LG LB-G4280AL Owner’s Manual
ENGLISH
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
Prior
to
installation,
this
air-conditioning
unit
must
be
submitted
for
approval
by
the
utility
service
which
provides
electricity
(EN
61000-3
Norm.)
F
or
Your
Records
R
ead
This
Manual
CAUTION
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
WARNING
WARNING
WARNING
CAUTION
Never
Do
This
Always
Do
This
WARNING
WARNING
Precautions
Safety
Precautions
3
ENGLISH
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.
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
CAUTION
CAUTION
CAUTION
CAUTION
4
Do
not
clean
the
air
conditioner
with
water.
?
Water
may
enter
the
unit
and
degrade
the
insulation.
It
may
cause
an
electric
shock.
Ventilate
well
when
used
together
with
a
stove,
etc.
?
An
oxygen
shortage
may
occur.
When
the
unit
is
to
be
cleaned,
switch
off,
and
turn
off
the
breaker.
?
Since
the
fan
rotates
at
high
speed
during
operation,
it
may
cause
an
injury.
Do
not
put
a
pet
or
house
plant
where
it
will
be
exposed
to
direct
air
flow.
?
This
could
injure
the
pet
or
plant.
Do
not
apply
an
insecticide
or
flammable
spray.
?Itmaycauseafireor
deformation
of
the
cabinet.
Do
not
leave
on
installation
stand
which
is
damaged.
?
The
unit
may
drop
or
fall
down
and
cause
an
injury.
Do
not
put
a
stove,
etc.
where
is
exposed
to
direct
air
flow.
?
It
may
cause
imperfect
combustion.
When
the
unit
is
not
going
to
be
used
for
a
long
time,
turn
off
the
breaker.
?
It
may
cause
an
injury.
Do
not
step
on
the
outdoor
unit
and
do
not
put
anything
on
it.
?
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.
?
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.
?
It
may
case
an
injury,
etc.
by
falling
down.
Do
not
use
for
special
purposes.
?
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.
?
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.
?
It
may
cause
an
injury.
Do
not
insert
hands
through
vanes
when
the
air
conditioner
is
operating.
?
It
will
cause
an
injury
by
the
rotating
blower.
?
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.
RESET
Plasma
Timer
Cancel
Program
Week
Holiday
SET/CLR
Min
Hour
OPERATION
FAN
SPEED
Program
set
SUB
FUNCTION
SET
TEMP
Room
Temp
HI
MED
LO
Heater
Defrost
Filter
Preheat
Out door
Timer
On
Set
no.
Time
Off010305070911131517192123
Time
Operation
unit
3
8
5
9
10
11
12
13
14
2
1
6
47
17
16
15
Signal
receptor
ZONE
1234
Operating
Instructions
Operating
Instructions
5
ENGLISH
Name
and
Function
of
Remote
Controller
Operation
display
Displays
the
operation
conditions.
On/Off
Button
Operation
starts
when
this
button
is
pressed,
and
stops
when
the
button
is
pressed
again.
Set
Temperature
Button
Used
to
set
the
temperature
when
the
desired
temperature
is
obtained.
FAN
Operation
Button
Used
to
circulate
room
air
without
cooling
or
heating.
Electric
Heater
Button(optional:48/60k
ZL/ZA/ZP
Model
only)
Used
to
set
the
Electric
Heater.
Fan
Speed
Button
Used
to
set
desired
fan
speed.
Operation
Mode
Selection
Button
Used
to
select
the
operation
mode.
?
Auto
Operation
Mode.
?
Cooling
Operation
Mode.
?
Soft
Dry
Operation
Mode.
?
Heating
Operation
Mode.(except
cooling
model)
Timer
Cancel
Button
Used
to
cancel
the
timer.
Timer
Set
Button
Used
to
set
the
timer
when
the
desired
time
is
obtained.
Week
Button
Used
to
set
a
day
of
the
week.
Program
Button
Used
to
set
the
weekly
timer.
Holiday
Button
Used
to
set
a
holiday
of
the
week.
Time
Set
Button
Used
to
set
the
time
of
the
day
and
change
the
time
in
the
weekly
timer
Function.
Set
and
Clear
Button
Used
to
set
and
clear
the
weekly
timer.
Room
Temperature
Checking
Button
Used
to
check
the
room
temperature.
Plasma
Air
Clean
Button(optional)
Reset
Button
Used
to
set
the
current
time
and
clear
the
setting
time.
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Remote
Controller
Display
temperature
can
be
different
from
actual
room
temperature
if
the
remote
controller
is
installed
at
the
place
where
sun-rays
are
falling
directly
or
the
place
nearby
heat
source.
6
A/CL
7
10
11
9
2
8
5
6
4
1
3
Optional
Function
?
WIRELESS
REMOTE
CONTROLLER
This
air-conditioner
is
equipped
with
wired
remote
controller
basically.
But
if
you
want
to
have
the
wireless
remote
controller,
you pay
for
it.
Remote
Controller
Signal
transmitter
Transmits
the
signals
to
the
signal
receptor.
FAN
Operation
Button
Used
to
circulate
room
air
without
cooling
or
heating.
Cooling
Operation
Button
Soft
Dry
Operation
Button
Used
to
dehumidify
without
overcooling.
Heating
Operation
Button
(Heat
pump
model
only)
Timer
Set
Button
Used
to
set
the
timer
when
the
desired
time
is
obtained.
Then
the
wired
remote
controller
is
set
up
to
24
hours
by
an
hour
but
the
wireless
remote
controller
is
set
up
to
7
hours
by
an
hour.
Therefore,
if
you
want
to
set
over
7
hours,
use
the
wired
remote
controller.
Fan
Speed
Button
Used
to
set
the
desired
fan
speed.
On/Off
Button
Operation
starts
when
this
button
is
pressed,
and
stops
when
the
button
is
pressed
again.
Set
Temperature
Button
Used
to
set
the
temperature
when
the
desired
temperature
is
obtained
Auto
Operation
Button
Plasma
Air
Clean
Button(Optional)
Electric
Heater
Button(Optional:
48/60k
ZL/ZA/ZP
Model
only)
Used
to
set
the
Electric
Heater.
11
10
9
8
7
6
5
4
3
2
1
CAUTION
for
handling
the
Remote
Controller
?
Aim
at
the
signal
receptor
on
the
wired
remote
controller
so
as
to
operate.
?
The
remote
control
signal
can
be
received
at
a
distance
of
up
to
about
7m.
?
Be
sure
that
there
are
no
obstructions
between
the
remote
controller
and
the
signal
receptor.
?
Do
not
drop
or
throw
the
remote
controller.
?
Do
not
place
the
remote
controller
in
a
location
exposed
to
direct
sunlight,
or
near
the
heating
unit,
or
any
other
heat
source.
?
Block
a
strong
light
over
the
signal
receptor
with
a
curtain
or
etc.
so
as
to
prevent
the
abnormal
operation.
(ex:electronic
quick
start,
ELBA,
inverter
type
fluorescent
lamp)
ENGLISH
7
OPERATION
FAN
SPEED
SUB
FUNCTION
SET
TEMP
Time
OPERATION
FAN
SPEED
SUB
FUNCTION
SET
TEMP
Time
OPERATION
FAN
SPEED
SUB
FUNCTION
SET
TEMP
Time
OPERATION
FAN
SPEED
SUB
FUNCTION
SET
TEMP
Hour
Min
Week
RESET
Set
the
Current
Time
and
a
day
of
the
Week
1
Press
the
' '
button.
Each
time
the
button
is
pressed,
the
number
is
changed
from
to
.
You
can
set
the
number
of
the
current
hour.
2
Press
the
' '
button.
Each
time
the
button
is
pressed,
the
number
is
increased
from
to
.
You
can
set
the
number
of
the
current
minute.
3
Press
' '
button.
Each
time
the
button
is
pressed,
a
day
of
the
week
is
shifted
from
sunday
to
saturday.
You
can
set
the
day
of
the
week.
4
Press
the
' '
button.
If
you
want
to
reset
the
current
time
and
a
day
of
the
week,
click
the
Reset
button.
Hour
Min
Week
RESET
8
Week
Program
SET/CLR
Min
Hou
OPERATION
FAN
SPEED
SUB
FUNCTION
SET
TEMP
Program
set
010305070911131517192123
Time
OPERATION
FAN
SPEED
SUB
FUNCTION
SET
TEMP
010305070911131517192123
Time
Program
Weekly
Programming
4
Press
the
Program
button
again
to
finish
weekly
programmining.
1
Press
the
Program
button.
The
remote
controller
is
displayed
like
a
picture.
Then
'
','
'
and
'01'
is
blinked.
2
Press
the
' '
button.
Press
button
repeatedly
until
desired
mode
appears.
For
example,
if
you
want
Thu,
press
button
4
times.
3
Select
the
time
you
want.
Press
or
button,
then
blinking
letter
is
shown.
If
you
press
button,
then
' '
shape
appears.
' '
shape
means
that
five
o'clock
is
reserved.
Using
below
buttons,
you
can
reserve
time.
*
For
example,
the
air-conditioner
is
on
6,7,8
and
13~22
o'clock.
Program
set
Week
Week
Week
Min
Hour
SET/CLR
05
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