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Model
LS-M3021CL_AL LS-M3060HL_CL_AL_BL LS-M3061HL_CL_BL_AL LS-M3063CL LS-M3064HL_CL_DL_EL LS-M3221HL_CL_BL_AL LS-N3621CL_AL LS-N3660HL_CL_AL_BL LS-N3661HL_CL_AL_BL LS-N3664EL LS-N3821HL_CL_BL_AL
Pages
103
Size
6.08 MB
Type
PDF
Document
Service Manual
Brand
Device
Air Conditioner
File
ls-m3061bl.zip
Date

LG LS-M3021CL_AL / LS-M3060HL_CL_AL_BL / LS-M3061HL_CL_BL_AL / LS-M3063CL / LS-M3064HL_CL_DL_EL / LS-M3221HL_CL_BL_AL / LS-N3621CL_AL / LS-N3660HL_CL_AL_BL / LS-N3661HL_CL_AL_BL / LS-N3664EL / LS-N3821HL_CL_BL_AL Service Manual ▷ View online

- 21 -
Display Function 
Self-diagnosis Function
Signal Receptor
Receives the signals from the remote control.(Signal receiving sound: two short beeps or one long beep.)
Operation Indication Lamps
On/Off
: Lights up during the system operation.
Timer or Sleep Mode
: Lights up during Timer operation or Sleep mode.
Defrost Mode
: Lights up during Defrost Mode or Hot 
Start operation. (Heat pump model only)
Outdoor unit operation : Lights up during outdoor unit operation. (Cooling model only)
Plasma Mode
: Lights up during plasma-purification operation.(option)
Auto Restart Mode
: Lights up during if Restart Button is pressed.
Auto Restart Button
: In failure of electric power, if the button is pressed the unit runs as previous 
setting operation when power returns.
Forced Operation Button : Operation starts, when this button is pressed and stops when you press the 
button again.
3sec
3sec
3sec
(once)
3sec
3sec
(twice)
3sec
(5times)
Error
Code
1
2
5
Error LED
(Indoor body operation LED)
Error contents
• Indoor room temperature
thermistor open/short
• Indoor pipe temperature
thermistor open/short.
• Outdoor pipe temperature
thermistor open/short.
• Poor communication.
• Indoor TH assy check
• Outdoor TH assy check
• Communication line/circuit
check
SVC check point
- 21 -
Display Function 
Self-diagnosis Function
Signal Receptor
Receives the signals from the remote control.(Signal receiving sound: two short beeps or one long beep.)
Operation Indication Lamps
On/Off
: Lights up during the system operation.
Timer or Sleep Mode
: Lights up during Timer operation or Sleep mode.
Defrost Mode
: Lights up during Defrost Mode or Hot 
Start operation. (Heat pump model only)
Outdoor unit operation : Lights up during outdoor unit operation. (Cooling model only)
Plasma Mode
: Lights up during plasma-purification operation.(option)
Auto Restart Mode
: Lights up during if Restart Button is pressed.
Auto Restart Button
: In failure of electric power, if the button is pressed the unit runs as previous 
setting operation when power returns.
Forced Operation Button : Operation starts, when this button is pressed and stops when you press the 
button again.
3sec
3sec
3sec
(once)
3sec
3sec
(twice)
3sec
(5times)
Error
Code
1
2
5
Error LED
(Indoor body operation LED)
Error contents
• Indoor room temperature
thermistor open/short
• Indoor pipe temperature
thermistor open/short.
• Outdoor pipe temperature
thermistor open/short.
• Poor communication.
• Indoor TH assy check
• Outdoor TH assy check
• Communication line/circuit
check
SVC check point
- 22 -
Installation
Read completely, then follow step by step.
1. Installation of Indoor, Outdoor unit
1) Select the best location 
1. Indoor unit
Do not have any heat or steam near the unit.
Select a place where there are no obstacles in
front of the unit.
Make sure that condensation drainage can be
conveniently routed away.
Do not install near a doorway.
Ensure that the space around the left and right of
the unit is more than 30cm. The unit should be
installed as high on the wall as possible, allowing
a minimum of 12cm from ceiling.
Use a stud finder to locate studs to prevent
unnecessary damage to the wall.
2. Outdoor unit
If an awning is built over the unit to prevent direct sun-
light or rain exposure, make sure that heat radiation
from the condenser is not restricted.
Ensure that the space around the back and sides is
more than 10cm. The front of the unit should have
more than 70cm of space.
Do not place animals and plants in the path of the
warm air.
Take the air conditioner weight into account and select
a place where noise and vibration are minimum.
Select a place so that the warm air and noise from the
air conditioner do not disturb neighbors.
Rooftop Installations:
If the outdoor unit is installed on a roof structure, be
sure to level the unit. Ensure the roof structure and
anchoring method are adequate for the unit location.
Consult local codes regarding rooftop mounting.
If the outdoor unit is installed on root structures or walls,
this may result in excessive noise and vibration, and
maybe also classed as non serviceable installation.
2) Piping length and elevation
More than 12cm
More than
30cm
More than
30cm
More than 2.3m
More than 10cm
More than 10cm
More 
than 60cm
More than 60cm
More than 70cm
More than 10cm
More than 10cm
More 
than 60cm
More than 60cm
More than 70cm
In case more than 5m
• Capacity is based on standard length and maximum
allowance length is on the basis of reliability.
• Oil trap should be installed every 5~7 meters.
Outdoor unit
Indoor unit
A
B
A
Oil trap
Outdoor unit
Indoor unit
B
CAUTION
Install the indoor unit on the wall where the height
from the floors more than 2.3 meters.
A minimum pipe run of 7.5 meters is required to min-
imise vibration & excessive noise.
CAUTION
30k, 32k
5/8"
3/8"
7.5
15
30
30
36k, 38k
3/4"
3/8"
7.5
20
30
50
Pipe Size
Capacity
(Btu/h)
GAS
LIQUID
Max. 
length
(m)
Additional
Refrigerant
(g/m)
Max.
Elevation
B
(m)
Standard
Length
(m)
30K, 32K
36K, 38K
- 31 -
3. Connecting the cable between
indoor unit and outdoor unit
1) Connect the cable to the Indoor unit.
Connect the cable to the indoor unit by connect-
ing the wires to the terminals on the control
board individually according to the outdoor unit
connection.
(Ensure that the color of the wires of the
outdoor unit and the terminal No. are the same as
those of the indoor unit.)
RED
BLUE
BROWN
4(N)
Terminals on the indoor unit
3(L)
5
4(N)
Terminals on the outdoor unit
Color of Wires
POWER INPUT
Color of Wires
3(L)
2(N)
1(L)
5
G/Y
RED
BLUE
BROWN
G/Y
The power cord connected to the outdoor unit 
should be complied with the following
specifications (Rubber insulation, type H05RN-F 
approved by HAR or SAA).
The connecting cable connected to the indoor
and outdoor unit should be complied with the
following specifications (Rubber insulation, type
H07RN-F approved by HAR or SAA).
CAUTION
8.5mm
20mm
GN/YL
NORMAL
CROSS-SECTIONAL
AREA 2.5mm
2
8.5mm
20mm
GN/YL
NORMAL
CROSS-SECTIONAL
AREA 5.5mm
2
20mm
GN/YL
NORMAL
CROSS-SECTIONAL
AREA 0.75mm
2
7.5mm
30K, 32K
36K, 38K
If a power plug is not to be used, 
provide a circuit breaker between 
power source and the unit as 
shown below.
CAUTION
Air 
Conditioner
Main power source
Circuit Breaker
Use a circuit breaker
or time delay fuse.
Page of 103
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