LG LS-T1862AG Manual
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LG LS-T1862AG Manual

LG LS-T1862AG Manual

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Room Air Conditioner

SVC MANUAL(Exploded View)
MODEL : LS-T1862AG
LS-T186AAG/AAL/ADL/AAM
LS-T186ACG/ACL/ADG
LS-T186CAG/BAG/BDG/CDL
LS-T246AAG/AAL/ACL/ACG/AAM
LS-T246CAG/BAG/ADG/ADL/LDL
LS-T266CAG/FAG/AAL/CDL
LS-T1865AG/LS-T212CAG
LS-T1860AL
LS-C186TGD0/TLB0/TGM0/TLA0
LS-C266TGD0/TLB0/TGM0/TLA0/TGF0
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

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Summary of Contents for LG LS-T1862AG

  • Page 1: Room Air Conditioner

    Internal Use Only http://biz.lgservice.com Room Air Conditioner SVC MANUAL(Exploded View) MODEL : LS-T1862AG LS-T186AAG/AAL/ADL/AAM LS-T186ACG/ACL/ADG LS-T186CAG/BAG/BDG/CDL LS-T246AAG/AAL/ACL/ACG/AAM LS-T246CAG/BAG/ADG/ADL/LDL LS-T266CAG/FAG/AAL/CDL LS-T1865AG/LS-T212CAG LS-T1860AL LS-C186TGD0/TLB0/TGM0/TLA0 LS-C266TGD0/TLB0/TGM0/TLA0/TGF0 CAUTION Before Servicing the unit, read the safety precautions in General SVC manual. Only for authorized service personnel.

  • Page 2: Table Of Contents

    Cycle Troubleshooting Guide....................44 Electronic Parts Troubleshooting Guide................45 Electronic Control Device....................52 Schematic Diagram ......................56 Exploded View ........................58 - 2 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 3: Details Of Lg Model Name(2002)

    GOLD FIN LG/OEM Brand L: LG Brand M: 1st OEM Brand G: 2nd LG Brand N: 2nd OEM Brand - 3 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 4: Details Of Lg Model Name(2003~)

    Nano Plasma F+4Way+(A/changeove)+A/clean+ Serial No. LG Model De velopment Serial No. * ARTCOOL COLOR Mirror White Blue Wood Metal Cherry - 4 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 5: Functions

    • The louver can be set at the desired position or swing evaporator pipe temperature will be reached up and down automatically. at 28°C. - 5 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 6: Remote Control

    Airflow Direction Control Fan Operation Mode : Fan Operates without cooling or heating. Horizontal Airflow Direction Control Button(Optional) Reset - 6 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 7 Airflow Direction Control Air Circulation : Fan Operates without cooling or heating. Horizontal Airflow Direction Control Button(Optional) 2nd F Reset - 7 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 8: Product References

    1.5mm NOTE: Please refer to Label Quality on the product since this specification may be changed for improving performance - 8 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 9: Dimensions

    Dimensions (1) Indoor Unit Installation plate MODEL ALL MODELS Unit 1090 - 9 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 10 (2) Outdoor Unit Gas side Liquid side MODEL ALL MODELS 74.5 - 10 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 11: Refrigeration Cycle Diagram

    HEAT HEAT EXCHANGE EXCHANGE (EVAPORATOR) (CONDENSER) GAS SIDE REVERSING VALVE ACCUMU VALVE LATOR (Heating Model Only) COOLING COMPRESSOR HEATING - 11 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 12: Wiring Diagram

    TERMINAL 1(L) 2(N) BLOCK MOTOR BR BL HIGH PRESSURE SOLENOIDE SWITCH VALVE TO INDOOR UNIT OUTDOOR WIRING DIAGRAM 3854A20167T - 12 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 13: Operation Details

    ➲ Intake Air Temp-1°C 18°C ≤ Intake Intake Air Temp<24°C ➲ Intake Air Temp-0.5°C ➲ 18°C Intake Air Temp<18°C - 13 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 14: Defrost Control

    • While in defrost control, the compressor is on and the indoor fan, the outdoor fan, and the 4 way valve are off. - 14 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 15 • While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the tem- perature. - 15 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 16 • The timer LED is on when the on-timer is input. It is off when the time set by the timer is reached. • If the appliance is operating at the time set by the timer, the operation continues. - 16 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 17: Sleep Timer Operation

    • 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. - 17 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 18: Forced Operation

    When inlet grille of air conditioner is closed during plasma operation, High Voltage Generator(H.V.B) will be operated again. - 18 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 19 "beep-beep-beep-beep-beep-" is made 10 times to indicate that the remote control signal cannot be received. - 19 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 20: Display Function

    • Indoor room temperature thermistor open/short (once) • Indoor Thermistor • Indoor pipe temperature assembly check thermistor open/short. 3sec 3sec 3sec - 20 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 21: Installation

    • Take the air conditioner weight into account and select • Oil trap should be installed every 5~7 meters. a place where noise and vibration are minimum. - 21 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 22 CHASSIS (Grade) SL, SK Installation plate Installation plate Ø70mm Right rear piping Left rear piping Distance (mm) CHASSIS (Grade) - 22 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 23: Flaring Work And Connection Of Piping

    Even length all round burr removal. (not possible to put them on after flaring work) Flare nut Copper tube - 23 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 24 • Do not connect the cable to the indoor unit. • Make a small loop with the cable for easy Indoor unit tubing Flare nut Pipes connection later. - 24 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 25 Plastic bands Insulation material 2. Insert the piping, drain hose, and the connecting cable into the piping hole. Connecting cable Drain pipe - 25 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 26 • Tighten the flare nut with a wrench. Pipe Open-end wrench (fixed) Vinyl tape(narrow) Connecting cable Flare nut Connection pipe Wrench Indoor unit tubing - 26 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 27 • Ensure that the hooks are properly seated on the installation plate by moving it left and right. Torque wrench Torque wrench Connecting cable Drain hose - 27 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 28: Connecting The Cable Between Indoor Unit And Outdoor Unit

    Cable Type(B) H07RN-F H07RN-F H07RN-F Grade NORMAL CROSS 30k, 32k 36k, 38k -SECTIONAL AREA 0.75 0.75 Cable Type(B) H07RN-F H07RN-F - 28 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 29 9) The means for disconnection from a power supply shall be incorporated in the fixed wiring and have an air gap contact separation of at least 3mm in each active(phase) conductors. - 29 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 30: Checking The Drainage And Forming The Pipings

    Tip of drain hose Less than dipped in water 50mm gap Trap Water Water Water Waving leakage leakage leakage Ditch - 30 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 31: Test Running

    8°C(46°F) (Cool- and all refrigerant gas will have been collected in ing) or (Heating). the outdoor unit. - 31 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 32: Operation

    TON (NOT ON ALL MODELS) • Cooling Model( ), Heat Pump Model( Used to set the desired horizontal airflow direction. - 32 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 33 Used prior to using modes printed in blue at the bottom of • Cooling Model( ), Heat Pump Model( buttons. - 33 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 34: Disassembly Of The Parts (Indoor Unit)

    Conductor Sensor Conductor Motor Conductor Step Motor Earth Conductor Conductor Earth Conductor - 34 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 35: Caution Label

    2EA in the Eva Holder, at the right 1EA). Caution label When repair, do not damage the Caution label. - 35 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 36 • Remove the left end of the cross-flow fan from the self-aligning bearing. - 36 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 37: 2-Way, 3-Way Valve

    Open Pressure check (with charging cylinder) Open Open (Servicing) Open Gas releasing (with charging cylinder) Open Open (Servicing) - 37 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 38: Air Purging

    (5) Use torque wrench to tighten the service port from a gas cylinder. nut to a torque of 1.8kg.cm. - 38 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 39: Pumping Down

    – Open the low-pressure valve on the charge set slightly to air purge from the charge hose. (5) Set the 2-way valve to the closed position. - 39 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 40 – Close the valve on the gas cylinder and dis- charge the refrigerant until the gauge indicates 3 to 5 kg/cm - 40 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 41 – Discharge the refrigerant gradually; if it is dis- charged too suddenly, the refrigeration oil will also be discharged. - 41 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 42 (approxima- tely 5 minutes after turning off the vacuum pump). - 42 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 43: Gas Charging

    1 minute and then repeat the procedure (pumping down-pin). - 43 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 44: Cycle Troubleshooting Guide

    2. The temperature can be measured by attaching the thermometer to the low pressure tubing and wrap it with putty. - 44 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 45: Electronic Parts Troubleshooting Guide

    • IC01A(KIA7036, Reset IC) • Voltage of Micom No. 2, • Replace faulty parts X01(8MHz) (DC +4.5V over) and Soldering condition. - 45 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 46 Check point • Check the connecting circuit between CN-DIS1 - R01L(5.1kΩ) - C01L(680pF) - MICOM PIN • Check Receiver Assembly - 46 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 47 • Check the abnormal condition for the component of Compressor/Out- door Fan Motor. • Check the "open" or "short" of conmecting wires between indoor and outdoor. - 47 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 48 The voltage of PIN NO 1(orange) and 3(yellow) of CN-MOTOR. About AC 180V over About AC 50V over TRIAC is not damaged TRIAC Check - 48 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 49 • Confirm the assembly conditions that are catching and interfering parts in the rotation radial of the Vertical Louver - 49 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 50 Between Micom DC 5V DC 0V (NO.51) and GND Between IC02M Below DC 1V About DC 12V (NO.11) and GND - 50 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 51 • Check the abnormal condition for the component of Compressor/Out- door Fan Motor, 4 way. • Check the "open" or "short" of connecting wires between indoor and outdoor. - 51 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 52: Electronic Control Device

    (1) MAIN P.W.B ASSEMBLY (AC PART) • TOP VIEW • BOTTOM VIEW (1) MAIN P.W.B ASM (AC) • COOLING MODEL • HEAT PUMP MODEL - 52 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 53 (2) MAIN P.W.B ASSEMBLY (DC PART) • TOP VIEW • BOTTOM VIEW • TOP VIEW • BOTTOM VIEW - 53 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 54 • BOTTOM VIEW – 6871A30009 • TOP VIEW • BOTTOM VIEW – 6871A20227 • TOP VIEW • BOTTOM VIEW - 54 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 55 – 6871A20391 • TOP VIEW • BOTTOM VIEW – 6871A20476 • TOP VIEW • BOTTOM VIEW - 55 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 56: Schematic Diagram

    Schematic Diagram Cooling Model • LED TYPE - 56 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 57 • HVB TYPE(PLASMA) - 57 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 58: Exploded View

    346810 35211B 135516 TYPE A 263230 352150 146811 145200 264110 Part For Plasma Model 268711C 266090 268711B 263232 W0CZZA - 58 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 59 352115 249951 147581B 352116 268711A 346810 35211B 135516 TYPE A 263230 352150 145200 146811 264110 268711C 268711B 263232 W0CZZA - 59 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 60 249951 346810 35211B 135516 TYPE B 268711C 352150 145200 146811 264110 268711B Part For 268711D Plasma Model 263230 W0CZZA - 60 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 61 249951 346810 35211B 135516 TYPE B 268711C 352150 145200 146811 264110 268711B Part For 268711D Plasma Model 263230 W0CZZA - 61 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 62 249951 346810 35211B 135516 TYPE B 268711C 352150 145200 146811 264110 268711B Part For 268711D Plasma Model 263230 W0CZZA - 62 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 63 346810 35211B 135516 TYPE B 268711C 352150 145200 146811 264110 268711B 266090 Part For 268711D Plasma Model 263230 W0CZZA - 63 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 64 549610 649950 W0CZZB 435512 435511 268711F 559010 W6631 546810 447910 435301 554160 552560 552203A 550140 430411 552203B 437211 349480 - 64 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 65 549610 649950 W0CZZB 435512 435511 268711F 559010 W6631 546810 447910 435301 554160 552560 552203A 550140 430411 552203B 437211 349480 - 65 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 66 552102 552111 549610 649950 W0CZZB 435512 435511 268711F 559010 546810 447910 435301 554160 552203A 550140 430411 552203B 437211 349480 - 66 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 67 552102 552111 549610 649950 W0CZZB 435512 435511 559010 546810 447910 435301 554160 552560 552203A 550140 430411 552203B 437211 349480 - 67 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 68 549610 W0CZZB 435512 435511 559010 546810 552202 552116 561410 447910 435301 554160 552560 552203A 550140 430411 552203B 437211 349480 - 68 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 69 437212 552102 552111 549610 649950 W0CZZB 435512 435511 559010 546810 447910 435301 554160 552203A 550140 430411 552203B 437211 349480 - 69 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 70 APRIL, 2009 P/NO : 3828A20173B...

This manual is also suitable for:

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