LG LS-K1820CL, LS-K1822CL, LS-K1860CL, LS-K1861CL, LS-K1862CL Service manual

...
4.8 (5)

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

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

- 2 -

Functions

Indoor Unit

Operation ON/OFF by Remote controller

Sensing the Room Temperature

• Room temperature sensor. (THERMISTOR)

Room temperature control

• Maintains the room temperature in accordance with the Setting Temp.

Starting Current Control

• Indoor fan is delayed for 5 sec at the starting.

Time Delay Safety Control

• Restarting is inhibited for approx. 3 minutes.

Indoor Fan Speed Control

• High, Med, Low

Operation indication Lamps (LED)

--- 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)

Soft Dry Operation Mode

• Intermittent operation of fan at low speed.

Sleep Mode Auto Control

The fan is switched to low(Cooling), med(Heating) speed.

The unit will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.

Natural Air Control by CHAOS Logic

The fan is switched to intermittent or irregular operation

The fan speed is automatically switched from high to low speed.

Airflow Direction Control

The louver can be set at the desired position or swing up and down automatically.

Deice (defrost) control (Heating)

Both the indoor and outdoor fan stops during deicing.

Hot-start Control (Heating)

The indoor fan stops until the evaporator piping temperature will be reached at 28°C.

- 3 -

Remote Controller

Operation ON/OFF

Operation Mode Selection

(Cooling (Heating model only) model only)

Cooling Operation Mode.(

)

Auto Operation Mode.(

)

Healthy Dehumidification Operation Mode.(

) Heating Operation Mode.(

)

Fan Speed Selection

 

 

 

 

(Low)

 

(Med)

(High)

(CHAOS)

Room, Temperature Display

 

 

 

: (High:39°C

Low:11°C)

 

 

Temperature Setting

 

 

 

 

TEMPERATURE LOW HIGH

 

Down to 18°C

 

Down to 16°C

Cooling

Heating

Up to 30°C

Up to 30°C

 

 

 

JET COOL

PLASMA(Option)/NEGATIVE ION(Option)

PLASMA

Setting the Time or Timer

Timer Selection

ON OFF

Timer Setting

SET

: OFF, ON, OFFON

Timer Cancel

CANCEL

Sleep Operation

: Cancel Sleep Mode, Timer ON or Timer OFF

Airflow Direction Control

: 1, 2, 3, 4, 5, 6, 7, Off Timer

Fan Operation Mode

: Fan Operates without cooling or heating.

Horizontal Airflow Direction Control Button(Option)

Reset

- 4 -

Product Specifications

 

 

Model Name

LS-

LS-

LS-

LS-

Item

Unit

 

K1860CL/CM/CN

K1860HL/HM/HN

K1820CL/CM/CN

K1820HL/HM/HN

 

 

 

 

 

 

 

 

 

 

 

 

Cooling Capacity

BTU/h(kcal/h)

18,000(4,536)

18,000(4,536)

18,000(4,536)

18,000(4,536)

W

5,274

5,274

5,274

5,274

 

 

Heating Capacity

BTU/h(kcal/h)

-

19,000(4,788)

-

19,000(4,788)

W

-

5,564

-

5,564

 

 

Moisture Removal

l/h

2.5

2.5

2.5

2.5

Power Source

 

Ø, V, Hz

1Ø, 220-240V, 50Hz

1Ø, 220-240V, 50Hz

1Ø, 220V, 60Hz

1Ø, 220V, 60Hz

Air Circulation

Indoor

m3/min

12

12

14

14

Outdoor

 

 

 

 

42

42

42

42

 

 

Noise Level

Indoor

dB(A)±3

39

39

40

40

Outdoor

53

53

51

51

 

 

Input

Cooling

W

1,900

1,950

1,900

1,800

Heating

-

1,950

-

1,900

 

 

Runnig Current

Cooling

A

8.8

8.7

8.9

8.5

Heating

-

8.7

-

8.9

 

 

Starting Current

Cooling

A

52

53

52

52

Heating

 

 

 

 

-

53

-

52

E.E.R.

Cooling

BTU/h-W

9.5

9.2

9.47

10.0

C.O.P

Heating

W/W

-

2.86

-

2.93

Motor Output

Indoor

W

20

20

21

21

Outdoor

62

62

60

60

 

 

Dimensions

Indoor

mm

1,080 x 314 x 181

1,080 x 314 x 181

1,080 x 314 x 181

1,080 x 314 x 181

(W x H x D)

Outdoor

870 x 655 x 320

870 x 655 x 320

870 x 655 x 320

870 x 655 x 320

 

Net. Weight

Indoor

kg

12

12

12

12

 

Outdoor

57

59

57

58

 

 

Refrigerant(R-22)

g

820

1,270

870

1,360

Airflow Direction Control (Up & Down)

YES

YES

YES

YES

Airflow Direction Control (Right & Left)

NO

NO

NO

NO

Negative lon

 

 

NO

NO

NO

NO

Air Purifying Filter

 

NO(OPTION)

NO(OPTION)

NO

 

Deicer

 

 

NO

YES

NO

YES

Hot Start

 

 

NO

YES

NO

YES

Chaos Wind

 

 

YES

YES

YES

YES

Micom Dry

 

 

YES

YES

YES

YES

Timer

 

 

24hr ON/OFF

24hr ON/OFF

24hr ON/OFF

24hr ON/OFF

Self Diagnosis

 

 

YES

YES

YES

YES

Remocon type

 

 

L.C.D Wireless

L.C.D Wireless

L.C.D Wireless

L.C.D Wireless

Service valve

 

Liquid

1/4"(6.35)

1/4"(6.35)

1/4"(6.35)

1/4"(6.35)

 

Gas

1/2"(12.7)

1/2"(12.7)

5/8"(15.88)

5/8"(15.88)

 

 

Sleeping Operation

 

YES

YES

YES

YES

Drain Hose

 

 

YES

YES

YES

YES

Connecting Cable

 

1.5mm2

1.5, 0.75mm2

1.5mm2

1.5, 0.75mm2

Power Cord

 

 

1.5mm2

1.5mm2

1.5mm2

1.5mm2

- 5 -

 

 

Model Name

LS-

LS-

LS-

LS-

 

Unit

 

Item

 

K1861CL/CM/CN

K1861HL/HM/HN

K1865HL/HM/HN

K1866HL/HM/HN

 

 

 

 

 

 

 

Cooling Capacity

BTU/h(kcal/h)

18,000(4,536)

18,000(4,536)

18,000(4,536)

18,000(4,536)

W

5,274

5,274

5,274

5,274

 

 

Heating Capacity

BTU/h(kcal/h)

-

19,000(4,788)

19,000(4,788)

19,000(4,788)

 

 

 

 

 

W

-

5,564

5,564

5,564

 

 

Moisture Removal

l/h

2.5

2.5

2.5

2.5

 

 

 

 

 

 

 

Power Source

 

Ø, V, Hz

1Ø, 220-240V, 50Hz

1Ø, 220-240V, 50Hz

1Ø, 220-240V, 50Hz

1Ø, 220-240V, 50Hz

 

 

 

 

 

 

 

Air Circulation

Indoor

m3/min

12

12

12

12

Outdoor

 

 

 

 

42

42

42

42

 

 

 

 

 

 

 

 

 

Noise Level

Indoor

dB(A)±3

39

39

39

39

Outdoor

53

53

53

53

 

 

Input

Cooling

W

1,900

1,950

1,950

1,950

Heating

-

1,950

1,950

1,950

 

 

Runnig Current

Cooling

A

8.8

8.7

9.2

9.2

Heating

-

8.7

9.2

9.2

 

 

Starting Current

Cooling

A

52

53

53

53

Heating

 

 

 

 

-

53

53

53

E.E.R.

Cooling

BTU/h-W

9.5

9.2

9.2

9.2

C.O.P

Heating

W/W

-

2.86

2.86

2.86

 

 

 

 

 

 

 

Motor Output

Indoor

W

20

20

20

20

Outdoor

62

62

62

62

 

 

 

 

 

 

 

 

 

Dimensions

Indoor

mm

1,080 x 314 x 181

1,080 x 314 x 181

1,080 x 314 x 181

1,080 x 314 x 181

 

 

 

 

 

 

(W x H x D)

Outdoor

870 x 655 x 320

870 x 655 x 320

870 x 655 x 320

870 x 655 x 320

 

 

 

 

 

 

 

 

Net. Weight

Indoor

kg

12

12

12

12

Outdoor

57

59

59

59

 

 

Refrigerant(R-22)

g

820

1,270

1,470

1,470

Airflow Direction Control (Up & Down)

YES

YES

YES

YES

Airflow Direction Control (Right & Left)

YES

YES

NO

NO

Negative lon

 

 

YES

YES

NO

NO

Air Purifying Filter

 

YES

YES

NO(OPTION)

NO(OPTION)

Plasma Filter

 

 

NO

NO

NO

YES

Deicer

 

 

NO

YES

YES

YES

Hot Start

 

 

NO

YES

YES

YES

Chaos Wind

 

 

YES

YES

YES

YES

Micom Dry

 

 

YES

YES

YES

YES

Timer

 

 

24hr ON/OFF

24hr ON/OFF

24hr ON/OFF

24hr ON/OFF

Self Diagnosis

 

 

YES

YES

YES

YES

Remocon type

 

 

L.C.D Wireless

L.C.D Wireless

L.C.D Wireless

L.C.D Wireless

Service valve

 

Liquid

1/4"(6.35)

1/4"(6.35)

1/4"(6.35)

1/4"(6.35)

 

 

 

 

 

 

 

Gas

1/2"(12.7)

1/2"(12.7)

1/2"(12.7)

1/2"(12.7)

 

 

Sleeping Operation

 

YES

YES

YES

YES

Drain Hose

 

 

YES

YES

YES

YES

Connecting Cable

 

1.5mm2

1.5, 0.75mm2

1.5, 0.75mm2

1.5, 0.75mm2

Power Cord

 

 

1.5mm2

1.5mm2

1.5mm2

1.5mm2

- 6 -

 

 

Model Name

LS-

LS-

LS-

LS-

Item

Unit

 

K2460CL/CM/CN

K2460HL/HM/HN

K2420CL/CM/CN

K2420HL/HM/HN

 

 

 

 

 

 

 

 

 

 

 

 

Cooling Capacity

BTU/h(kcal/h)

24,000(6,048)

24,000(6,048)

24,000(6,048)

24,000(6,048)

W

7,032

7,032

7,032

7,032

 

 

Heating Capacity

BTU/h(kcal/h)

-

24,000(6,040)

-

24,000(6,048)

W

-

7,032

-

7,032

 

 

Moisture Removal

l/h

2.5

2.5

3.5

3.5

Power Source

 

Ø, V, Hz

1Ø, 220-240V, 50Hz

1Ø, 220-240V, 50Hz

1Ø, 220V, 60Hz

1Ø, 220V, 60Hz

Air Circulation

Indoor

m3/min

16

16

15.5

16

Outdoor

 

 

 

 

42

42

48

48

 

 

Noise Level

Indoor

dB(A)

44

44

42±3

44±3

Outdoor

54

54

54±3

55±3

 

 

Input

Cooling

W

2,470

2,670

2,100

2,525

Heating

-

2,610

-

2,525

 

 

Runnig Current

Cooling

A

11.3

12.2

9.8

12.0

Heating

-

11.9

-

12.0

 

 

Starting Current

Cooling

A

52

53

61

70

Heating

 

 

 

 

-

53

-

70

E.E.R.

Cooling

BTU/h-W

9.7

9.0

10.5

9.5

C.O.P

Heating

W/W

-

2.635

-

2.78

Motor Output

Indoor

W

35

35

35

35

Outdoor

83

83

78

78

 

 

Dimensions

Indoor

mm

1,080 x 314x 181

1,080 x 314 x 181

1,080 x 314 x 181

1,080 x 314 x 181

(W x H x D)

Outdoor

870 x 655 x 320

870 x 655 x 320

870 x 655 x 320

870 x 655 x 320

 

Net. Weight

Indoor

kg

12

12

12

12

 

Outdoor

57

59

58

65

 

 

 

 

 

Refrigerant(R-22)

g

1,520

1,300

1,580

1,610

Airflow Direction Control (Up & Down)

YES

YES

YES

YES

Airflow Direction Control (Right & Left)

NO

NO

NO

NO

Negative lon

 

 

NO

NO

NO

NO

Air Purifying Filter

 

NO(OPTION)

NO(OPTION)

NO(OPTION)

NO(OPTION)

Deicer

 

 

NO

YES

NO

YES

Hot Start

 

 

NO

YES

NO

YES

Chaos Wind

 

 

YES

YES

YES

YES

Micom Dry

 

 

YES

YES

YES

YES

Timer

 

 

24hr ON/OFF

24hr ON/OFF

24hr ON/OFF

24hr ON/OFF

Self Diagnosis

 

 

YES

YES

YES

YES

Remocon type

 

 

L.C.D Wireless

L.C.D Wireless

L.C.D Wireless

L.C.D Wireless

Service valve

 

Liquid

3/8"(9.52)

3/8"(9.52)

1/4"(6.35)

1/4"(6.35)

 

 

 

Gas

5/8"(15.88)

5/8"(15.88)

5/8"(15.88)

5/8"(15.88)

 

 

 

 

 

Sleeping Operation

 

YES

YES

YES

YES

Drain Hose

 

 

YES

YES

YES

YES

Connecting Cable

 

2.5mm2

2.5, 0.75mm2

2.5mm2

2.5, 0.75mm2

Power Cord

 

 

2.5mm2

2.5mm2

2.5mm2

2.5mm2

- 7 -

 

 

 

Model Name

LS-

LS-

LS-

LS-

Item

Unit

K2661CL/CM/CN

K2661HL/HM/HN

K2621CL/CM/CN

K2621HL/HM/HN

 

 

 

 

 

 

 

 

 

 

 

 

 

Cooling Capacity

BTU/h(kcal/h)

26,000

26,000

26,000

26,000

W

7,032

7,032

7,032

7,032

 

 

 

Heating Capacity

BTU/h(kcal/h)

-

24,000(6,040)

-

24,000(6,048)

W

-

7,032

-

7,032

 

 

 

Moisture Removal

l/h

2.5

2.5

3.5

3.5

Power Source

 

Ø, V, Hz

1Ø, 220-240V, 50Hz

1Ø, 220-240V, 50Hz

1Ø, 220V, 60Hz

1Ø, 220V, 60Hz

Air Circulation

Indoor

m3/min

16

16

15.5

16

Outdoor

 

 

 

 

42

42

48

48

 

 

 

 

Noise Level

Indoor

dB(A)

 

44

44

42±3

44±3

Outdoor

 

54

54

54±3

55±3

 

 

 

 

Input

 

Cooling

W

2,470

2,670

2,100

2,525

 

Heating

-

2,610

-

2,525

 

 

 

 

Runnig Current

 

Cooling

A

11.3

12.2

9.8

12.0

 

Heating

-

11.9

-

12.0

 

 

 

 

Starting Current

 

Cooling

A

52

53

61

70

 

Heating

 

 

 

 

-

53

-

70

E.E.R.

Cooling

BTU/h-W

9.7

9.0

10.5

9.5

C.O.P

Heating

W/W

-

2.635

-

2.78

Motor Output

 

Indoor

W

35

35

35

35

 

Outdoor

83

83

78

78

 

 

 

 

Dimensions

Indoor

mm

 

1,080 x 314 x 181

1,080 x 314 x 181

1,080 x 314 x 181

1,080 x 314 x 181

(W x H x D)

Outdoor

 

870 x 655 x 320

870 x 655 x 320

870 x 655 x 320

870 x 655 x 320

 

 

Net. Weight

Indoor

kg

12

12

12

12

 

Outdoor

57

59

58

65

 

 

 

 

 

 

 

 

 

Refrigerant(R-22)

g

1,520

1,300

1,580

1,610

Airflow Direction Control (Up & Down)

YES

YES

YES

YES

Airflow Direction Control (Right & Left)

YES

YES

YES

YES

Negative lon

 

 

 

YES

YES

YES

YES

Air Purifying Filter

 

 

YES

YES

YES

YES

Deicer

 

 

 

NO

YES

NO

YES

Hot Start

 

 

 

NO

YES

NO

YES

Chaos Wind

 

 

 

YES

YES

YES

YES

Micom Dry

 

 

 

YES

YES

YES

YES

Timer

 

 

 

24hr ON/OFF

24hr ON/OFF

24hr ON/OFF

24hr ON/OFF

Self Diagnosis

 

 

 

YES

YES

YES

YES

Remocon type

 

 

 

L.C.D Wireless

L.C.D Wireless

L.C.D Wireless

L.C.D Wireless

Service valve

 

Liquid

3/8"(9.52)

3/8"(9.52)

1/4"(6.35)

1/4"(6.35)

 

 

 

 

Gas

5/8"(15.88)

5/8"(15.88)

5/8"(15.88)

5/8"(15.88)

 

 

 

 

 

 

 

 

Sleeping Operation

 

 

YES

YES

YES

YES

Drain Hose

 

 

 

YES

YES

YES

YES

Connecting Cable

 

 

2.5mm2

2.5, 0.75mm2

2.5mm2

2.5, 0.75mm2

Power Cord

 

 

 

2.5mm2

2.5mm2

2.5mm2

2.5mm2

- 8 -

 

 

 

 

Model Name

LS-

LS-

LS-

LS-

Item

Unit

 

 

K1862CL/CM/CN

K1862HL/HM/HN

K2462CL/CM/CN

K2462HL/HM/CN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Cooling Capacity

 

 

BTU/h(kcal/h)

18,000(4,536)

18,000(4,536)

24,000(6,048)

24,000(6,048)

 

 

 

 

W

5,274

5,274

7,032

7,032

Heating Capacity

 

 

BTU/h(kcal/h)

-

19,000(4,788)

-

24,000(6,048)

 

 

 

 

W

-

5,564

-

7,032

Moisture Removal

 

 

l/h

2.5

2.5

2.5

2.5

Power Source

 

 

Ø, V, Hz

1Ø, 220-240V, 50Hz

1Ø, 220-240V, 50Hz

1Ø, 220-240V, 50Hz

1Ø, 220-240V, 50Hz

Air Circulation

Indoor

m3/min

12

12

16

16

Outdoor

42

42

42

42

 

 

 

 

Noise Level

Indoor

dB(A)±3

39

39

44

44

Outdoor

53

53

54

54

 

 

 

 

Input

 

Cooling

 

W

1,900

1,950

2,470

2,670

 

Heating

-

1,950

-

2,610

 

 

 

 

Runnig Current

 

Cooling

A

8.8

8.7

11.3

12.2

 

Heating

-

8.7

-

11.9

 

 

 

 

Starting Current

 

Cooling

A

52

53

52

53

 

Heating

-

53

-

53

 

 

 

 

E.E.R.

Cooling

BTU/h-W

9.5

9.2

9.7

9.0

C.O.P

Heating

W/W

-

2.86

-

2.635

Motor Output

 

Indoor

W

 

20

20

35

35

 

Outdoor

 

62

62

83

83

 

 

 

 

Dimensions

Indoor

mm

1,080 x 314 x 181

1,080 x 314 x 181

1,080 x 314 x 181

1,080 x 314 x 181

(W x H x D)

Outdoor

870 x 655 x 320

870 x 655 x 320

870 x 655 x 320

870 x 655 x 320

 

 

Net. Weight

Indoor

kg

12

12

12

12

Outdoor

57

59

57

59

 

 

 

 

Refrigerant(R-22)

 

 

g

820

1,270

1,520

1,550

Airflow Direction Control (Up & Down)

YES

YES

YES

YES

Airflow Direction Control (Right & Left)

NO

NO

NO

NO

Negative lon

 

 

 

 

NO

NO

NO

NO

Air Purifying Filter

 

 

 

 

YES

YES

YES

YES

Plasma Filter

 

 

 

 

YES

YES

YES

YES

Soft Start

 

 

 

 

NO

NO

NO

NO

Deicer

 

 

 

 

NO

YES

NO

YES

Hot Start

 

 

 

 

NO

YES

NO

YES

Chaos Wind

 

 

 

 

YES

YES

YES

YES

Micom Dry

 

 

 

 

YES

YES

YES

YES

Timer

 

 

 

 

24hr ON/OFF

24hr ON/OFF

24hr ON/OFF

24hr ON/OFF

Self Diagnosis

 

 

 

 

YES

YES

YES

YES

Remocon type

 

 

 

 

L.C.D Wireless

L.C.D Wireless

L.C.D Wireless

L.C.D Wireless

Service valve

 

 

Liquid

1/4"(6.35)

1/4"(6.35)

3/8"(9.52)

3/8"(9.52)

 

 

Gas

1/2"(12.7)

1/2"(12.7)

5/8"(15.88)

5/8"(15.88)

 

 

 

 

Sleeping Operation

 

 

YES

YES

YES

YES

Drain Hose

 

 

 

 

YES

YES

YES

YES

Connecting Cable

 

 

 

 

1.5mm2

1.5, 0.75mm2

2.5mm2

2.5, 0.75mm2

Power Cord

 

 

 

 

1.5mm2

1.5mm2

2.5mm2

2.5mm2

- 9 -

 

 

 

Model Name

LS-

LS-

LS-

LS-

Item

Unit

 

 

K2422CL/CM/CN

K2422HL/HM/HN

K1822CL/CM/CN

K1822HL/HM/HN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Cooling Capacity

BTU/h(kcal/h)

24,000(6,048)

24,000(6,048)

18,000(4,536)

18,000(4,536)

W

7,032

7,032

5,274

5,274

 

 

 

Heating Capacity

BTU/h(kcal/h)

-

24,000(6,048)

-

19,000(4,788)

W

-

7,032

-

5,564

 

 

 

Moisture Removal

l/h

3.5

3.5

2.5

2.5

Power Source

 

Ø, V, Hz

1Ø, 220V, 60Hz

1Ø, 220V, 60Hz

1Ø, 220V, 60Hz

1Ø, 220V, 60Hz

Air Circulation

Indoor

m3/min

15.5

16

14

14

Outdoor

 

 

 

 

48

48

42

42

 

 

 

 

Noise Level

Indoor

dB(A)

 

42±3

44±3

40

40

Outdoor

 

54±3

55±3

51

51

 

 

 

 

Input

 

Cooling

W

2,100

2,525

1,900

1,800

 

Heating

-

2,525

-

1,900

 

 

 

 

Runnig Current

 

Cooling

A

9.8

12.0

8.9

8.5

 

Heating

-

12.0

-

8.9

 

 

 

 

Starting Current

 

Cooling

A

61

70

52

52

 

Heating

 

 

 

 

-

70

-

52

E.E.R.

Cooling

BTU/h-W

10.5

9.5

9.47

10.0

C.O.P

Heating

W/W

-

2.78

-

2.93

Motor Output

 

Indoor

W

35

35

21

21

 

Outdoor

78

78

60

60

 

 

 

 

Dimensions

Indoor

mm

 

1,080 x 314 x 181

1,080 x 314 x 181

1,080 x 314 x 181

1,080 x 314 x 181

(W x H x D)

Outdoor

 

870 x 655 x 320

870 x 655 x 320

870 x 655 x 320

870 x 655 x 320

 

 

Net. Weight

Indoor

kg

12

12

12

12

 

Outdoor

58

65

57

58

 

 

 

 

 

 

 

 

 

Refrigerant(R-22)

g

1,580

1,610

870

1,360

Airflow Direction Control (Up & Down)

YES

YES

YES

YES

Airflow Direction Control (Right & Left)

NO

NO

NO

NO

Negative lon

 

 

 

NO

NO

NO

NO

Air Purifying Filter

 

 

YES

YES

YES

YES

Deicer

 

 

 

NO

YES

NO

YES

Hot Start

 

 

 

NO

YES

NO

YES

Chaos Wind

 

 

 

YES

YES

YES

YES

Micom Dry

 

 

 

YES

YES

YES

YES

Timer

 

 

 

24hr ON/OFF

24hr ON/OFF

24hr ON/OFF

24hr ON/OFF

Self Diagnosis

 

 

 

YES

YES

YES

YES

Remocon type

 

 

 

L.C.D Wireless

L.C.D Wireless

L.C.D Wireless

L.C.D Wireless

Service valve

 

Liquid

1/4"(6.35)

1/4"(6.35)

1/4"(6.35)

1/4"(6.35)

 

 

 

 

Gas

5/8"(15.88)

5/8"(15.88)

5/8"(15.88)

5/8"(15.88)

 

 

 

 

 

 

 

 

Sleeping Operation

 

 

YES

YES

YES

YES

Drain Hose

 

 

 

YES

YES

YES

YES

Connecting Cable

 

 

2.5mm2

2.5, 0.75mm2

1.5mm2

1.5, 0.75mm2

Power Cord

 

 

 

2.5mm2

2.5mm2

1.5mm2

1.5mm2

- 10 -

 

 

Model Name

LS-

LS-

LS-

LS-

Item

Unit

K2662CL/CM/CN

K2662HL/HM/HN

K2622CL/CM/CN

K2622HL/HM/HN

 

 

 

 

 

 

 

 

 

 

 

Cooling Capacity

BTU/h(kcal/h)

26,000

26,000

26,000

26,000

W

7,032

7,032

7,032

7,032

 

 

Heating Capacity

BTU/h(kcal/h)

-

24,000(6,040)

-

24,000(6,048)

W

-

7,032

-

7,032

 

 

Moisture Removal

l/h

2.5

2.5

3.5

3.5

Power Source

 

Ø, V, Hz

1Ø, 220-240V, 50Hz

1Ø, 220-240V, 50Hz

1Ø, 220V, 60Hz

1Ø, 220V, 60Hz

Air Circulation

Indoor

m3/min

16

16

15.5

16

Outdoor

 

 

 

 

42

42

48

48

 

 

Noise Level

Indoor

dB(A)

44

44

42±3

44±3

Outdoor

54

54

54±3

55±3

 

 

Input

Cooling

W

2,470

2,670

2,100

2,525

Heating

-

2,610

-

2,525

 

 

Runnig Current

Cooling

A

11.3

12.2

9.8

12.0

Heating

-

11.9

-

12.0

 

 

Starting Current

Cooling

A

52

53

61

70

Heating

 

 

 

 

-

53

-

70

E.E.R.

Cooling

BTU/h-W

9.7

9.0

10.5

9.5

C.O.P

Heating

W/W

-

2.635

-

2.78

Motor Output

Indoor

W

35

35

35

35

Outdoor

83

83

78

78

 

 

Dimensions

Indoor

mm

1,080 x 314 x 181

1,080 x 314 x 181

1,080 x 314 x 181

1,080 x 314 x 181

(W x H x D)

Outdoor

870 x 655 x 320

870 x 655 x 320

870 x 655 x 320

870 x 655 x 320

 

Net. Weight

Indoor

kg

12

12

12

12

 

Outdoor

57

59

58

65

 

 

 

 

 

Refrigerant(R-22)

g

1,520

1,300

1,580

1,610

Airflow Direction Control (Up & Down)

YES

YES

YES

YES

Airflow Direction Control (Right & Left)

YES

YES

YES

YES

Negative lon

 

 

YES

YES

YES

YES

Air Purifying Filter

 

YES

YES

YES

YES

Deicer

 

 

NO

YES

NO

YES

Hot Start

 

 

NO

YES

NO

YES

Chaos Wind

 

 

YES

YES

YES

YES

Micom Dry

 

 

YES

YES

YES

YES

Timer

 

 

24hr ON/OFF

24hr ON/OFF

24hr ON/OFF

24hr ON/OFF

Self Diagnosis

 

 

YES

YES

YES

YES

Remocon type

 

 

L.C.D Wireless

L.C.D Wireless

L.C.D Wireless

L.C.D Wireless

Service valve

 

Liquid

3/8"(9.52)

3/8"(9.52)

1/4"(6.35)

1/4"(6.35)

 

 

 

Gas

5/8"(15.88)

5/8"(15.88)

5/8"(15.88)

5/8"(15.88)

 

 

 

 

 

Sleeping Operation

 

YES

YES

YES

YES

Drain Hose

 

 

YES

YES

YES

YES

Connecting Cable

 

2.5mm2

2.5, 0.75mm2

2.5mm2

2.5, 0.75mm2

Power Cord

 

 

2.5mm2

2.5mm2

2.5mm2

2.5mm2

- 11 -

Dimensions

(1) Indoor Unit

D

D

W

W

H

H

Tubing hole cover

Tubing hole cover

Tubing hole cover

Tubing hole cover

Installation plate

Installation plate

 

MODEL

ALL MODELS

DIMENSION

 

 

 

 

 

 

W

mm

1,080

 

 

 

H

mm

314

 

 

 

D

mm

181

 

 

 

- 12 -

(2) Outdoor Unit

W

D

L2

L1

 

 

 

L3

H L4 L10

 

 

 

 

L11

L5

L7

L6

L8

L9

 

 

 

 

Gas side 3-way valve

Liquid side 2-way valve

 

MODEL

ALL MODELS

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

 

 

 

- 13 -

Refrigeration Cycle Diagram

(1) Cooling Only Models

INDOOR UNIT

OUTDOOR UNIT

 

LIQUID SIDE

 

 

 

CAPILLARY TUBE

HEAT

 

HEAT

EXCHANGE

 

EXCHANGE

(EVAPORATOR)

 

(CONDENSER)

 

GAS SIDE

COMPRESSOR

 

 

(2) Cooling & Heating Models

INDOOR UNIT

OUTDOOR UNIT

LIQUID SIDE

CHECK VALVE

(Heating Model only)

2-WAY VALVE

 

 

CAPILLARY TUBE

HEAT

HEAT

EXCHANGE

EXCHANGE

(EVAPORATOR)

(CONDENSER)

GAS SIDE

 

 

 

3-WAY VALVE

ACCUMU

 

REVERSING

 

VALVE

 

 

 

LATOR

 

(Heating Model Only)

 

 

COMPRESSOR

COOLING

 

 

HEATING

 

 

 

- 14 -

(2) Outdoor Unit

W

D

L2

L1

 

 

 

L3

H L4 L10

 

 

 

 

L11

L5

L7

L6

L8

L9

 

 

 

 

Gas side 3-way valve

Liquid side 2-way valve

 

MODEL

ALL MODELS

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

 

 

 

- 15 -

Pipe length and the elevation

Capacity

Pipe Size

Standard

Max.

Max.

Additional

 

 

Length

Elevation

Length

Refrigerant

(Btu/h)

 

 

GAS

LIQUID

(m)

B (m)

A (m)

(g/m)

 

 

 

 

 

 

 

 

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

 

 

 

 

 

 

 

Outdoor unit

 

Outdoor unit

 

Oil trap

A

A

 

 

 

Indoor unit

Indoor unit

B

B

 

In case more than 5m

CAUTION

*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.

- 16 -

Wiring Diagram

(1)Indoor Unit

1.LS-K1820/1860/1861/2420/2460/2621/2661CL/CM/CN

POWER

GN/YL

MOTOR-

ASM

FORCED

AUTO

 

MAIN PCB

OPERATION

CN

SSR

RESTART

 

 

 

OR

 

 

REMOTE

MOTOR

 

 

 

CONTROL

BK

 

 

 

 

 

 

TH1

 

 

 

 

ZNR

THERMISTOR

 

 

 

 

BR

YL

 

 

CN-

TAB1

 

 

SH-CAPA.

 

U/D-CN

STEP

 

 

 

MOTOR

BR

 

CN-

 

L/R-CN

 

 

 

TAB2-CN

 

STEP

 

 

 

 

 

 

 

 

 

 

MOTOR

 

 

 

 

 

WH

 

 

 

 

 

ION

BL

 

 

 

 

H.V.B

 

 

 

 

GN

 

 

4

3

 

(GN/YL)

 

 

 

OPTION

 

 

 

 

 

 

 

 

RY-COMP. FUSE

 

 

 

AC250V/T2A

BR

BL

GN/YL

CN-DISP1

1(L) 2(N)

 

PILLAR

 

TERMINAL

BR

BL

GN/YL

DISPLAY PCB ASM

 

 

 

INDOOR WIRING DIAGRAM

TO OUTDOOR UNIT

3854A90003L

 

2. LS-K1820/1860/1861/1865/2420/2460/2621/2661HL/HM/HN

POWER

 

 

CN-MOTOR

 

 

FORCED

 

 

 

 

 

MAIN PCB

 

 

 

 

 

OPERATION

GN/YL

 

 

 

 

ASM

 

AUTO

 

 

 

 

SSR

 

RESTART

 

 

 

OR

 

REMOTE

 

 

 

 

 

 

 

MOTOR

 

 

 

CONTROL

 

 

 

 

 

 

 

 

 

 

BK

 

 

TH1

 

 

 

 

 

 

 

ZNR

THERMISTOR

 

 

 

 

 

 

 

 

 

 

BR

YL

 

 

CN-

 

 

 

 

 

 

 

 

SH-CAPA.

CN-TAB1

 

CN-U/D

STEP

 

 

 

MOTOR

 

 

BR

 

 

 

 

 

 

 

 

 

CN-TAB2

 

CN-L/R

STEP

 

 

 

 

 

 

MOTOR

 

 

BL

 

FUSE

 

 

 

 

 

 

 

 

 

 

 

 

4

3 AC250V/T2A

 

WH

 

 

 

 

 

 

 

 

ION

 

 

 

 

 

RY-COMP.

 

H.V.B

 

 

 

 

 

 

GN

 

 

 

 

 

 

 

 

(GN/YL)

 

 

 

 

 

4WAY

 

 

OPTION

 

 

 

 

 

RY-4WAY

 

 

 

 

 

 

 

CN-

 

 

 

 

 

GN/YL

 

 

 

RY-FAN

 

 

BR

BL

BK

RD

 

CN-DISP1

 

 

 

 

 

 

1(L) 2(N) 3 4 PILLARTERMINAL

BR

BL

GN/YL

BK

RD

DISPLAY PCB ASM

 

 

 

 

 

INDOOR WIRING DIAGRAM

TO OUTDOOR UNIT

3854A90003J

 

- 17 -

LG LS-K1820CL, LS-K1822CL, LS-K1860CL, LS-K1861CL, LS-K1862CL Service manual

3. LS-K1822/1862/2422/2462/2662CL/CM/CN

POWER

GN/YL

MOTOR-

ASM

 

MAIN PCB

CN

SSR

 

 

OR

MOTOR

BK

BR

YL

-CNTH1

 

 

ZNR

FORCED OPERATION

AUTO

RESTART

REMOTE

CONTROL

THERMISTOR

SH-CAPA.

BR

CN-TAB1

CN-U/D

STEP

MOTOR

 

 

TAB2-CN

 

 

L/R-CN

STEP

 

 

 

 

 

 

 

 

 

 

 

 

MOTOR

 

 

 

 

 

 

RD

 

BL

 

 

 

 

H.V.B

A/CL

 

 

 

 

 

BK

BK

 

 

4

3

 

 

 

 

 

 

 

 

 

 

RY-COMP.

FUSE

 

BK

BK

 

 

 

 

AC250V/T2A

 

 

 

BR

BL

GN/YL

 

 

 

BK

BK

 

 

 

 

LIMIT

 

 

 

 

CN-DISP1

 

 

S/W

 

 

 

 

 

OPTION

PILLAR

1(L) 2(N) TERMINAL

BR

BL

GN/YL

DISPLAY PCB ASM

INDOOR WIRING DIAGRAM

TO OUTDOOR UNIT

3854A90003U

 

4. LS-K1822/1862/1866/2422/2462/2662HL/HM/HN

POWER

 

 

CN-MOTOR

 

 

 

FORCED

 

 

 

 

 

 

MAIN PCB

 

 

 

 

 

 

OPERATION

GN/YL

 

 

 

 

 

ASM

 

AUTO

 

 

 

 

 

 

SSR

 

RESTART

 

 

 

OR

 

 

REMOTE

 

 

 

 

 

 

 

 

MOTOR

 

 

 

 

CONTROL

 

 

 

 

 

 

 

 

 

 

 

 

BK

 

 

 

-TH1

 

 

 

 

 

 

 

 

 

ZNR

THERMISTOR

 

 

 

BR

YL

 

 

 

CN

 

 

 

 

 

 

 

-TAB1

 

 

CN-U/D

STEP

 

 

SH-CAPA.

 

 

MOTOR

 

 

 

 

 

 

 

 

BR

 

 

CN

 

 

CN-L/R

 

 

 

 

 

 

 

CN-TAB2

 

 

STEP

 

 

 

 

 

 

 

MOTOR

 

 

 

 

 

 

 

 

 

 

 

BL

 

 

 

FUSE

 

RD

 

 

 

 

 

 

 

 

H.V.B

A/CL

 

 

 

 

 

4

3

AC250V/T2A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BK

BK

 

 

 

 

 

RY-COMP.

 

 

 

 

 

 

 

 

-4WAY

 

 

 

BK

BK

 

 

 

 

 

RY-4WAY

 

BK

BK

 

 

 

 

 

CN

 

 

 

 

LIMIT

 

 

GN/YL

 

 

 

 

 

 

 

S/W

 

 

 

 

 

RY-FAN

 

OPTION

BR

BL

BK

RD

 

 

CN-DISP1

 

 

 

 

 

 

 

 

 

1(L) 2(N) 3 4 PILLARTERMINAL

BR

BL

GN/YL

BK

RD

DISPLAY PCB ASM

 

 

 

 

 

INDOOR WIRING DIAGRAM

TO OUTDOOR UNIT

3854A90003V

 

- 18 -

(2)Outdoor Unit

1.LS-K1820/1860/1861/1862/2420/2422/2460/2462/2621/2622/2661/2662CL/CM/CN/CN

R

 

C

BR

 

 

S

 

 

COMP.

RD

 

YL

 

 

 

 

H

 

 

CAPACITOR

 

OPTION

 

 

PTC

 

 

 

BR(OR)

 

 

YL

C

F

 

 

BK

TP

 

 

TERMINAL 1(L) 2(N)

BLOCK

BR BL

GN/YL

 

TO INDOOR UNIT OUTDOOR WIRING DIAGRAM

GN/YL

GN/YL

FAN

 

 

MOTOR

3854AR2735F

2. LS-K1820/1822/1865/1866/HL/HM/HN

 

PTC

 

 

FAN

COMP.

 

 

GN/YL

 

 

MOTOR

C S R

 

 

 

 

 

 

 

BR

 

CAPACITOR

 

 

 

 

YL

H

C F

YL

 

RD

 

 

 

 

T / B 1

BK

 

(RD)

BR

BL

GN/YL

1(L) 2(N)

 

BR

BL

GN/YL

BR(OR)

REVERSING

VALVE

BK

T / B 2

BK

RD

3 4 TERMINALBLOCK

BK

RD

TO OUTDOOR UNIT

OUTDOOR WIRING DIAGRAM

3854A90003K

- 19 -

3. LS-K1860/1861/1862/2420/2460/2621/2661HL/HM/HN

 

PTC

 

FAN

COMP.

 

GN/YL

 

MOTOR

C S R

 

 

 

 

 

 

BR

CAPACITOR

 

 

 

YL

YL

H

C F

 

BR

BR(OR)

 

 

RD

T/B 3

BK(RD)

HEATER

 

REVERSING

 

 

 

 

VALVE

RD

RD

T / B 1

 

 

T/B 4

 

BK(RD)

 

 

 

 

 

BK

 

 

GN/YL

 

 

T / B 2

BR

BL

BK

RD

TERMINAL

1(L) 2(N)

 

3

4

 

 

 

 

 

BLOCK

BR

BL

GN/YL

BK

RD

 

TO OUTDOOR UNIT

OUTDOOR WIRING DIAGRAM

3854A90003M

- 20 -

Operation Details

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°C => 18°C

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

- 21 -

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= T1T2).

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

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