LG LS-K1820HM, LS-K1820CN, LS-K1820HN, LS-K1822CM, LS-K1822CN Service 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°C

Heating

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(OPTION)

NO

YES

24hr ON/OFF

YES

L.C.D Wireless

1/4"(6.35)

1/2"(12.7)

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

8.7

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(OPTION)

YES

24hr ON/OFF

YES

L.C.D Wireless

1/4"(6.35)

1/2"(12.7)

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

YES

24hr ON/OFF

YES

L.C.D Wireless

1/4"(6.35)

5/8"(15.88)

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

10.0

2.93

21

60

1,080 x 314 x 181

870 x 655 x 320

12

58

1,360

YES

NO

YES

24hr ON/OFF

YES

L.C.D Wireless

1/4"(6.35)

5/8"(15.88)

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

YES

24hr ON/OFF

YES

L.C.D Wireless

1/2"(12.7)

5/8"(15.88)

YES

1.5mm

2

1.5mm

2

Model Name

Unit

Indoor

Outdoor Indoor

Outdoor 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

1.5mm

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 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, 0.75mm

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

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, 0.75mm

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

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, 0.75mm

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-

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

2.5mm

2

2.5mm

2

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, 0.75mm

2

2.5mm

2

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

2.5mm

2

2.5mm

2

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, 0.75mm

2

2.5mm

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-

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

2.5mm

2

2.5mm

2

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, 0.75mm

2

2.5mm

2

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

2.5mm

2

2.5mm

2

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, 0.75mm

2

2.5mm

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-

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 m

3

/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 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 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, 0.75mm

2

1.5mm

2

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 YES YES

24hr ON/OFF

YES

L.C.D Wireless

3/8"(9.52)

5/8"(15.88)

YES YES

2.5mm

2

2.5mm

2

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, 0.75mm

2

2.5mm

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-

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

2.5mm

2

2.5mm

2

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, 0.75mm

2

2.5mm

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

YES

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 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, 0.75mm

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-

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

2.5mm

2

2.5mm

2

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, 0.75mm

2

2.5mm

2

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

2.5mm

2

2.5mm

2

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, 0.75mm

2

2.5mm

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-

K2662CL/CM/CN

LS-

K2662HL/HM/HN

LS-

K2622CL/CM/CN

LS-

K2622HL/HM/HN

(1) Indoor Unit

- 12 -

Dimensions

Tubing hole cover

Installation plate

D

W

H

W

H

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

HEAT EXCHANGE (EVAPORATOR)

HEAT EXCHANGE (CONDENSER)

COMPRESSOR

ACCUMU LATOR

GAS SIDE

3-WAY VALVE

LIQUID SIDE

2-WAY VALVE

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

BRBLGN/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

MAIN PCB

ASM

DISPLAY PCB ASM

POWER

TO OUTDOOR UNIT

PILLAR TERMINAL

BR

BLRDBK

GN/YL

BR

BLRDBK

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

BRBLGN/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

MAIN PCB

ASM

DISPLAY PCB ASM

POWER

TO OUTDOOR UNIT

PILLAR TERMINAL

BR

BLRDBK

GN/YL

BR

BLRDBK

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

C

F

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

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

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

BR

BL

RD

BK

GN/YL

1(L) 2(N

)

3 4

COMP.

FAN

MOTOR

BR

HCF

R

S

C

RD

BR

T/B 3

T/B 4

HEATER

RD

T / B 1

BR(OR)

BK(RD)

YL

BK

YL

T / B 2

REVERSING

VALVE

1. MAIN UNIT FUNCTION

• DISPLAY

1) C/O Model (high quality LCD remote controller supplied) Operation Indicator

• On while in appliance operation, off while in appliance pause

• Flashing while in disconnection or short in Thermistor (3 sec off / 0.5 sec on)

Sleep Timer Indicator

• On while in sleep timer mode, off when sleep timer cancel or appliance operation pause

Timer Indicator

• On while in timer mode (on/off), off when timer mode is completed or canceled

Comp. Running Incidator

• While in appliance operation, on while in outdoor unit compressor running, off while in compressor off

2) H/P Model (high quality LCD remote controller supplied) Operation Indicator

• On while in appliance operation, off while in appliance pause

• Flashing while in disconnection or short in Thermistor (3 sec off / 0.5 sec on)

Sleep Timer Indicator

• On while in sleep timer mode, off when sleep timer cancel or appliance operation pause

Timer Indicator

• On while in timer mode (on/off), off when timer mode is completed or canceled

Defrost Indicator

• Off except when hot start during heating mode operation or while in defrost control

■ Cooling Mode Operation

• When the intake air temperature reaches 0.5°CC below the setting temp, the compressor and the outdoor fan stop.

• When it reaches 0.5°C above the setting temp, they start to operate again.

Compressor ON Temp=> Setting Temp+0.5°C Compressor OFF Temp => Setting Temp-0.5°C

• While in compressor running, operating with the airflow speed set by the remote controller. While in compressor not running, operating with the low airflow speed regardless of the setting.

■

Healthy Dehumidification Mode

• When the dehumidification operation input by the remote controller is received, the intake air temperature is detected and the setting temp is automatically set according to the intake air temperature.

26°C ≤ Intake Air Temp => 25°C 24°C ≤ Intake Air Temp < 26°C => Intake Air Temp-1°C 18°C ≤ Intake Air Temp < 24°C => Intake Air Temp-0.5°C Intake Air Temp < 18° => 18°C

• While in compressor off, the indoor fan repeats low airflow speed and pause.

- 21 -

Operation Details

• While the intake air temp is between compressor on temp. and compressor off temp., 10-min dehumidification operation and 4-min compressor off repeat

Compressor ON Temp. => Setting Temp+0.5°C Compressor OFF Temp. => Setting Temp-0.5°C

• In 10-min dehumidification operation, the indoor fan operates with the low airflow speed.

■

Heating Mode Operation

• When the intake air temp reaches +3°Cabove the setting temp, the compressor is turned off. When below the setting temp, the compressor is turned on.

Compressor ON Temp. => Setting Temp. Compressor OFF Temp. => Setting Temp.+3°C

• While in compressor on, the indoor fan is off when the indoor pipe temp. is below 26®¨C , when above 28°C , it operates with the low or setting airflow speed (while in sleep mode, with the medium airflow speed).

• While in compressor off, the indoor fan is off when the indoor pipe temp is below 33°C , when above 35°C , it operates with the low airflow speed.

• If overloaded while in heating mode operation, in order to prevent the compressor from OLP operation, the outdoor fan is turned on/off according to the indoor pipe temp.

• While in defrost control, both of the indoor and outdoor fans are turned off.

■

Defrost Control (New Type Defrost Control)

• While in heating mode operation in order to protect the evaporator pipe of the outdoor unit from freezing, reversed to cooling cycle to defrost the evaporator pipe of the outdoor unit.

• Defrost control is available 60 min. later since heating mode operation started, and it will not prolong over 12 min.

• Defrost control is carried out according to the following priority order while in heating mode operation. 1st priority : Defrost control is carried out according to the indoor pipe temp 60 min. later since heating mode

operation started.

2nd priority : The temp differences between the indoor pipe temp and the intake air temp 25 min. later (∆T1)

and 60 min. later (∆T2) since heating mode operation started are measured, then defrost control is carried out according to the difference (∆T=∆T1-∆T2).

3rd priority : Defrost control is carried out according to the temp difference (∆TE=TE1-TE2) between the indoor

pipe temperatures of 25 min later (TE1) and 60 min later (TE2) after heating mode operation started.

• When the indoor pipe temp is 41°C or above, defrost control is not carried out even if the condition is one of the defrost conditions above.

• While in defrost control, the compressor is on and the indoor fan, the outdoor fan, and the 4 way valve are off.

■ Defrost Control (Fuzzy Rule applied)

• While in heating mode operation in order to protect the evaporator pipe of the outdoor unit from freezing, reversed to cooling cycle to defrost the evaporator pipe of the outdoor unit.

• After 40 min heating mode operation, at 4 min interval, whether to carry out defrost control or not and the time of defrost control are determined according to the following conditions.

1) While in heating mode operation, the maximum of the indoor pipe temperature is measured and it is compared

with the present indoor pipe temperature to get the difference of the indoor pipe temperatures (=the maximum temperature of indoor pipe ? the present temperature of indoor pipe), according to which, whether to carry out defrost control or not is determined.

- 22 -

2) According to the need of defrost control shown above and the elapsed time of heating mode operation at that moment, the defrost control time is determined.

3) When the determined time of defrost control is below 7 min, heating mode operation continues without carrying out defrost control. According to the procedure stated above, the determination is made again. When the defrost control time is 7 min or longer, defrost control is then carried out.

• While in defrost control, the minimum temp of the indoor pipe is measured and it is compared with the present

temp of the indoor pipe to get the difference of the indoor pipe temperatures (=the present temperature of the indoor pipe ? the minimum temperature of the indoor pipe). When the difference is 5°C or higher, defrost control is completed and heating mode operation is carried out.

• While in defrost control, if the defrost time determined before the start of defrost control is completed, defrost

control stops and heating mode operation is carried out regardless of the above condition.

• When the indoor pipe temp is 42°C or above, defrost control is not carried out even if the condition is one of the

defrost conditions above.

• While in defrost control, the compressor is on and the indoor fan, the outdoor fan, and the 4 way valve are off.

■ Fuzzy Operation (C/O Model)

• According to the temperature set by Fuzzy rule, when the intake air temp is 0.5°C or more below the setting

temp, the compressor is turned off. When 0.5°C or more above the setting temp, the compressor is turned on. Compressor ON Temp => Setting Temp+0.5°C Compressor OFF Temp => Setting Temp+0.5°C

• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the intake air temp at that time.

26°C ≤ Intake Air Temp => 25°C 24°C ≤ Intake Air Temp<26°C => Intake Air Temp+1°C 22°C ≤ Intake Air Temp<24°C => Intake Air Temp+0.5°C 18°C ≤ Intake Air Temp<22°C => Intake Air Temp Intake Air Temp<18°C => 18°C

• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature automatically according to the Fuzzy rule.

• While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the temperature

■ Fuzzy Operation (H/P Model)

• When any of operation mode is not selected like the moment of the power on or when 3 hrs has passed since the operation off, the operation mode is selected.

• When determining the operation mode, the compressor, the outdoor fan, and the 4 way valve are off and only the indoor fan is operated for 15 seconds. Then an operation mode is selected according to the intake air temp at that moment as follows.

24°C ≤ Inatake Air Temp => Fuzzy Operation for Cooling 21°C ≤ Inatake Air Temp<24°C => Fuzzy Operation for Dehumidification Inatake Air Temp<21°C => Fuzzy Operation for Heating

• If any of the operation modes among cooling / dehumidification / heating mode operations is carried out for 10 sec or longer before Fuzzy operation, the mode before Fuzzy operation is operated.

- 23 -

1) Fuzzy Operation for Cooling

• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C or more below the setting temp, the compressor is turned off. When 0.5°C or more above the setting temp, the compressor is turned on.

Compressor ON Temp => Setting Temp+0.5°C Compressor OFF Temp => Setting Temp+0.5°C

• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the intake air temp at that time.

26°C ≤ Intake Air Temp => 25°C 24°C ≤ Intake Air Temp<26°C => Intake Air Temp+1°C 22°C ≤ Intake Air Temp<24°C => Intake Air Temp+0.5°C 18°C ≤ Intake Air Temp<22°C => Intake Air Temp Intake Air Temp < 18°C => 18°C

• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature automatically according to the Fuzzy rule.

• While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the temperature.

2) Fuzzy Operation for Dehumidification

• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C or more below the setting temp, the compressor is turned off. When 0.5°C or more above the setting temp, the compressor is turned on.

Compressor ON Temp => Setting Temp+0.5°C Compressor OFF Temp => Setting Temp+0.5°C

• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the intake air temp at that time.

26°C ≤ Intake Air Temp => 25°C 24°C ≤ Intake Air Temp<26°C => Intake Air Temp+1°C 22°C ≤ Intake Air Temp<24°C => Intake Air Temp+0.5°C 18°C ≤ Intake Air Temp<22°C => Intake Air Temp Intake Air Temp < 18°C => 18°C

• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature automatically according to the Fuzzy rule.

• While in Fuzzy operation, the airflow speed of the indoor fan repeats the low airflow speed or pause as in dehumidification operation.

3) Fuzzy Operation for Heating

• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 3°C or more above the setting temp, the compressor is turned off. When below the setting temp, the compressor is turned on.

Compressor ON Temp => Setting Temp Compressor OFF Temp => Setting Temp + 3°C

• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the intake air temp at that time. 20°C ≤ Intake Air Temp => Intake Air Temp + 0.5°C Intake Air Temp < 20°C => 20°C

- 24 -