Lsk1820cl Mibi Split Lg

download Lsk1820cl Mibi Split Lg

of 71

Transcript of Lsk1820cl Mibi Split Lg

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    1/71

    Room Air ConditionerSVC MANUAL(Exploded View)

    CAUTION

    Before Servicing the unit, read the safety precautions in General SVC manual.

    Only for authorized service personnel.

    Internal Use Only

    http://biz.lgservice.com

    MODEL : LS-K1820CL/CM/HL/HM

      LS-K1822CL/CM/HL

      LS-K1860CL/CM/CN/HL/HM/HN  LS-K1861CL/HL/HM

      LS-K1862CL/HL/HM

      LS-K1865HL/HM/HN

      LS-K1866HL

      LS-K2460CL/CM/CN/HL/HM/HN

      LS-K2462CL/HL

      LS-K2420CL/CM/HL/HM

      LS-K2422CL/CM/HL

    LS-K2621

    LS-K2661CL/HL/HM

    LS-K2662CL/HL/HMLS-K1863DL

    LS-K1865EL

    LS-K1866EL

    LS-K2422AL

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    2/71

    - 2 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    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.......................................................................................................................69

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    3/71

    - 3 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    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)

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    4/71

    - 4 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    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

    (Coolingmodel only)

    (Heatingmodel 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°CUp to 30°C

    Heating Down to 16°CUp to 30°C

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    5/71

    - 5 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    Product Specifications

    Cooling CapacityBTU/h(kcal/h)

    W

    Heating CapacityBTU/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

    TimerSelf 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/OFFYES

    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

    NO(OPTION)

    YES

    YES

    YES

    YES

    24hr ON/OFFYES

    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

    -

    -

    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/OFFYES

    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

    NO

    YES

    YES

    YES

    YES

    24hr ON/OFFYES

    L.C.D Wireless

    1/4"(6.35)

    5/8"(15.88)

    YES

    YES

    1.5, 0.75mm2

    1.5mm2

    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/OFFYES

    L.C.D Wireless

    1/2"(12.7)

    5/8"(15.88)

    YES

    YES

    1.5mm2

    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-

    K1860CL/CM/CN

    LS-

    K1860HL/HM/HN

    LS-

    K1820CL/CM/CN

    LS-

    K1820HL/HM/HN  LS-K1863DL

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    6/71

    - 6 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    Cooling CapacityBTU/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

    HeatingCooling

    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

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    7/71

    - 7 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    Cooling CapacityBTU/h(kcal/h)

    W

    Heating CapacityBTU/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

    TimerSelf 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/OFFYES

    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/OFFYES

    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/OFFYES

    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/OFFYES

    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

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    8/71

    - 8 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    Cooling CapacityBTU/h(kcal/h)

    W

    Heating CapacityBTU/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

    TimerSelf 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/OFFYES

    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/OFFYES

    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/OFFYES

    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/OFFYES

    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

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    9/71

    - 9 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    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

    57820

    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

    8.78.7

    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

    12.211.9

    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

    CoolingHeating

    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

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    10/71

    - 10 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    Cooling CapacityBTU/h(kcal/h)

    W

    Heating CapacityBTU/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

    TimerSelf 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

    1258

    1,580

    YES

    NO

    NO

    YES

    NO

    NO

    YES

    YES

    24hr ON/OFFYES

    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

    1265

    1,610

    YES

    NO

    NO

    YES

    YES

    YES

    YES

    YES

    24hr ON/OFFYES

    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

    1257

    870

    YES

    NO

    NO

    YES

    NO

    NO

    YES

    YES

    24hr ON/OFFYES

    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

    1258

    1,360

    YES

    NO

    NO

    YES

    YES

    YES

    YES

    YES

    24hr ON/OFFYES

    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

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    11/71

    - 11 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    Cooling CapacityBTU/h(kcal/h)

    W

    Heating CapacityBTU/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

    TimerSelf 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/OFFYES

    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/OFFYES

    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/OFFYES

    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/OFFYES

    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

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    12/71

    (1) Indoor Unit

    Dimensions

    - 12 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    Tubing hole cover

    Tubing hole cover

    Installation plate

    DW

    H

    W

    H

    Tubing hole cover

    Tubing hole cover

    Installation plate

    D

    MODEL ALL MODELSDIMENSION

    W mm 1,080

    H mm 314

    D mm 181

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    13/71

    - 13 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    W

    L7 L6 L8 L9

         D   L     1

         L     2

         L     3

         L     1     0

         L     1     1

         L     4

         L     5

         H

    Gas side

    3-way valve

    Liquid side

    2-way valve

    (2) Outdoor Unit

    MODELDIM

    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

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    14/71

    - 14 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    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

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    15/71

    - 15 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    W

    L7 L6 L8 L9

         D   L     1

         L     2

         L     3

         L     1     0

         L     1     1

         L     4

         L     5

         H

    Gas side

    3-way valve

    Liquid side

    2-way valve

    (2) Outdoor Unit

    MODELDIM

    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

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    16/71

    - 16 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    Pipe length and the elevation

    * Capicity is based on standard length and maximum allowance length is the basis ofreliability.

    * Oil trap should be installed per 5~7 meters.

    * Numerical value in "( )" is for Rotary Comp. model.

    CAUTION

    Outdoor unit

    Indoor unit

         A

    B

    AOil trap

    Outdoor unit

    Indoor unitB

    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 SizeCapacity(Btu/h)

    GAS LIQUID

    AdditionalRefrigerant

    (g/m)

    Max.Length

    A (m)

    Max.Elevation

    B (m)

    StandardLength

    (m)

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    17/71

    - 17 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    Wiring Diagram

    (1) Indoor Unit1. 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

    FUSEAC250V/T2A

         C     N   -     T     H     1

    SSR

    SH-CAPA.

    BR

          G      N      /      Y      L

         B     R

         Y     L

    OR

    BK

          C      N   -      T      A      B      1

          C      N   -      T      A      B      2

    RY-COMP.

    ZNR

         C     N   -     M     O     T     O     R

    THERMISTOR

    FORCEDOPERATION

    AUTORESTART

    REMOTECONTROL

    MOTOR

    MAIN PCBASM

    DISPLAY PCB ASM

    POWER

    TO OUTDOOR UNIT

    PILLARTERMINAL

         B     R

         B     L

         G     N     /     Y     L

         B     R

         B     L

           G       N       /       Y       L

    1(L)  2(N) 

    34

    BL

         C     N   -     U     /     D

    STEPMOTOR

         C     N   -     L     /     R

    STEPMOTOR

    WH

    IONH.V.BGN

    (GN/YL)

    OPTION

    3854A90003J

    INDOOR WIRING DIAGRAM

    CN-DISP1

         C     N   -     U     /     D

    FUSEAC250V/T2A

         C     N   -     T     H     1

    SSR

    SH-CAPA.

    BR

          G      N      /      Y      L

    BL

         B     R

         Y     L

    OR

    BK

           C       N   -       T       A       B       1

           C       N   -       T       A       B       2

          C      N   -      4      W      A      Y

    RY-COMP.

    ZNR

    RY-4WAY

    RY-FAN

         C     N   -     M     O     T     O     R

    THERMISTOR

    FORCEDOPERATION

    AUTORESTART

    REMOTECONTROL

    STEPMOTOR

         C     N   -     L     /     R

    STEPMOTOR

    MOTOR

    MAIN PCBASM

    DISPLAY PCB ASM

    POWER

    TO OUTDOOR UNIT

    PILLARTERMINAL

         B     R

         B     L

         R     D

         B     K

         G     N     /     Y     L

         B     R

         B     L

         R     D

         B     K

           G       N       /       Y       L

    1(L)  2(N)  3 4

    4  3WH

    IONH.V.B

    GN(GN/YL)

    OPTION

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    18/71

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    19/71

    - 19 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    R

    S

    C FH

    C

    COMP.

    TO INDOOR UNIT

    OUTDOOR WIRING DIAGRAM

    MOTORFAN

    B   R   

    OPTION

    PTC

    CAPACITOR

    YL

    TP

    RD

    TERMINALBLOCK

    3854AR2735F

    BR(OR)

    BR BL

    BK

    YL

         G     N     /     Y     L

         G     N     /     Y     L

         G     N     /     Y     L1(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

    TERMINALBLOCK

    CAPACITOR

    PTC

         B     R      B     L      R     D     B     K     G     N

         /     Y     L

    GN/YL

         B     R

         B     L

         R     D

         B     K

           G       N       /       Y       L

    1(L)  2(N)  3 4

    COMP.FAN

    MOTOR

    BR

    H C F

    RSC

    RD

    T / B 1BR(OR)BK

    (RD)

    YL

    BK

    YL

    T / B 2

    REVERSINGVALVE

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    20/71

    - 20 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

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

    3854A90003M

    OUTDOOR WIRING DIAGRAM

    TO OUTDOOR UNIT

    TERMINALBLOCK

    CAPACITOR

    PTC

         B     R

         B     L

         R     D

         B     K

         G     N     /     Y     L

    GN/YL

         B     R

         B     L

         R     D

         B     K

           G       N       /       Y       L

    1(L)  2(N)  3 4

    COMP.FAN

    MOTOR

    BR

    H C F

    RSC

    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

    REVERSINGVALVE

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    21/71

    - 21 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    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.

    Operation Details

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    22/71

    • While the intake air temp is between compressor on temp. and compressor off temp., 10-min dehumidificationoperation 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 thesetting 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 , itoperates 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 out-

    door 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 12min.

    • 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 modeoperation 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 indoorpipe temperatures of 25 min later (TE1) and 60 min later (TE2) after heating mode operation start-ed.

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

    - 22 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    23/71

    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 carry-ing 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 presenttemp of the indoor pipe to get the difference of the indoor pipe temperatures (=the present temperature of theindoor pipe ? the minimum temperature of the indoor pipe). When the difference is 5°C or higher, defrost con-

    trol 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, defrostcontrol 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 settingtemp, 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 theintake air temp at that time.

    26°C ≤ Intake Air Temp => 25°C

    24°C ≤ Intake Air Temp Intake Air Temp+1°C

    22°C ≤ Intake Air Temp Intake Air Temp+0.5°C

    18°C ≤ Intake Air Temp Intake Air Temp

    Intake Air Temp 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 temperatureautomatically according to the Fuzzy rule.

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

    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 onlythe indoor fan is operated for 15 seconds. Then an operation mode is selected according to the intake air tempat that moment as follows.

    24°C ≤ Inatake Air Temp => Fuzzy Operation for Cooling

    21°C ≤ Inatake Air Temp Fuzzy Operation for Dehumidification

    Inatake Air Temp Fuzzy Operation for Heating

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

    - 23 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    24/71

    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 belowthe 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 Intake Air Temp+1°C

    22°C ≤ Intake Air Temp Intake Air Temp+0.5°C

    18°C ≤ Intake Air Temp 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 temperatureautomatically 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 isturned 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 Intake Air Temp+1°C

    22°C ≤ Intake Air Temp Intake Air Temp+0.5°C

    18°C ≤ Intake Air Temp 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, theFuzzy key value and the intake air temperature at that time are compared to select the setting temperatureautomatically 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 dehu-midification 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 thesetting 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 theintake air temp at that time.20°C ≤ Intake Air Temp => Intake Air Temp + 0.5°C

    Intake Air Temp < 20°C => 20°C

    - 24 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    25/71

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    26/71

    Chaos Swing Mode

    • By the Chaos Swing key input, the upper/lower vane automatically operates with the Chaos Swing or they are

    fixed to the desired direction.

    • While in Chaos Swing mode, the angles of cooling and heating cycle operations are different.

    Chaos Natural Wind Mode

    • When the Chaos Natural Wind mode is selected and then operated, the high, medium, or low speed of the air-

    flow mode is operated for 2~15 sec randomly by the Chaos Simulation.”

     Jet Cool Mode Operation (C/O Model)

    • If the Jet Cool key is input at any operation mode while in appliance operation, the Jet Cool mode operates.

    • In the Jet Cool mode, the indoor fan is operated at super-high speed for 30 min at cooling mode operation.

    • In the Jet Cool mode operation, the room temperature is controlled to the setting temperature, 18°C

    • When the sleep timer mode is input while in the Jet Cool mode operation, the Jet Cool mode has the priority.• When the Jet Cool key is input, the upper/lower vanes are reset to those of the initial cooling mode and then

    operated in order that the air outflow could reach further.

    Jet Cool Mode Operation (H/P Model)

    • While in heating mode or Fuzzy operation, the Jet Cool key cannot be input. When it is input while in the other

    mode operation (cooling, dehumidification, ventilation), the Jet Cool mode is operated.”

    • In the Jet Cool mode, the indoor fan is operated at super-high speed for 30 min at cooling mode operation.

    • In the Jet Cool mode operation, the room temperature is controlled to the setting temperature, 18°C

    • When the sleep timer mode is input while in the Jet Cool mode operation, the Jet Cool mode has the priority.

    • When the Jet Cool key is input, the upper/lower vanes are reset to those of the initial cooling mode and thenoperated in order that the air outflow could reach further.

    Auto Restarting Operation

    • When the power is restored after a sudden power failure while in appliance operation, the mode before the

    power failure is kept on the memory and the appliance automatically operates in the mode on the memory.

    • The slide switch on the main unit of the appliance should be on the Auto Restarting position in order that the

    Auto Restarting operation is available.

    • Operation Mode that is kept on the memory

    - State of Operation ON/OFF

    - Operation Mode/Setting Temp/Selected Airflow Speed

    - Sleep Timer Mode/Remaining Time of Sleep Timer (unit of hour)

    • If no input by the remote controller or no switching of the slide switch within 7 hr after the appliance operates by

    the Auto Restarting operation, the appliance is forced to stop at the moment of 7-hr elapse.

    - 26 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    27/71

    Forced Operation ( C/O Model)

    • To operate the appliance by force in case that the remote controller is lost, the forced operation selection switchis on the main unit of the appliance to operate the appliance in the standard conditions.

    • When the power is supplied while the slide switch is on the forced operation position, or when the slide switchposition is switched to the Auto Restarting position (or test operation) or switched from the remote control posi-tion to the forced operation position while the power is on, the forced operation is carried out.

    • When the slide switch position is switched from the forced operation position to the Auto Restarting position or

    the remote control position, the forced operation is canceled and the appliance stops operating.

    • The forced operation is carried out in cooling mode with the setting temperature 22°C and the high speed of air-flow.

    • While in forced operation, the key input by the remote controller has no effect and the buzzer sounds 10 times

    to indicate the forced operation.

    Forced Operation ( H/P Model)

    • To operate the appliance by force in case that the remote controller is lost, the forced operation selection switchis on the main unit of the appliance to operate the appliance in the standard conditions.

    • When the power is supplied while the slide switch is on the forced operation position, or when the slide switchposition is switched to the Auto Restarting (or test operation) position or switched from the remote control posi-

    tion to the forced operation position while the power is on, the forced operation is carried out.

    • When the slide switch position is switched from the forced operation position to the Auto Restarting position orthe remote control position, the forced operation is canceled and the appliance stops operating.

    • The forced operation is carried out in cooling mode with the setting temperature 22°C and the high speed of air-flow.

    • In the forced operation mode, the indoor fan is operated at low speed for around 15 sec and then the operationcondition is set according to the intake air temperature as follows.

    24°C ≤ Intake Air Temp => Cooling Mode Operation, 22°C, High Speed

    21°C ≤ Intake Air Temp < 24°C => Dehumidification Operation, 23°C, High Speed

    Intake Air Temp < 21°C => Heating Mode Operation, 24°C, High Speed

    • While in forced operation, the key input by the remote controller has no effect and the buzzer sounds 10 timesto indicate the forced operation.

    Test Operation Control

    • To check the condition of the installation when installing the appliance, the appliance is operated at cooling

    mode, high speed of airflow, compressor-on for 18 min without controlling the room temperature.

    • Only when the slide switch on the main unit is switched from the remote control position to the test operationposition, test operation is carried out.

    • When the slide switch position is switched to the remote control position while in test operation, the test opera-tion is canceled and the appliance is stopped. When switched to the forced operation position, the test opera-tion is canceled and the forced operation is carried out.

    • While in test operation, a key can be input by the remote controller.When a key (operation start/stop, operation mode selection, airflow speed selection, temperature control, Jet

    Cool) is input by the remote controller, the test operation is canceled and the appliance is operated according tothe setting by the remote controller.

    - 27 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    28/71

    Remote Control Operation Mode

    • When the remote control is selected by the slide switch on the main unit, the appliance operates according tothe input by the remote controller.

    Protection of the evaporator pipe from frosting

    • If the indoor pipe temp is below 0°C in 7 min after the compressor operates without any pause while in cooling

    cycle operation mode, the compressor and the outdoor fan are turned off in order to protect the indoor evapora-tor pipe from frosting.

    • When the indoor pipe temp is 7°C or higher after 3 min pause of the compressor, the compressor and the out-

    door fan is turned on according to the condition of the room temperature.

    Buzzer Sounding Operation

    • When the appliance-operation key is input by the remote controller, the short “beep-beep-” sounds.

    • When the appliance-pause key is input by the remote controller, the long “beep—” sounds.

    • When a key is input by the remote controller while the slide switch on the main unit of the appliance is on theforced operation position, the error sound “beep-beep-beep-beep-beep-” is made 10 times to indicate that theremote control signal cannot be received.

    Self Diagnosis Operation

    Thermistor Error Indicator

    • When the indoor pipe sensor or the room temperature sensor is open or is shorted, the error is indicated.

    • To indicate the error, the operation LED (or the cooling LED) flashed at 3 sec interval.

    • When the error is cleared, the LED stops flashing, the operation (or cooling) LED is on.

    • While in appliance pause, the error is not indicated.

    • Since the airflow quantity and speed are controlled by the adjustment of the vane angle using the Wind-upeffect, you can enjoy the natural and pleasant wind uniformly at any location in the room.

    • Since the indoor outflow air is sucked again by the upper/lower vanes, the indoor temperature drop is mini-

    mized and the pleasant humidity is maintained.

    Air Cleaner Operation

    • When an air cleaner function is selected during Air Conditioner operation- Plasma air cleaner function will be operated while in any operation mode with selecting the function.- The function is to be stopped while it is operating with selecting the function.

    • When an air cleaner function is selected during operation off

    - The function will be only operated.• When inlet grille of air conditioner is opened during plasma operation, High Voltage Generator(H.V.B) is to be

    stopped. When inlet grille of air conditioner is closed during plasma operation, High Voltage Generator(H.V.B)

    will be operated again.

    - 28 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    29/71

    - 29 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    Display Function

    1. Heating Model 2. Cooling Model

    •  Cooling, Soft Dry, Fan, Heating •  Cooling, Soft Dry, Fan

    •  Sleep Mode •  Sleep Mode

    •  Timer Mode •  Timer Mode

    • Hot-start, Deice

    Self-diagnosis Function

    Thermistor Cut Off or Short

    Cut Off/Short : Blinks on and off the operation mode LED. (0.5 sec ON/3 sec OFF)

    Protection of the evaporator pipe from frosting

    If the temperature of the indoor pipe is below 0°C after 7 minutes from starting the compressor, the compressor

    and outdoor fan is stopped, and then after 3 minutes delay of operating of the compressor, when the tempera-

    ture of the indoor pipe is over 7°C, the compressor and the outdoor fan is reoperated.

    Operation Indicator

    Timer Indicator

    Sleep Timer Indicator

    Deicer Indicator

    Operation Indicator

    Timer Indicator

    Sleep Timer Indicator

    Compressor on Indicator

    OUT

    DOOR

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    30/71

    - 30 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    InstallationRead completely, then follow step by step.

    1. Installation of Indoor, Outdoor unit

    1) Select the best location

    1. Indoor unit

    Do not have any heat or steam near the unit.

    Select a place where there are no obstacles infront of the unit.Make sure that condensation drainage can be

    conveniently routed away.Do not install near a doorway.Ensure that the space around the left and right of

    the unit is more than 5cm. The unit should beinstalled as high on the wall as possible, allowinga minimum of 5cm from ceiling.

    Use a stud finder to locate studs to prevent

    unnecessary damage to the wall.

    2. Outdoor unitIf an awning is built over the unit to prevent directsunlight or rain exposure, make sure that heat

    radiation from the condenser is not restricted.Ensure that the space around the back and sidesis more than 10cm. The front of the unit should

    have more than 70cm of space.Do not place animals and plants in the path ofthe warm air.

    Take the air conditioner weight into account andselect a place where noise and vibration are min-imum.

    Select a place so that the warm air and noisefrom the air conditioner do not disturb neighbors.

    Rooftop Installations:

    If the outdoor unit is installed on a roof structure,be sure to level the unit. Ensure the roof structure

    and anchoring method are adequate for the unitlocation. Consult local codes regarding rooftopmounting.

    2) Piping length and elevation

    More than 5cmMore than 5cm

    More than 2.3m More than 5cm

    More than 10cm More than 10cm

    More

    than 60cm

    More than 60cm

    More than 70cm

    In case more than 5m

    • Capacity is based on standard length and maximumallowance length is on the basis of reliability.

    • Oil trap should be installed every 5~7 meters.

    Outdoor unit

    Indoor unit

         A

    B

    AOil trap

    Outdoor unit

    Indoor unitB

    CAUTION 

    Install the indoor unit on the wall where the heightfrom the floors more than 2.3 meters.

    CAUTION 

    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 SizeCapacity(Btu/h) GAS LIQUID

    Max.lengthA (m)

    AdditionalRefrigerant

    (g/m)

    Max.Elevation

    B (m)

    StandardLength

    (m)

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    31/71

    - 31 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    3) How to fix installation plateThe wall you select should be strong and solid enough to preventvibration

    1. Mount the installation plate on the wall with fourtype A screws. If mounting the unit on a concretewall, use anchor bolts.

    Mount the installation plate horizontally by align-

    ing the centerline using a level.

    2. Measure the wall and mark the centerline. It is also

    important to use caution concerning the locationof the installation plate-routing of the wiring topower outlets is through the walls typically.

    Drilling the hole through the wall for piping con-nections must be done safely.

         5   -     7

        m    m

         (     0 .     2   ~     0 .     3

         "     )

    Indoor

    WALL

    Outdoor

    Installation Plate

    Marking-off line

    Thread

    Weight

    Type "A" screw

    "D" "C"

    Right rear pipingLeft rear piping

    Hole center ø70mm

    4) Drill a hole in the wall

    Drill the piping hole with a ø70mm hole core drill.

    Drill the piping hole at either the right or the left

    with the hole slightly slanted to the outdoor side.

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    32/71

    - 32 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    1) Flaring work 

    Main cause for gas leakage is due to defect in flar-ing work. Carry out correct flaring work in the follow-ing procedure.

    1. Cut the pipes and the cable.

    Use the piping kit accessory or the pipes pur-chased locally.Measure the distance between the indoor andthe outdoor unit.Cut the pipes a little longer than measured dis-tance.Cut the cable 1.5m longer than the pipe length.

    2. Burrs removal

    Completely remove all burrs from the cut crosssection of pipe/tube.Put the end of the copper tube/pipe in a down-ward direction as you remove burrs in order toavoid dropping burrs into the tubing.

    3. Putting nut on

    Remove flare nuts attached to indoor and out-

    door unit, then put them on pipe/tube havingcompleted burr removal.(not possible to put them on after flaring work)

    Copperpipe 90° Slanted Uneven Rough

    Bar

    Copper pipe

    Clamp handleRed arrow mark

    Cone

    Yoke

    Handle

    Bar     "     A     "

    Pipe

    Reamer

    Point down

    4. Flaring work 

    Carry out flaring work using flaring tool as shownbelow.

    Firmly hold copper pipe in a die in the dimension

    shown in the table above.

    5. Check 

    Compare the flared work with figure below.If flare is noted to be defective, cut off the flaredsection and do flaring work again.

    Outside diameter A

    mm inch mm

    ø6.35 1/4 0 ~ 0.5

    ø9.52 3/8 0 ~ 0.5

    ø12.7 1/2 0 ~ 0.5

    ø15.88 5/8 0 ~ 1.0

    Flare nut

    Copper tube Inclined

    Inside is shiny without scratches

    Smooth all round

    Even lengthall round

    Surfacedamaged

    Cracked Uneventhickness

    = Improper flaring =

    2. Flaring Work and Connection of Piping

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    33/71

    - 33 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    2) Connection of piping-Indoor

    Preparing the indoor unit's piping and drain hose

    for installation through the wall.

    Remove the plastic tubing retainer(see illustra-tion below) and pull the tubing and drain hoseaway from chassis.

    Replace the plastic tubing holder in the original

    position.

    1. Route the indoor tubing and the drain hose in thedirection of rear left.

    2. Insert the connecting cable into the indoor unit

    from the outdoor unit through the piping hole.

    Do not connect the cable to the indoor unit.

    Make a small loop with the cable for easy con-

    nection later.

    4. Indoor unit installation

    Hook the indoor unit onto the upper portion of

    the installation plate.(Engage the two hooks ofthe rear top of the indoor unit with the upper

    edge of the installation plate.) Ensure that thehooks are properly seated on the installationplate by moving it left and right.

    Press the lower left and right sides of the unit against the installation plate until the hooks engage into their slots(clicking sound).

    3. Tape the tubing, drain hose and the connecting

    cable. Be sure that the drain hose is located at thelowest side of the bundle. Locating at the upperside can cause drain pan to overflow inside theunit.

    5. Connecting the pipings to the indoor unit anddrain hose to drain pipe.

    Align the center of the pipings and sufficiently

    tighten the flare nut by hand.

    NOTE: If the drain hose is routed inside the room, insulate thehose with an insulation material* so that dripping from"sweating"(condensation) will not damage furniture orfloors.*Foamed polyethylene or equivalent is recommended.

    To remove the holder,press the bottom ofchassis near the holderupward and pull the tabout of its hole.

    Tubing holder

    Pull

    Press

    2

    1

    Connectingcable

    Loop

    Gas sidepiping

    Liquid sidepipingDrain hose

    Drain hose

    Connectingcable

    Drain hose

    Indoor unit tubing Flare nut Pipings

    For left rear piping 

    CAUTION

    When install, make sure that

    the remaining parts must beremoved clearly so as not todamage the piping and drain

    hose, especially power cordand connecting cable.

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    34/71

    - 34 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    6. Wrap the insulation material around the connect-ing portion.

    Overlap the connection pipe insulation materialand the indoor unit pipe insulation material.Bind them together with vinyl tape so that thereis no gap.

    1. Route the indoor tubing and the drain hose to therequired piping hole position.

    2. Insert the piping, drain hose and the connecting

    cable into the piping hole.

    Plastic bandsInsulation material

    Drain pipe

    Connecting cable

    Vinyl tape(narrow)

    Connectionpipe

    Connecting cable

    Vinyl tape(wide)

    Wrap with vinyl tape

    Indoorunit pipe

    Pipe

    Torque wrench

    Indoor unit tubing

    Spanner (fixed)

    Connection

    Flare nut

    Vinyl tape(narrow)Adhesive

    Drain pipe

    Indoor unit drain hose

    When extending the drain hose at the indoor

    unit, install the drain pipe.

    Tighten the flare nut with a wrench.

    18K, 24K, 26K1/2"[5.5kg.m] 1/4"[1.8kg.m]

    5/8"[6.6kg.m] 3/8"[4.2kg.m]

    Pipe Size[Torque]Capacity

    (Btu/h) GAS LIQUID

    Wrap the area which accommodates the rearpiping housing section with vinyl tape.

    Bundle the piping and drain hose together bywrapping them with vinyl tape over the range

    within which they fit into the rear piping housingsection.

    For right rear piping

    Wrap with vinyl tape

    Drain hose

    Pipe

    Vinyl tape(wide)

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    35/71

    - 35 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    3. Insert the connecting cable into the indoor unit.

    Don't connect the cable to the indoor unit.

    Make a small loop with the cable for easy con-

    nection later.

    4. Tape the drain hose and the connecting cable.

    Connecting cable

    5. Indoor unit installation

    Hang the indoor unit from the hooks at the top ofthe installation plate.

    Insert the spacer etc. between the indoor unitand the installation plate and separate the bot-

    tom of the indoor unit from the wall.

    Installation plate

    Spacer

    Indoor unit

    8cm

    6. Connecting the pipings to the indoor unit and the

    drain hose to drain pipe.

    Align the center of the pipings and sufficiently

    tighten the flare nut by hand.

    Tighten the flare nut with a wrench.

    7. Wrap the insulation material around the connect-

    ing portion.

    Overlap the connection pipe heat insulation and

    the indoor unit pipe heat insulation material. Bindthem together with vinyl tape so that there is nogap.

    Plastic bandsInsulation material

    Vinyl tape(narrow)

    Connectionpipe

    Connecting cable

    Indoorunit piping

    Pipe

    Vinyl tape

    (wide)

    Wrap with vinyl tapeIndoor unit tubing Flare nut Pipings

    Torque wrench

    Indoor unit tubing

    Spanner (fixed)

    Connection pipe

    Flare nut

    Vinyl tapeAdhesive

    Drain hose

    Indoor unit drain hose

    (narrow)

    When extending the drain hose at the indoor

    unit, install the drain pipe.

    Wrap the area which accommodates the rear piping housing

    section with vinyl tape.

    18K, 24K, 26K

    1/2"[5.5kg.m] 1/4"[1.8kg.m]

    5/8"[6.6kg.m] 3/8"[4.2kg.m]

    Pipe Size[Torque]Capacity

    (Btu/h) GAS LIQUID

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    36/71

    - 36 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    3) Connection of the pipes-Outdoor

    1. Align the center of the pipings and sufficientlytighten the flare nut by hand.

    2. Finally, tighten the flare nut with torque wrenchuntil the wrench clicks.

    When tightening the flare nut with torque wrench,

    ensure the direction for tightening follows thearrow on the wrench.

    Outdoor unit

    Liquid side piping(Smaller diameter)

    Gas sidepiping(Biggerdiameter)

    Torque wrench

    Outdoor unit

    Gas side piping(Bigger diameter)

    Liquid sidepiping(Smallerdiameter)

    Torque wrench

    8. Reroute the pipings and the drain hose across the

    back of the chassis.

    9. Set the pipings and the drain hose to the back ofthe chassis with the tubing holder.

    Hook the edge of tubing holder to tap on chassisand push the bottom of tubing holder to beengaged at the bottom of chassis.

    10. Indoor unit installation

    Remove the spacer.

    Ensure that the hooks are properly seated on the

    installation plate by moving it left and right.

    Drain hose

    Connectingcable

    Piping forpassage throughpiping hole

    Tubing holder

    Hook1

    Push2

    Drain hoseVinyl tape(narrow)

    Pipe

    Wrap withvinyl tape(wide)

    Bundle the piping and drain hose together by

    wrapping them with cloth tape over the rangewithin which they fit into the rear piping housingsection.

    Press the lower left and right sides of the unit against the installation plate until the hooks engage into their slots(clicking sound).

    18K, 24K, 26K1/2"[5.5kg.m] 1/4"[1.8kg.m]

    5/8"[6.6kg.m] 3/8"[4.2kg.m]

    Pipe Size[Torque]Capacity(Btu/h) GAS LIQUID

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    37/71

    - 37 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    1) Connect the cable to the Indoor unit.

    Connect the cable to the indoor unit by connect-

    ing the wires to the terminals on the controlboard individually according to the outdoor unitconnection.(Ensure that the color of the wires of the outdoor

    unit and the terminal No. are the same as thoseof the indoor unit.)

    CAUTION The power cord connected to the indoor unit shouldbe complied with the following specifications(Type H05VV-F approved by HAR or SAA).

    1(L)

    Terminals on the outdoor unit

    Terminals on the indoor unit

    1(L) 2(N)

    2(N)

    BROWN BLUE GREEN/YELLO

    BROWN BLUE GREEN/YELLO

    Terminals on the outdoor unit

    Terminals on the indoor unit 1(L)

    1(L)

    2(N)

    2(N)

    3 4

    3 4

    BROWN BLUE G/Y BLACK RED

    BROWN BLUE G/Y RED

    BROWN BLUE BLACK

    BLACK

    G/Y RED

    REDG/YBLUEBROWN

    The power connecting cable connected to the indoorand outdoor unit should be complied with the followingspecifications(Type H07RN-F approved by HAR or SAA).

    The connecting cable connected to the indoor andoutdoor unit should be complied with the followingspecifications

    (Type H07RN-F approved by HAR or SAA).

    • Cooling model 

    • Heat pump model 

    Color of Wires

    Color of Wires

    Color of Wires

    Color of Wires

    The length of the power supply cord should be over 1.8mmeasured from the power supply cord entry of the cabinetto the middle of the live pin of the plug.

    Air

    Conditioner

    Main power source

    If a power plug is not to be used, provide a circuit breaker between power source andthe unit as shown below.

    Circuit BreakerUse a circuit break-er or time delayfuse.

    CAUTION 

    Capacity

    (Btu/h)

    NORMAL CROSS

    -SECTIONAL AREA

    18K

    24K26K

    1.5mm2

    2.5mm2

    Capacity

    (Btu/h)

    NORMAL CROSS

    -SECTIONAL AREA

    18K

    24K26K

    1.5mm2

    2.5mm2

    3. Connecting the Cable Between Indoor Unit and Outdoor Unit

    NORMALCROSS-SECTIONALAREA 0.75mm2 

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    38/71

    - 38 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    2) Connect the cable to the outdoor unit

    1. Remove the control cover from the unit byloosening the screw.

    Connect the wires to the terminals on thecontrol board individually.

    2. Secure the cable onto the control board with

    the cord clamp.

    3. Refix the control cover to the original positionwith the screw.

    4. Use a recognized circuit breaker 20A (18K),

    25A (24K, 26K) between the power source and

    the unit. A disconnecting device to adequate-ly disconnect all supply lines must be fitted.

    Terminal block

    Over 5mm

    Cover control

    Connecting cable

    Connecting cable

    After the confirmation of the above conditions, prepare the wiring as follows:

    1) Never fail to have an individual power circuit specifically for the air conditioner. As for the method ofwiring, be guided by the circuit diagram posted on the inside of control cover.

    2) The screw which fasten the wiring in the casing of electrical fittings are liable to come loose from vibra-tions to which the unit is subjected during the course of transportation. Check them and make sure that

    they are all tightly fastened. (If they are loose, it could cause burn-out of the wires.)

    3) Specification of power source.

    4) Confirm that electrical capacity is sufficient.

    5) See to that the starting voltage is maintained at more than 90 percent of the rated voltage marked on thename plate.

    6) Confirm that the cable thickness is as specified in the power source specification.(Particularly note the relation between cable length and thickness.

    7) Always install an earth leakage circuit breaker in a wet or moist area.

    8) The following would be caused by voltage drop.

    • Vibration of a magnetic switch, which will damage the contact point, fuse breaking, disturbance of the nor-mal function of the overload.

    9) The means for disconnection from a power supply shall be incorporated in the fixed wiring and have anair gap contact separation of at least 3mm in each active(phase) conductors.

    Outdoor Unit

    CAUTION 

    loaded from www.Manualslib.com manuals search engine 

    http://www.manualslib.com/http://www.manualslib.com/

  • 8/17/2019 Lsk1820cl Mibi Split Lg

    39/71

    - 39 - Copyright ©2007 LG Electronics. Inc. All right reserved.Only for training and service purposes

    LGE Internal Use Only

    2) Form the piping1. Form the piping by wrapping the connecting por-

    tion of the indoor unit with insulation material and

    secure it with two kinds of vinyl tapes.

    If you want to connect an additional drain hose,

    the end of the drain outlet should be routedabove the ground. Secure the drain hose appro-priately.

    2. In cases where the outdoor unit is installed below

    the indoor unit perform the following.

    Tape the piping, drain

    hose and connectingcable from down to up.

    Secure the tappedpiping along theexterior wall using

    saddle or equivalent.

    Taping

    Drainhose

    Pipings

    Connectingcable

    Trap is required to prevent waterfrom entering into electrical parts.

    Seal small openings

    around pipings with agum type sealer.

    3. In cases where the Outdoor unit is installed above

    the Indoor unit perform the following.

    Tape the piping and connecting cable from down

    to up.

    Secure the taped piping along the exterior wall.

    Form a trap to prevent water entering the room.

    Fix the piping onto the wall by saddle or equiva-

    lent.

    Seal a small openi