LG JBNQ18GB2A2 User manual

P/No. : MFL62760204_v1
MFL62760204
TYPE : LO-STATIC CEILING DUCT TYPE AIR CONDITIONER
Please read this manual carefully before operating
your set and retain it for future reference.
For Single LO-Static duct models
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CUSTOMER CARE
12 x 7
AIR
CONDITIONER

F or Your Records
R
ead This Manual
CAUTION
Low Static Hide Away 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.
2
Page no.
1. Safety Precautions
2. Operating Instructions
3. Care and Maintenance
4.
Before you call for service
3
5
14
19

WARNING
WARNING
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.
Do not damage or use an
unspecified power cord.
• It will cause electrical shock or fire.
• If the supply cord is damaged, it must be
replaced by the manufacturer or its
service agent or a similarly qualified
person in order to avoid a hazard.
Do not operate switches
with wet hands.
• It may cause electrical shock.
Plug in the power plug
properly.
• Otherwise, it will cause
electrical shock or fire due to
heat generation.
Do not operate or stop the
unit by inserting or pulling
out the power plug.
• It will cause electrical shock or
fire due to heat generation.
Do not insert your finger or
stick, etc. into the air inlet/air
outlet.
• Since the fan rotates at high
speed, this may cause an injury
or damage the unit.
Do not expose the skin to
cool air directly for a long
time.
• This could damage your health.
When an abnormality (smell of burning, etc)
occurs, stop the air conditioner, and
turn off the breaker.
• If the unit continues to be operated in an abnormal
condition, it may cause a fire, trouble, etc. In this
case, consult your dealer.
Repair or relocation should not be done by the
customer.
• If this is done in correctly, it may cause a fire,
electric shock, injury by dropping of the unit, water
leakage, etc. Consult your dealer.
This symbol shows the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to property.
Installation precautions
3

CAUTION
CAUTION
CAUTION
CAUTION
Do not clean the air
conditioner with water.
l Water may enter the unit and
degrade the insulation. It may
cause an electric shock.
Ventilate well when used
together with a stove, etc.
l An oxygen shortage may occur.
When the unit is to be
cleaned, switch off, and turn
off the breaker.
l Since the fan rotates at high
speed during operation, it may
cause an injury.
Do not put a stove, etc.
where is exposed to direct
air flow.
l It may cause imperfect
combustion.
When the unit is not going to
be used for a long time, turn
off the breaker.
l It may cause an injury.
Do not step on the outdoor
unit and do not put anything
on it.
l It may cause an injury through
dropping or falling down.
Do not operate for a long
time in high humidity, e.g.
leaving a door or window
open.
l In the cooling mode, if it is
operated in a room with high
humidity (80%r.h. or more) for a
long time, water condensed in
the air conditioner may drop and
may wet and spoil furniture, etc.
Do not step onto an unstable
bench when
attaching/detaching the
panel.
l It may case an injury, etc. by
falling down.
Do not use for special
purposes.
l Do not use this air conditioner to
preserve precision devices, food,
animal, plants and art objects.
It may cause deterioration of
quality, etc.
If the supply cord is damaged, it
must be replaced by a special cord
or assembly available from the
manufacturer of its service agent.
l If will cause electrical shock or
fire.
When the air filter is to be
removed, do not touch the
metal parts of the indoor unit.
l It may cause an injury.
• 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 infirm persons without
supervision.
• Young children should be supervised to ensure that they do not play with the air conditioner.
Do not press the screen
using powerful pressure
or select two buttons.
lIt will cause product breakdown
or malfunction.
Do not touch or pull the lead
wire with wet hands.
lIt will cause product breakdown
or electric shock.
4

2. Operating Instructions
A) Indoor Unit, Outdoor Unit
Wired Remote
Controller (Optional) Wireless Remote Receiver & Controller
(Standard)
After installing the product, you must run a Test Run mode. Press
the Emergency Operation button for 5 seconds, until the LED
flickers. Then the indoor unit, duct runs cooling mode for 18
minutes, where the desired temperature is 18 °C and the
Wind strength is high.
1 Emergency Operation button :Turns the indoor unit on or off even when
remote control is not working.
2 Signal Detector : Receives the signal from remote control
3 Timer lamp (Green) : Lights up during the timer operation.
4 Hotstart lamp (Orange) : Available only for the heat pump models, not
cooling only models.
5 System On/Off lamp (Red) : Lights up during system controller operation.
6 Filter Sign lamp (Green) : Lights up after 2,400 hours from the time of
first power on operation.
Operation of Indication Lamps
5

B) Remote Control Preparation
Outdoor Unit
Air Intake
(side, rear) Connecting Wire
Power Wire
Connection Tube
Air Outlet
Vents
Cooling model: Low static Type Air Conditioner for cooling
6

C) Remote Control Operations
*
*
*
*
*
* Function not applicable for Lo-Static Duct Model.
INDOOR FAN SPEED SELECTION Button
Used to select fan speed in three steps low,
medium and high.
7

Cooling Mode
8

Auto Operation Mode
9

Dehumidification Mode
10

Fan Mode
Set the fan speed again. You can select the
fan speed in three steps – low, medium and high.
Each time the button is pressed, the fan
speed mode is shifted.
11

Temperature Setting/Room Temperature Checking
12

Timer
13

B
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e
n
e
S
C
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C
L
B
A
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Care and maintenance
Care and
maintenance
Indoor Unit
Caution: Before performing any maintenance, turn off the main power to the system.
Grille, Case, and Remote Control
qTurn the system off before cleaning. To clean,
wipe with a soft, dry cloth. Do not use bleach or
abrasives.
Note:
Supply power must be disconnected before
cleaning the indoor unit.
q
Never use any of the followings:
• Water hotter than 40°C
Could cause deformation and/or
discoloration.
• Volatile substances
Could damage the surfaces
of the air conditioner.
Clean the filter with a vacuum or warm, soapy
water.
• If very dirty, wash with a solution of
detergent in lukewarm water.
• If hot water (50°C or more) is used, filter
may be deformed.
After washing with water, dry well in the shade.
Re-install the air filter.
Air Filter
The air filters behind Indoor unit
(the suction side) should be checked and cleaned
once every 2 weeks or more often if necessary.
1
2
3
Indoor Unit Dimensions (mm)
(Unit:mm)
18/24/ Btu/h
1130 1180 383 575 93 190 21 1065 163 1100
Dimension
Capacity(Btu/h)
A B C D E F G H I J
CE
G
D
A
J
B
I
F
H
Drainage hole Drain Pump use
14

Outdoor Unit
The heat exchanger coils and panel vents of the
outdoor unit should be checked regularly. If clogged
with dirt or soot, the heat exchanger and panel vents
may be professionally steam cleaned.
Note:
Dirty or clogged coils will reduce the operating
efficiency of the system and cause higher
operating costs.
Outdoor Unit
Indoor Unit
Outdoor Unit
(Side) (Rear)
Air
outlet
vents
Air
intake
vents
Connecting Wir
Connection Pip
Control Cover
H
D
W
W
H
D
L2
L1
e
e
Model Capacity Indoor dimension Outdoor Dimension
W D H W D H L1 L2
JB-Q18GB2A0
1.5TR 1100 575 190 800 260 555 590 305
JB-Q24GB2A0
2.0TR 1100 575 190 800 260 555 590 305
15
1.5TR
1100 575 190 770 288 545 560 330
JB-Q18GB2A1
JB-Q18GB2A2
1.5TR 1100 575 190 770 288 545 560 330
JB-Q24GB2A1 2.0TR
1100 575 190 800 260 555 590 305

CAUTION
CAUTION
1
2
When the air conditioner is not going to be used for a long time.
Operation Tips
Helpful information
The air filters and your electiric bill.
If the air filters become clogged with dust, the
cooling capacity will drop, and 6% of the
electricity used to operate the air conditioner will
be wasted.
When it is not going to be used for
a long time.
When the air conditioner is to
be used again.
Operate the air conditioner on Air circulation
mode (Refer to page 15) for 2 to 3 hours.
• This will dry out the internal parts.
Turn off the circuit breaker when the air conditioner
is not going to be used for a long time.
Dirt may collect and may cause a fire.
nCheck that the air inlet and outlet of the
indoor/outdoor unit are not blocked.
Do not overcool the room.
This is not good for the health
and wastes electricity.
Keep blinds or curtains
closed.
Do not let direct sunshine
enter the room when the air
conditioner is in operation.
Make sure that the doors
and windows are shut tight.
Avoid opening doors and
windows as much as possible
to keep the cool air in the
room.
Clean the air filter regularly.
Blockages in the air filter
reduce the airflow and lower
cooling and dehumidifying
effects. Clean at least once
every two weeks.
Ventilate the room
occasionally.
Since windows are kept
closed, it is a good idea to
open them and ventilate the
room now and then.
Turn off the circuit breaker.
16

Self-diagnosis Function
17

Error Diagnosis
Sr.
No. ERROR CODE DIAGNOSIS
1
2
3
4
5
CH-01
CH-02
CH-04
CH-03
Check room thermistor
Check pipe thermistor (CN-Pipe/In)
Check DIP Switch Comm (Yes/No)
Check Wired Remote Connection
with PCB
DESCRIPTION
Recover after 5 seconds of operation when respective
thermistor healthy
Recover after 3 seconds of operation when respective
thermistor healthy
Check DIP Switch setting and Power Reset.
Check wired remote cable for cut/loose contact.
CH-05
Recover after 4 minutes of operation when float sensor /
Jumper healthy
Check float sensor / Jumper
6Check pipe thermistor (CB-Pipe/Out) Recover after 3 seconds of operation when respective
thermistor healthy.
CH-06
7Check Option PCB (EPROM) Check Interconnection of Option PCB and Power Reset
CH-09
8Check for BLDC Motor Fan Lock BLDC Motor not operation.
CH-10
18

Before you call for service...
Troubleshooting
Tips
Troubleshooting Tips! Save time and money!
NOTE
WATER RESISTANT: The outdoor side of this appliance is WATER RESISTANT.
The indoor side is not water resistant and should not be exposed to excess
water.
Check the following points before requesting repairs or service.... If the malfunction persist, please contact your
dealer.
The air conditioner does not
operate.
The room has a peculiar odor.
Case Explanation
Does not cool or heat effectively.
It seems that condensate is
leaking from the air Conditioner.
Air conditioner does not operate
for about 3 minutes when restart.
noisy.
The air conditioner operation is
Crack sound is heard.
Remote control display is faint, or
no display at all.
l Have you made a mistake in timer operation?
l On first starting, the indoor unit operates in
fifteen seconds.
l Has the fuse blown or has the circuit breaker
been tripped?
l Check that this is not a damp smell exuded by
the walls, carpet, furniture or cloth items in the
room.
l Condensation occurs when the airflow from the
air conditioner cools the warm room air.
l This is the protector of the mechanism.
l Wait about three minutes and operation will
begin.
l Is the air filter dirty? See air filter cleaning
instructions.
l The room may have been very hot when the
room air conditioner was first turned on. Allow
time for it to cool down.
l Has the setting temperature been set
incorrectly?
l Are the indoor unit's air inlet or outlet vents
obstructed?
l For a noise that sounds like water flowing.
-This is the sound of freon flowing inside the air
conditioner unit.
l For a noise that sounds like the compressed air
releasing into atmosphere.
-This is the sound of the dehumidifying water
being processed inside the air conditioning
unit.
l This sound is generated by the
expansion/contraction of the inlet grille, etc. due
to changes of temperature.
l Has the circuit breaker been tripped?
lCheck power supply for single/reverse phase,
voltage imbalance.
19

Wide LCD Wired Remote Controller (Optional)
20