LG LS-K1820CL User manual

Room Air Conditioner
SERVICE MANUAL
MODEL : LS-K1820CL/CM/CN/HL/HM/HN
LS-K1822CL/CM/CN/HL/HM/HN
LS-K1860CL/CM/CN/HL/HM/HN
LS-K1861CL/CM/CN/HL/HM/HN
LS-K1862CL/CM/CN/HL/HM/HN
LS-K1865CL/CM/CN/HL/HM/HN
LS-K1866CL/CM/CN/HL/HM/HN
LS-K2460CL/CM/CN/HL/HM/HN
LS-K2462CL/CM/CN/HL/HM/HN
LS-K2420CL/CM/CN/HL/HM/HN
LS-K2422CL/CM/CN/HL/HM/HN
LS-K2621CL/CM/CN/HL/HM/HN
LS-K2661CL/CM/CN/HL/HM/HN
LS-K2662CL/CM/CN/HL/HM/HN
LS-K1863DL

- 2 -
Contents
Functions.................................................................................................................................3
Product Specifications ..........................................................................................................5
Dimensions............................................................................................................................12
Refrigeration Cycle Diagram................................................................................................14
Pipe Length and the Elevation.............................................................................................16
Wiring Diagram......................................................................................................................17
Operation Details ..................................................................................................................21
Display Function ...................................................................................................................29
Self-diagnosis Function........................................................................................................29
Installation .............................................................................................................................30
Operation ...............................................................................................................................43
Disassembly of the parts (Indoor Unit)...............................................................................45
2-way, 3-way Valve.................................................................................................................51
Cycle Troubleshooting Guide...............................................................................................58
Electronic Parts Troubleshooting Guide.............................................................................59
Electronic Control Device.....................................................................................................65
Schematic Diagram...............................................................................................................67
Exploded View & Replacement Parts List...........................................................................69

- 3 -
Functions
• Room temperature sensor. (THERMISTOR)
• Maintains the room temperature in accordance with the Setting Temp.
• Indoor fan is delayed for 5 sec at the starting.
• Restarting is inhibited for approx. 3 minutes.
• High, Med, Low
--- Lights up in operation
--- Lights up in Sleep Mode
--- Lights up in Timer Mode
--- Lights up in Deice Mode (for Heating Model)
OUTDOOR --- Lights up in compressor operation (for Cooling Model)
• Intermittent operation of fan at low speed.
• The fan is switched to low(Cooling), med(Heating) speed.
• The unit will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.
• The fan is switched to intermittent or irregular operation
•
The fan speed is automatically switched from high to low speed.
• The louver can be set at the desired position or swing
up and down automatically.
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
Room temperature control
Starting Current Control
Time Delay Safety Control
Indoor Fan Speed Control
Operation indication Lamps (LED)
Soft Dry Operation Mode
• Both the indoor and outdoor fan
stops during deicing.
• The indoor fan stops until the
evaporator piping temperature will be
reached at 28°C.
Sleep Mode Auto Control
Natural Air Control by CHAOS Logic
Airflow Direction Control
Deice (defrost) control (Heating)
Hot-start Control (Heating)

- 4 -
Healthy Dehumidification Operation Mode. ( )
Remote Controller
Operation ON/OFF
Reset
Operation Mode Selection
Temperature Setting
Timer Selection
Timer Setting
JET COOL
Timer Cancel
Sleep Operation
Airflow Direction Control
(Cooling
model only) (Heating
model only)
TEMPERATURE LOW HIGH
Cooling Operation Mode.( ) Heating Operation Mode.( ) Auto Operation Mode.( )
Fan Operation Mode
Horizontal Airflow Direction Control Button(Option)
Room, Temperature Display
Setting the Time or Timer
PLASMA(Option)/NEGATIVE ION(Option)
ON OFF
SET
PLASMA
CANCEL
Fan Speed Selection
(Low) (Med) (High) (CHAOS)
: (High:39°C Low:11°C)
: OFF, ON, OFF ON
: Cancel Sleep Mode, Timer ON or Timer OFF
: 1, 2, 3, 4, 5, 6, 7, Off Timer
: Fan Operates without cooling or heating.
Cooling Down to 18°C
Up to 30°CHeating Down to 16°C Up to 30°C

- 5 -
Product Specifications
Cooling Capacity BTU/h(kcal/h)
W
Heating Capacity BTU/h(kcal/h)
W
Moisture Removal l/h
Power Source Ø, V, Hz
Air Circulation m3/min
Noise Level dB(A)±3
Input W
Runnig Current A
Starting Current
A
E.E.R. BTU/h-W
C.O.P W/W
Motor Output W
mm
Net. Weight kg
Refrigerant(R-22) g
Airflow Direction Control (Up & Down)
Airflow Direction Control (Right & Left)
Negative lon
Air Purifying Filter
Deicer
Hot Start
Chaos Wind
Micom Dry
Timer
Self Diagnosis
Remocon type
Service valve
Sleeping Operation
Drain Hose
Connecting Cable
Power Cord
18,000(4,536)
5,274
-
-
2.5
1Ø, 220-240V, 50Hz
12
42
39
53
1,900
-
8.8
-
52
-
9.5
-
20
62
1,080 x 314 x 181
870 x 655 x 320
12
57
820
YES
NO
NO
NO(OPTION)
NO
NO
YES
YES
24hr ON/OFF
YES
L.C.D Wireless
1/4"(6.35)
1/2"(12.7)
YES
YES
1.5mm
2
1.5mm
2
18,000(4,536)
5,274
19,000(4,788)
5,564
2.5
1Ø, 220-240V, 50Hz
12
42
39
53
1,950
1,950
8.7
8.7
53
53
9.2
2.86
20
62
1,080 x 314 x 181
870 x 655 x 320
12
59
1,270
YES
NO
NO
NO(OPTION)
YES
YES
YES
YES
24hr ON/OFF
YES
L.C.D Wireless
1/4"(6.35)
1/2"(12.7)
YES
YES
1.5, 0.75mm
2
1.5mm
2
18,000(4,536)
5,274
-
-
2.5
1Ø, 220V, 60Hz
14
42
40
51
1,900
-
8.9
-
52
-
9.47
-
21
60
1,080 x 314 x 181
870 x 655 x 320
12
57
870
YES
NO
NO
NO
NO
NO
YES
YES
24hr ON/OFF
YES
L.C.D Wireless
1/4"(6.35)
5/8"(15.88)
YES
YES
1.5mm
2
1.5mm
2
18,000(4,536)
5,274
19,000(4,788)
5,564
2.5
1Ø, 220V, 60Hz
14
42
40
51
1,800
1,900
8.5
8.9
52
52
10.0
2.93
21
60
1,080 x 314 x 181
870 x 655 x 320
12
58
1,360
YES
NO
NO
NO
YES
YES
YES
YES
24hr ON/OFF
YES
L.C.D Wireless
1/4"(6.35)
5/8"(15.88)
YES
YES
1.5, 0.75mm
2
1.5mm
2
18,000(4,536)
5,274
-
-
2.5
1Ø, 220~240V, 50Hz
12
42
39
53
1,610
-
7.0
-
52
-
9.5
-
20
62
1,080 x 314 x 181
870 x 655 x 320
12
57
800
YES
NO
NO
NO
NO
NO
YES
YES
24hr ON/OFF
YES
L.C.D Wireless
1/2"(12.7)
5/8"(15.88)
YES
YES
1.5mm
2
1.5mm
2
Model Name
Unit
Indoor
Outdoor
Indoor
Outdoor
Cooling
Heating
Cooling
Heating
Cooling
Heating
Cooling
Heating
Indoor
Outdoor
Indoor
Outdoor
Indoor
Outdoor
Liquid
Gas
Dimensions
(W x H x D)
Item
LS-
K1860CL/CM/CN
LS-
K1860HL/HM/HN
LS-
K1820CL/CM/CN
LS-
K1820HL/HM/HN LS-K1863DL

- 6 -
Cooling Capacity BTU/h(kcal/h)
W
Heating Capacity BTU/h(kcal/h)
W
Moisture Removal l/h
Power Source Ø, V, Hz
Air Circulation m3/min
Noise Level dB(A)±3
Input W
Runnig Current
A
Starting Current
A
E.E.R. BTU/h-W
C.O.P W/W
Motor Output W
mm
Net. Weight kg
Refrigerant(R-22) g
Airflow Direction Control (Up & Down)
Airflow Direction Control (Right & Left)
Negative lon
Air Purifying Filter
Plasma Filter
Deicer
Hot Start
Chaos Wind
Micom Dry
Timer
Self Diagnosis
Remocon type
Service valve
Sleeping Operation
Drain Hose
Connecting Cable
Power Cord
18,000(4,536)
5,274
-
-
2.5
1Ø, 220-240V, 50Hz
12
42
39
53
1,900
-
8.8
-
52
-
9.5
-
20
62
1,080 x 314 x 181
870 x 655 x 320
12
57
820
YES
YES
YES
YES
NO
NO
NO
YES
YES
24hr ON/OFF
YES
L.C.D Wireless
1/4"(6.35)
1/2"(12.7)
YES
YES
1.5mm2
1.5mm2
18,000(4,536)
5,274
19,000(4,788)
5,564
2.5
1Ø, 220-240V, 50Hz
12
42
39
53
1,950
1,950
8.7
8.7
53
53
9.2
2.86
20
62
1,080 x 314 x 181
870 x 655 x 320
12
59
1,270
YES
YES
YES
YES
NO
YES
YES
YES
YES
24hr ON/OFF
YES
L.C.D Wireless
1/4"(6.35)
1/2"(12.7)
YES
YES
1.5, 0.75mm2
1.5mm2
18,000(4,536)
5,274
19,000(4,788)
5,564
2.5
1Ø, 220-240V, 50Hz
12
42
39
53
1,950
1,950
9.2
9.2
53
53
9.2
2.86
20
62
1,080 x 314 x 181
870 x 655 x 320
12
59
1,470
YES
NO
NO
NO(OPTION)
NO
YES
YES
YES
YES
24hr ON/OFF
YES
L.C.D Wireless
1/4"(6.35)
1/2"(12.7)
YES
YES
1.5, 0.75mm2
1.5mm2
18,000(4,536)
5,274
19,000(4,788)
5,564
2.5
1Ø, 220-240V, 50Hz
12
42
39
53
1,950
1,950
9.2
9.2
53
53
9.2
2.86
20
62
1,080 x 314 x 181
870 x 655 x 320
12
59
1,470
YES
NO
NO
NO(OPTION)
YES
YES
YES
YES
YES
24hr ON/OFF
YES
L.C.D Wireless
1/4"(6.35)
1/2"(12.7)
YES
YES
1.5, 0.75mm2
1.5mm2
Model Name
Unit
Indoor
Outdoor
Indoor
Outdoor
Cooling
Heating
Cooling
Heating
Cooling
Heating
Cooling
Heating
Indoor
Outdoor
Indoor
Outdoor
Indoor
Outdoor
Liquid
Gas
Dimensions
(W x H x D)
Item
LS-
K1861CL/CM/CN LS- K1865HL/HM/HN LS-
K1866HL/HM/HN
LS-
K1861HL/HM/HN

- 7 -
Cooling Capacity BTU/h(kcal/h)
W
Heating Capacity BTU/h(kcal/h)
W
Moisture Removal l/h
Power Source Ø, V, Hz
Air Circulation m3/min
Noise Level dB(A)
Input W
Runnig Current A
Starting Current
A
E.E.R. BTU/h-W
C.O.P W/W
Motor Output W
mm
Net. Weight kg
Refrigerant(R-22) g
Airflow Direction Control (Up & Down)
Airflow Direction Control (Right & Left)
Negative lon
Air Purifying Filter
Deicer
Hot Start
Chaos Wind
Micom Dry
Timer
Self Diagnosis
Remocon type
Service valve
Sleeping Operation
Drain Hose
Connecting Cable
Power Cord
24,000(6,048)
7,032
-
-
2.5
1Ø, 220-240V, 50Hz
16
42
44
54
2,470
-
11.3
-
52
-
9.7
-
35
83
1,080 x 314x 181
870 x 655 x 320
12
57
1,520
YES
NO
NO
NO(OPTION)
NO
NO
YES
YES
24hr ON/OFF
YES
L.C.D Wireless
3/8"(9.52)
5/8"(15.88)
YES
YES
2.5mm2
2.5mm2
24,000(6,048)
7,032
24,000(6,040)
7,032
2.5
1Ø, 220-240V, 50Hz
16
42
44
54
2,670
2,610
12.2
11.9
53
53
9.0
2.635
35
83
1,080 x 314 x 181
870 x 655 x 320
12
59
1,300
YES
NO
NO
NO(OPTION)
YES
YES
YES
YES
24hr ON/OFF
YES
L.C.D Wireless
3/8"(9.52)
5/8"(15.88)
YES
YES
2.5, 0.75mm2
2.5mm2
24,000(6,048)
7,032
-
-
3.5
1Ø, 220V, 60Hz
15.5
48
42±3
54±3
2,100
-
9.8
-
61
-
10.5
-
35
78
1,080 x 314 x 181
870 x 655 x 320
12
58
1,580
YES
NO
NO
NO(OPTION)
NO
NO
YES
YES
24hr ON/OFF
YES
L.C.D Wireless
1/4"(6.35)
5/8"(15.88)
YES
YES
2.5mm2
2.5mm2
24,000(6,048)
7,032
24,000(6,048)
7,032
3.5
1Ø, 220V, 60Hz
16
48
44±3
55±3
2,525
2,525
12.0
12.0
70
70
9.5
2.78
35
78
1,080 x 314 x 181
870 x 655 x 320
12
65
1,610
YES
NO
NO
NO(OPTION)
YES
YES
YES
YES
24hr ON/OFF
YES
L.C.D Wireless
1/4"(6.35)
5/8"(15.88)
YES
YES
2.5, 0.75mm2
2.5mm2
Model Name
Unit
Indoor
Outdoor
Indoor
Outdoor
Cooling
Heating
Cooling
Heating
Cooling
Heating
Cooling
Heating
Indoor
Outdoor
Indoor
Outdoor
Indoor
Outdoor
Liquid
Gas
Dimensions
(W x H x D)
Item
LS-
K2460CL/CM/CN LS- K2460HL/HM/HN LS-
K2420CL/CM/CN LS- K2420HL/HM/HN

- 8 -
Cooling Capacity BTU/h(kcal/h)
W
Heating Capacity BTU/h(kcal/h)
W
Moisture Removal l/h
Power Source Ø, V, Hz
Air Circulation m3/min
Noise Level dB(A)
Input W
Runnig Current A
Starting Current
A
E.E.R. BTU/h-W
C.O.P W/W
Motor Output W
mm
Net. Weight kg
Refrigerant(R-22) g
Airflow Direction Control (Up & Down)
Airflow Direction Control (Right & Left)
Negative lon
Air Purifying Filter
Deicer
Hot Start
Chaos Wind
Micom Dry
Timer
Self Diagnosis
Remocon type
Service valve
Sleeping Operation
Drain Hose
Connecting Cable
Power Cord
26,000
7,032
-
-
2.5
1Ø, 220-240V, 50Hz
16
42
44
54
2,470
-
11.3
-
52
-
9.7
-
35
83
1,080 x 314 x 181
870 x 655 x 320
12
57
1,520
YES
YES
YES
YES
NO
NO
YES
YES
24hr ON/OFF
YES
L.C.D Wireless
3/8"(9.52)
5/8"(15.88)
YES
YES
2.5mm2
2.5mm2
26,000
7,032
24,000(6,040)
7,032
2.5
1Ø, 220-240V, 50Hz
16
42
44
54
2,670
2,610
12.2
11.9
53
53
9.0
2.635
35
83
1,080 x 314 x 181
870 x 655 x 320
12
59
1,300
YES
YES
YES
YES
YES
YES
YES
YES
24hr ON/OFF
YES
L.C.D Wireless
3/8"(9.52)
5/8"(15.88)
YES
YES
2.5, 0.75mm2
2.5mm2
26,000
7,032
-
-
3.5
1Ø, 220V, 60Hz
15.5
48
42±3
54±3
2,100
-
9.8
-
61
-
10.5
-
35
78
1,080 x 314 x 181
870 x 655 x 320
12
58
1,580
YES
YES
YES
YES
NO
NO
YES
YES
24hr ON/OFF
YES
L.C.D Wireless
1/4"(6.35)
5/8"(15.88)
YES
YES
2.5mm2
2.5mm2
26,000
7,032
24,000(6,048)
7,032
3.5
1Ø, 220V, 60Hz
16
48
44±3
55±3
2,525
2,525
12.0
12.0
70
70
9.5
2.78
35
78
1,080 x 314 x 181
870 x 655 x 320
12
65
1,610
YES
YES
YES
YES
YES
YES
YES
YES
24hr ON/OFF
YES
L.C.D Wireless
1/4"(6.35)
5/8"(15.88)
YES
YES
2.5, 0.75mm2
2.5mm2
Model Name
Unit
Indoor
Outdoor
Indoor
Outdoor
Cooling
Heating
Cooling
Heating
Cooling
Heating
Cooling
Heating
Indoor
Outdoor
Indoor
Outdoor
Indoor
Outdoor
Liquid
Gas
Dimensions
(W x H x D)
Item
LS-
K2661CL/CM/CN LS- K2661HL/HM/HN LS-
K2621CL/CM/CN LS- K2621HL/HM/HN

- 9 -
Cooling Capacity BTU/h(kcal/h)
W
Heating Capacity BTU/h(kcal/h)
W
Moisture Removal l/h
Power Source Ø, V, Hz
Air Circulation m3/min
Noise Level dB(A)±3
Input W
Runnig Current A
Starting Current
A
E.E.R. BTU/h-W
C.O.P W/W
Motor Output W
mm
Net. Weight kg
Refrigerant(R-22) g
Airflow Direction Control (Up & Down)
Airflow Direction Control (Right & Left)
Negative lon
Air Purifying Filter
Plasma Filter
Soft Start
Deicer
Hot Start
Chaos Wind
Micom Dry
Timer
Self Diagnosis
Remocon type
Service valve
Sleeping Operation
Drain Hose
Connecting Cable
Power Cord
18,000(4,536)
5,274
-
-
2.5
1Ø, 220-240V, 50Hz
12
42
39
53
1,900
-
8.8
-
52
-
9.5
-
20
62
1,080 x 314 x 181
870 x 655 x 320
12
57
820
YES
NO
NO
YES
YES
NO
NO
NO
YES
YES
24hr ON/OFF
YES
L.C.D Wireless
1/4"(6.35)
1/2"(12.7)
YES
YES
1.5mm2
1.5mm2
18,000(4,536)
5,274
19,000(4,788)
5,564
2.5
1Ø, 220-240V, 50Hz
12
42
39
53
1,950
1,950
8.7
8.7
53
53
9.2
2.86
20
62
1,080 x 314 x 181
870 x 655 x 320
12
59
1,270
YES
NO
NO
YES
YES
NO
YES
YES
YES
YES
24hr ON/OFF
YES
L.C.D Wireless
1/4"(6.35)
1/2"(12.7)
YES
YES
1.5, 0.75mm2
1.5mm2
24,000(6,048)
7,032
-
-
2.5
1Ø, 220-240V, 50Hz
16
42
44
54
2,470
-
11.3
-
52
-
9.7
-
35
83
1,080 x 314 x 181
870 x 655 x 320
12
57
1,520
YES
NO
NO
YES
YES
NO
NO
NO
YES
YES
24hr ON/OFF
YES
L.C.D Wireless
3/8"(9.52)
5/8"(15.88)
YES
YES
2.5mm2
2.5mm2
24,000(6,048)
7,032
24,000(6,048)
7,032
2.5
1Ø, 220-240V, 50Hz
16
42
44
54
2,670
2,610
12.2
11.9
53
53
9.0
2.635
35
83
1,080 x 314 x 181
870 x 655 x 320
12
59
1,550
YES
NO
NO
YES
YES
NO
YES
YES
YES
YES
24hr ON/OFF
YES
L.C.D Wireless
3/8"(9.52)
5/8"(15.88)
YES
YES
2.5, 0.75mm2
2.5mm2
Model Name
Unit
Indoor
Outdoor
Indoor
Outdoor
Cooling
Heating
Cooling
Heating
Cooling
Heating
Cooling
Heating
Indoor
Outdoor
Indoor
Outdoor
Indoor
Outdoor
Liquid
Gas
Dimensions
(W x H x D)
Item
LS-
K1862CL/CM/CN LS- K1862HL/HM/HN LS-
K2462CL/CM/CN LS- K2462HL/HM/CN

- 10 -
Cooling Capacity BTU/h(kcal/h)
W
Heating Capacity BTU/h(kcal/h)
W
Moisture Removal l/h
Power Source Ø, V, Hz
Air Circulation m3/min
Noise Level dB(A)
Input W
Runnig Current A
Starting Current
A
E.E.R. BTU/h-W
C.O.P W/W
Motor Output W
mm
Net. Weight kg
Refrigerant(R-22) g
Airflow Direction Control (Up & Down)
Airflow Direction Control (Right & Left)
Negative lon
Air Purifying Filter
Deicer
Hot Start
Chaos Wind
Micom Dry
Timer
Self Diagnosis
Remocon type
Service valve
Sleeping Operation
Drain Hose
Connecting Cable
Power Cord
24,000(6,048)
7,032
-
-
3.5
1Ø, 220V, 60Hz
15.5
48
42±3
54±3
2,100
-
9.8
-
61
-
10.5
-
35
78
1,080 x 314 x 181
870 x 655 x 320
12
58
1,580
YES
NO
NO
YES
NO
NO
YES
YES
24hr ON/OFF
YES
L.C.D Wireless
1/4"(6.35)
5/8"(15.88)
YES
YES
2.5mm2
2.5mm2
24,000(6,048)
7,032
24,000(6,048)
7,032
3.5
1Ø, 220V, 60Hz
16
48
44±3
55±3
2,525
2,525
12.0
12.0
70
70
9.5
2.78
35
78
1,080 x 314 x 181
870 x 655 x 320
12
65
1,610
YES
NO
NO
YES
YES
YES
YES
YES
24hr ON/OFF
YES
L.C.D Wireless
1/4"(6.35)
5/8"(15.88)
YES
YES
2.5, 0.75mm2
2.5mm2
18,000(4,536)
5,274
-
-
2.5
1Ø, 220V, 60Hz
14
42
40
51
1,900
-
8.9
-
52
-
9.47
-
21
60
1,080 x 314 x 181
870 x 655 x 320
12
57
870
YES
NO
NO
YES
NO
NO
YES
YES
24hr ON/OFF
YES
L.C.D Wireless
1/4"(6.35)
5/8"(15.88)
YES
YES
1.5mm2
1.5mm2
18,000(4,536)
5,274
19,000(4,788)
5,564
2.5
1Ø, 220V, 60Hz
14
42
40
51
1,800
1,900
8.5
8.9
52
52
10.0
2.93
21
60
1,080 x 314 x 181
870 x 655 x 320
12
58
1,360
YES
NO
NO
YES
YES
YES
YES
YES
24hr ON/OFF
YES
L.C.D Wireless
1/4"(6.35)
5/8"(15.88)
YES
YES
1.5, 0.75mm2
1.5mm2
Model Name
Unit
Indoor
Outdoor
Indoor
Outdoor
Cooling
Heating
Cooling
Heating
Cooling
Heating
Cooling
Heating
Indoor
Outdoor
Indoor
Outdoor
Indoor
Outdoor
Liquid
Gas
Dimensions
(W x H x D)
Item
LS-
K2422CL/CM/CN LS- K2422HL/HM/HN LS-
K1822CL/CM/CN LS- K1822HL/HM/HN

- 11 -
Cooling Capacity BTU/h(kcal/h)
W
Heating Capacity BTU/h(kcal/h)
W
Moisture Removal l/h
Power Source Ø, V, Hz
Air Circulation m3/min
Noise Level dB(A)
Input W
Runnig Current A
Starting Current
A
E.E.R. BTU/h-W
C.O.P W/W
Motor Output W
mm
Net. Weight kg
Refrigerant(R-22) g
Airflow Direction Control (Up & Down)
Airflow Direction Control (Right & Left)
Negative lon
Air Purifying Filter
Deicer
Hot Start
Chaos Wind
Micom Dry
Timer
Self Diagnosis
Remocon type
Service valve
Sleeping Operation
Drain Hose
Connecting Cable
Power Cord
26,000
7,032
-
-
2.5
1Ø, 220-240V, 50Hz
16
42
44
54
2,470
-
11.3
-
52
-
9.7
-
35
83
1,080 x 314 x 181
870 x 655 x 320
12
57
1,520
YES
YES
YES
YES
NO
NO
YES
YES
24hr ON/OFF
YES
L.C.D Wireless
3/8"(9.52)
5/8"(15.88)
YES
YES
2.5mm2
2.5mm2
26,000
7,032
24,000(6,040)
7,032
2.5
1Ø, 220-240V, 50Hz
16
42
44
54
2,670
2,610
12.2
11.9
53
53
9.0
2.635
35
83
1,080 x 314 x 181
870 x 655 x 320
12
59
1,300
YES
YES
YES
YES
YES
YES
YES
YES
24hr ON/OFF
YES
L.C.D Wireless
3/8"(9.52)
5/8"(15.88)
YES
YES
2.5, 0.75mm2
2.5mm2
26,000
7,032
-
-
3.5
1Ø, 220V, 60Hz
15.5
48
42±3
54±3
2,100
-
9.8
-
61
-
10.5
-
35
78
1,080 x 314 x 181
870 x 655 x 320
12
58
1,580
YES
YES
YES
YES
NO
NO
YES
YES
24hr ON/OFF
YES
L.C.D Wireless
1/4"(6.35)
5/8"(15.88)
YES
YES
2.5mm2
2.5mm2
26,000
7,032
24,000(6,048)
7,032
3.5
1Ø, 220V, 60Hz
16
48
44±3
55±3
2,525
2,525
12.0
12.0
70
70
9.5
2.78
35
78
1,080 x 314 x 181
870 x 655 x 320
12
65
1,610
YES
YES
YES
YES
YES
YES
YES
YES
24hr ON/OFF
YES
L.C.D Wireless
1/4"(6.35)
5/8"(15.88)
YES
YES
2.5, 0.75mm2
2.5mm2
Model Name
Unit
Indoor
Outdoor
Indoor
Outdoor
Cooling
Heating
Cooling
Heating
Cooling
Heating
Cooling
Heating
Indoor
Outdoor
Indoor
Outdoor
Indoor
Outdoor
Liquid
Gas
Dimensions
(W x H x D)
Item
LS-
K2662CL/CM/CN LS- K2662HL/HM/HN LS-
K2622CL/CM/CN LS- K2622HL/HM/HN

(1) Indoor Unit
- 12 -
Dimensions
Tubing hole cover
Tubing hole cover
Installation plate
DW
H
W
H
Tubing hole cover
Tubing hole cover
Installation plate
D
MODEL ALL MODELS
DIMENSION
W mm 1,080
H mm 314
D mm 181

- 13 -
W
L7 L6 L8 L9
D
L1
L2
L3
L10L11
L4L5
H
Gas side
3-way valve
Liquid side
2-way valve
(2) Outdoor Unit
MODEL
DIM
W mm 870
H mm 655
D mm 320
L1 mm 370
L2 mm 340
L3 mm 25
L4 mm 630
L5 mm 25
L6 mm 546
L7 mm 162
L8 mm 162
L9 mm 54
L10 mm 74.5
L11 mm 79
ALL MODELS

- 14 -
Refrigeration Cycle Diagram
INDOOR UNIT OUTDOOR UNIT
INDOOR UNIT OUTDOOR UNIT
HEAT
EXCHANGE
(EVAPORATOR)
HEAT
EXCHANGE
(EVAPORATOR)
HEAT
EXCHANGE
(CONDENSER)
HEAT
EXCHANGE
(CONDENSER)
COMPRESSOR
COMPRESSOR
ACCUMU
LATOR
GAS SIDE
GAS SIDE
3-WAY VALVE
LIQUID SIDE
LIQUID SIDE
2-WAY VALVE
CAPILLARY TUBE
CAPILLARY TUBE
CHECK VALVE
(Heating Model only)
COOLING
HEATING
REVERSING
VALVE
(Heating Model Only)
(1) Cooling Only Models
(2) Cooling & Heating Models

- 15 -
W
L7 L6 L8 L9
D
L1
L2
L3
L10L11
L4L5
H
Gas side
3-way valve
Liquid side
2-way valve
(2) Outdoor Unit
MODEL
DIM
W mm 870
H mm 655
D mm 320
L1 mm 370
L2 mm 340
L3 mm 25
L4 mm 630
L5 mm 25
L6 mm 546
L7 mm 162
L8 mm 162
L9 mm 54
L10 mm 74.5
L11 mm 79
ALL MODELS

- 16 -
Pipe length and the elevation
* Capicity is based on standard length and maximum allowance length is the basis of
reliability.
* Oil trap should be installed per 5~7 meters.
* Numerical value in "( )" is for Rotary Comp. model.
CAUTION
Outdoor unit
Indoor unit
A
B
A
Oil trap
Outdoor unit
Indoor unit B
In case more than 5m
18K(60Hz) 5/8" 1/4" 5 10 20 20
18K(50Hz) 1/2" 1/4" 5 15 30 30
24K(60Hz) 5/8" 1/4" 5 15 30 30
24K(50Hz) 5/8" 3/8" 5 15 30 30
Pipe Size
Capacity
(Btu/h) GAS LIQUID
Additional
Refrigerant
(g/m)
Max.
Length
A (m)
Max.
Elevation
B (m)
Standard
Length
(m)

- 17 -
Wiring Diagram
(1) Indoor Unit
1. LS-K1820/1860/1861/2420/2460/2621/2661CL/CM/CN, LS-K1863DL
2. LS-K1820/1860/1861/1865/2420/2460/2621/2661HL/HM/HN
3854A90003L
INDOOR WIRING DIAGRAM
CN-DISP1
FUSE
AC250V/T2A
CN-TH1
SSR
SH-CAPA.
BR
GN/YL
BR
YL
OR
BK
CN-TAB1CN-TAB2
RY-COMP.
ZNR
CN-MOTOR
THERMISTOR
FORCED
OPERATION
AUTO
RESTART
REMOTE
CONTROL
MOTOR
MAIN PCB
ASM
DISPLAY PCB ASM
POWER
TO OUTDOOR UNIT
PILLAR
TERMINAL
BR
BL
GN/YL
BR
BL
GN/YL
1(L)2(N)
3 4
BL
CN-U/D
STEP
MOTOR
CN-L/R
STEP
MOTOR
WH
ION
H.V.B GN
(GN/YL)
OPTION
3854A90003J
INDOOR WIRING DIAGRAM
CN-DISP1
CN-U/D
FUSE
AC250V/T2A
CN-TH1
SSR
SH-CAPA.
BR
GN/YL
BL
BR
YL
OR
BK
CN-TAB1CN-TAB2
CN-4WAY
RY-COMP.
ZNR
RY-4WAY
RY-FAN
CN-MOTOR
THERMISTOR
FORCED
OPERATION
AUTO
RESTART
REMOTE
CONTROL
STEP
MOTOR
CN-L/R
STEP
MOTOR
MOTOR
MAIN PCB
ASM
DISPLAY PCB ASM
POWER
TO OUTDOOR UNIT
PILLAR
TERMINAL
BR
BL
RD
BK
GN/YL
BR
BL
RD
BK
GN/YL
1(L)2(N)
3 4
4
3
WH
ION
H.V.B GN
(GN/YL)
OPTION

- 18 -
3. LS-K1822/1862/2422/2462/2662CL/CM/CN
4. LS-K1822/1862/1866/2422/2462/2662HL/HM/HN
3854A90003U
INDOOR WIRING DIAGRAM
CN-DISP1
FUSE
AC250V/T2A
CN-TH1
SSR
SH-CAPA.
BR
GN/YL
BR
YL
OR
BK
CN-TAB1CN-TAB2
RY-COMP.
ZNR
CN-MOTOR
THERMISTOR
FORCED
OPERATION
AUTO
RESTART
REMOTE
CONTROL
MOTOR
MAIN PCB
ASM
DISPLAY PCB ASM
POWER
TO OUTDOOR UNIT
PILLAR
TERMINAL
BR
BL
GN/YL
BR
BL
GN/YL
1(L)2(N)
3 4
BL
CN-U/D
STEP
MOTOR
CN-L/R
STEP
MOTOR
RD
H.V.B A/CL
OPTION
BK
BK BK
BK
BK BK
LIMIT
S/W
3854A90003V
INDOOR WIRING DIAGRAM
CN-DISP1
CN-U/D
FUSE
AC250V/T2A
CN-TH1
SSR
SH-CAPA.
BR
GN/YL
BL
BR
YL
OR
BK
CN-TAB1CN-TAB2
CN-4WAY
RY-COMP.
ZNR
RY-4WAY
RY-FAN
CN-MOTOR
THERMISTOR
FORCED
OPERATION
AUTO
RESTART
REMOTE
CONTROL
STEP
MOTOR
MOTOR
MAIN PCB
ASM
DISPLAY PCB ASM
POWER
TO OUTDOOR UNIT
PILLAR
TERMINAL
BR
BL
RD
BK
GN/YL
BR
BL
RD
BK
GN/YL
1(L)2(N)
3 4
4
3
CN-L/R
STEP
MOTOR
RD
H.V.B A/CL
OPTION
BK
BK BK
BK
BK BK
LIMIT
S/W

- 19 -
R
S
CF
H
C
COMP.
TO INDOOR UNIT
OUTDOOR WIRING DIAGRAM
MOTOR
FAN
BR
OPTION
PTC
CAPACITOR
YL
TP
RD
TERMINAL
BLOCK
3854AR2735F
BR(OR)
BR BL
BK
YL
GN/YL
GN/YL
GN/YL
1(L) 2(N)
(2) Outdoor Unit
1. LS-K1820/1860/1861/1862/2420/2422/2460/2462/2621/2622/2661/2662CL/CM/CN/CN
LS-K1863DL
2. LS-K1820/1822/1865/1866/HL/HM/HN
3854A90003K
OUTDOOR WIRING DIAGRAM
TO OUTDOOR UNIT
TERMINAL
BLOCK
CAPACITOR
PTC
BR
BL
RD
BK
GN/YL
GN/YL
BR
BL
RD
BK
GN/YL
1(L)2(N)
3 4
COMP. FAN
MOTOR
BR
HCF
R
S
C
RD
T / B 1 BR(OR)
BK
(RD)
YL
BK
YL
T / B 2
REVERSING
VALVE

3. LS-K1860/1861/1862/2420/2460/2621/2661HL/HM/HN
- 20 -
3854A90003M
OUTDOOR WIRING DIAGRAM
TO OUTDOOR UNIT
TERMINAL
BLOCK
CAPACITOR
PTC
BR
BL
RD
BK
GN/YL
GN/YL
BR
BL
RD
BK
GN/YL
1(L)2(N)
3 4
COMP. FAN
MOTOR
BR
HCF
R
S
C
RD
RD
BR
T/B 3
T/B 4
HEATER
RD
T / B 1
BR(OR)
BK(RD)
BK(RD)
YL
BK
YL
T / B 2
REVERSING
VALVE