1
If moving to 'setup' icon area by
using button, 'setup' icon
blinks, and child lock function is
setup if pressing button at
that time.
2
When cancelling lock function, if moving
to 'cancel' icon by pressing button
and then, pressing button, child lock
function is cancelled.
3
Press button to exit.
After setup, it automatically gets out of
setup mode if there is no button input
for 25 seconds.
When exiting without pressing set
button, the manipulated value is not
reflected.
4
This function is to clear the indicator of indoor filter cleaning.
Function setting - Filter Sign Clear
Press button repeatedly
until the is flashing.
1
When the is flashing, press
the to clear this display
2
• When filter is covered by dust, it will reduce cooling/heating efficiency and consume more
electric power. Therefore. do clean the filter whenever cleaning time is expired.
Filter cleaning indication is automatically cancelled without the separate cancellation after certain
period of time.

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Function setting - Current Time
Please press function setup
button. If pressing function setup
button repeatedly, it moves to
time setup menu. ‘Time setup’
icon is indicated at that time and date
blinks at current time indication area.
Ex) Changing Current Time as
'Monday / AM 10:20'.
1
Press key to adjust the current
day.
2
Press key to move to AM/ PM setting
mode (the 'AM/ PM segment will flash).
3
Setting AM/ PM value by
pressing button.
4
Press button to move to 'Hour'
setting mode. (the 'Hour' segment will
flash)
5
Setting Hour value by pressing
button.
6
This Procedure sets the current time and day of the week.

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Press button to move to 'Minute'
setting mode. (the 'Minute' segment will
flash)
7
Setting Minute value by pressing
button.
8
Press button to finish.
9
In the process, press
button to release and exit
from setting mode.
(In case of exit with
incomplete information, it will return to
the previous setting)
When exiting without pressing set
button, the manipulated value is not
reflected.
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